UVA之难度排行：
| Title | Total Submissions | Solving % | Total Users | Solving % |
| 100 - The 3n + 1 problem | 536120 | 27.38% | 76353 | 72.62% |
| 10055 - Hashmat the Brave Warrior | 147050 | 27.33% | 31953 | 85.72% |
| 10071 - Back to High School Physics | 74075 | 50.05% | 27855 | 93.75% |
| 102 - Ecological Bin Packing | 75504 | 38.09% | 21297 | 86.15% |
| 458 - The Decoder | 51482 | 47.67% | 19204 | 92.57% |
| 272 - TEX Quotes | 47494 | 47.57% | 18536 | 91.56% |
| 10038 - Jolly Jumpers | 95150 | 26.29% | 18031 | 81.23% |
| 10189 - Minesweeper | 79513 | 22.72% | 17542 | 71.80% |
| 136 - Ugly Numbers | 58360 | 29.45% | 17253 | 75.59% |
| 494 - Kindergarten Counting Game | 48888 | 37.74% | 16634 | 88.36% |
| 10035 - Primary Arithmetic | 63898 | 28.80% | 15643 | 85.41% |
| 101 - The Blocks Problem | 73056 | 19.40% | 15276 | 63.69% |
| 10018 - Reverse and Add | 63154 | 41.11% | 15109 | 85.52% |
| 591 - Box of Bricks | 47054 | 31.54% | 14861 | 79.49% |
| 10300 - Ecological Premium | 25426 | 66.53% | 14756 | 96.64% |
| 113 - Power of Cryptography | 43063 | 38.02% | 14266 | 87.04% |
| 488 - Triangle Wave | 62186 | 20.75% | 13940 | 63.19% |
| 10082 - WERTYU | 39722 | 38.41% | 13876 | 88.23% |
| 299 - Train Swapping | 28477 | 55.48% | 13552 | 93.74% |
| 108 - Maximum Sum | 42257 | 39.37% | 13391 | 79.16% |
| 10783 - Odd Sum | 32137 | 46.83% | 12406 | 93.99% |
| 11172 - Relational Operator | 22814 | 59.72% | 11241 | 96.75% |
| 10370 - Above Average | 24726 | 52.43% | 11090 | 94.45% |
| 105 - The Skyline Problem | 44547 | 22.24% | 11027 | 61.96% |
| 10110 - Light, more light | 43444 | 31.58% | 10628 | 85.95% |
| 382 - Perfection | 30732 | 34.74% | 10400 | 81.83% |
| 483 - Word Scramble | 30429 | 43.04% | 10283 | 84.46% |
| 424 - Integer Inquiry | 26924 | 41.07% | 10238 | 86.04% |
| 10004 - Bicoloring | 37434 | 44.83% | 10182 | 87.61% |
| 10008 - What's Cryptanalysis? | 21957 | 56.48% | 10163 | 93.37% |
| 10041 - Vito's Family | 36626 | 38.95% | 10161 | 84.54% |
| 495 - Fibonacci Freeze | 47894 | 25.83% | 10137 | 67.38% |
| 579 - ClockHands | 28010 | 42.63% | 10052 | 91.27% |
| 10696 - f91 | 27548 | 52.78% | 10035 | 94.72% |
| 401 - Palindromes | 40171 | 24.93% | 9823 | 75.65% |
| 673 - Parentheses Balance | 47692 | 29.26% | 9770 | 82.31% |
| 575 - Skew Binary | 15754 | 68.97% | 9602 | 96.51% |
| 160 - Factors and Factorials | 30997 | 30.36% | 9423 | 79.99% |
| 369 - Combinations | 25836 | 43.38% | 9393 | 89.00% |
| 10340 - All in All | 38780 | 29.86% | 9320 | 88.44% |
| 706 - LCD Display | 42526 | 24.18% | 9177 | 68.48% |
| 10079 - Pizza Cutting | 24155 | 42.09% | 9164 | 92.31% |
| 374 - Big Mod | 25932 | 41.99% | 9142 | 89.24% |
| 10346 - Peter's Smokes | 23037 | 42.54% | 8896 | 91.52% |
| 103 - Stacking Boxes | 33927 | 22.65% | 8739 | 60.24% |
| 445 - Marvelous Mazes | 24820 | 41.04% | 8610 | 84.85% |
| 10137 - The Trip | 45124 | 18.77% | 8395 | 62.97% |
| 111 - History Grading | 20205 | 39.96% | 8371 | 71.60% |
| 543 - Goldbach's Conjecture | 28057 | 41.03% | 8347 | 87.54% |
| 10812 - Beat the Spread! | 23779 | 39.37% | 8320 | 92.42% |
| 10327 - Flip Sort | 24638 | 43.19% | 8307 | 90.27% |
| 694 - The Collatz Sequence | 24086 | 38.88% | 8307 | 87.01% |
| 713 - Adding Reversed Numbers | 22316 | 27.58% | 8202 | 59.00% |
| 151 - Power Crisis | 15972 | 58.36% | 8190 | 92.37% |
| 490 - Rotating Sentences | 30255 | 28.01% | 8180 | 78.04% |
| 10107 - What is the Median? | 21236 | 46.52% | 8149 | 90.11% |
| 406 - Prime Cuts | 31445 | 24.37% | 8104 | 67.28% |
| 10050 - Hartals | 16806 | 56.12% | 8051 | 92.75% |
| 623 - 500! | 33700 | 24.42% | 7983 | 64.31% |
| 10062 - Tell me the frequencies! | 39075 | 18.03% | 7928 | 60.12% |
| 499 - What's The Frequency, Kenneth? | 15242 | 57.40% | 7799 | 94.01% |
| 530 - Binomial Showdown | 31668 | 24.51% | 7762 | 79.59% |
| 541 - Error Correction | 15876 | 56.95% | 7755 | 92.19% |
| 10013 - Super long sums | 40677 | 26.09% | 7646 | 62.27% |
| 264 - Count on Cantor | 18293 | 48.03% | 7611 | 88.90% |
| 146 - ID Codes | 16827 | 51.68% | 7560 | 91.69% |
| 120 - Stacks of Flapjacks | 23303 | 40.44% | 7512 | 86.21% |
| 10405 - Longest Common Subsequence | 26862 | 35.88% | 7455 | 88.48% |
| 10106 - Product | 24854 | 37.44% | 7439 | 88.17% |
| 10127 - Ones | 17127 | 51.84% | 7342 | 90.17% |
| 147 - Dollars | 33863 | 22.40% | 7297 | 64.64% |
| 119 - Greedy Gift Givers | 23320 | 23.87% | 7264 | 64.95% |
| 116 - Unidirectional TSP | 37747 | 19.14% | 7231 | 62.69% |
| 107 - The Cat in the Hat | 41756 | 18.99% | 7108 | 64.29% |
| 674 - Coin Change | 21058 | 47.64% | 7028 | 90.38% |
| 10019 - Funny Encryption Method | 11334 | 68.63% | 7012 | 95.37% |
| 10469 - To Carry or not to Carry | 11566 | 71.52% | 6994 | 97.53% |
| 686 - Goldbach's Conjecture (II) | 17300 | 52.16% | 6978 | 92.95% |
| 138 - Street Numbers | 16436 | 42.22% | 6922 | 82.52% |
| 10222 - Decode the Mad man | 13628 | 51.27% | 6910 | 87.64% |
| 357 - Let Me Count The Ways | 24484 | 29.21% | 6907 | 70.80% |
| 492 - Pig-Latin | 33684 | 24.21% | 6904 | 75.87% |
| 583 - Prime Factors | 35819 | 28.05% | 6866 | 76.01% |
| 195 - Anagram | 30309 | 23.07% | 6838 | 63.91% |
| 371 - Ackermann Functions | 38610 | 23.03% | 6777 | 72.29% |
| 10302 - Summation of Polynomials | 17255 | 44.04% | 6732 | 90.54% |
| 10006 - Carmichael Numbers | 26022 | 36.68% | 6719 | 82.84% |
| 476 - Points in Figures: Rectangles | 22212 | 38.32% | 6585 | 90.90% |
| 256 - Quirksome Squares | 13597 | 54.92% | 6539 | 92.58% |
| 10003 - Cutting Sticks | 22163 | 42.57% | 6464 | 87.39% |
| 10929 - You can say 11 | 23221 | 33.39% | 6397 | 86.02% |
| 10970 - Big Chocolate | 12609 | 67.90% | 6372 | 97.49% |
| 10070 - Leap Year or Not Leap Year and ... | 30012 | 13.84% | 6364 | 48.32% |
| 10252 - Common Permutation | 27602 | 26.65% | 6319 | 78.48% |
| 572 - Oil Deposits | 12937 | 59.19% | 6304 | 95.61% |
| 294 - Divisors | 17120 | 44.11% | 6224 | 86.49% |
| 10010 - Where's Waldorf? | 22564 | 27.93% | 6138 | 76.03% |
| 10924 - Prime Words | 18324 | 39.13% | 6022 | 92.91% |
| 10034 - Freckles | 24816 | 28.60% | 5987 | 74.78% |
| 414 - Machined Surfaces | 15058 | 43.68% | 5982 | 92.13% |
| 568 - Just the Facts | 12872 | 52.33% | 5968 | 88.22% |
| 439 - Knight Moves | 15720 | 56.54% | 5928 | 93.71% |
| 112 - Tree Summing | 28762 | 25.59% | 5916 | 76.03% |
| 612 - DNA Sorting | 27583 | 20.51% | 5886 | 59.14% |
| 350 - Pseudo-Random Numbers | 12155 | 53.43% | 5862 | 89.07% |
| 344 - Roman Digititis | 10595 | 59.83% | 5817 | 92.20% |
| 10000 - Longest Paths | 24328 | 20.88% | 5755 | 58.73% |
| 408 - Uniform Generator | 14164 | 32.51% | 5743 | 65.00% |
| 441 - Lotto | 13460 | 38.81% | 5721 | 70.69% |
| 438 - The Circumference of the Circle | 9684 | 65.64% | 5720 | 94.04% |
| 10323 - Factorial! You Must be Kidding!!! | 24131 | 24.59% | 5704 | 76.58% |
| 412 - Pi | 18086 | 37.53% | 5695 | 81.28% |
| 10921 - Find the Telephone | 9923 | 63.04% | 5679 | 96.25% |
| 10424 - Love Calculator | 17445 | 34.03% | 5679 | 87.04% |
| 484 - The Department of Redundancy Department | 16285 | 41.17% | 5653 | 88.89% |
| 324 - Factorial Frequencies | 12294 | 55.24% | 5647 | 88.70% |
| 489 - Hangman Judge | 17471 | 26.22% | 5633 | 59.63% |
| 10420 - List of Conquests | 11903 | 54.31% | 5604 | 94.31% |
| 10260 - Soundex | 11930 | 51.25% | 5585 | 92.28% |
| 106 - Fermat vs. Pythagoras | 24862 | 31.75% | 5498 | 62.90% |
| 10131 - Is Bigger Smarter? | 18685 | 37.91% | 5496 | 85.17% |
| 10235 - Simply Emirp | 20959 | 29.97% | 5395 | 87.40% |
| 10161 - Ant on a Chessboard | 10978 | 57.73% | 5376 | 94.16% |
| 10098 - Generating Fast | 16319 | 40.60% | 5355 | 81.38% |
| 305 - Joseph | 13301 | 47.49% | 5334 | 88.02% |
| 118 - Mutant Flatworld Explorers | 13998 | 37.31% | 5277 | 84.39% |
| 477 - Points in Figures: Rectangles and Circles | 10958 | 58.39% | 5223 | 94.45% |
| 11332 - Summing Digits | 9959 | 60.96% | 5208 | 96.29% |
| 10066 - The Twin Towers | 13407 | 45.57% | 5153 | 87.62% |
| 444 - Encoder and Decoder | 17064 | 29.66% | 5100 | 77.88% |
| 104 - Arbitrage | 25205 | 21.58% | 5035 | 64.07% |
| 11547 - Automatic Answer | 8499 | 68.44% | 5000 | 97.32% |
| 573 - The Snail | 11666 | 44.62% | 4990 | 90.20% |
| 231 - Testing the CATCHER | 17836 | 20.51% | 4950 | 56.67% |
| 10200 - Prime Time | 23176 | 12.68% | 4950 | 35.29% |
| 11462 - Age Sort | 19333 | 36.64% | 4936 | 88.41% |
| 392 - Polynomial Showdown | 16412 | 29.48% | 4924 | 75.24% |
| 562 - Dividing coins | 20993 | 30.67% | 4854 | 82.18% |
| 10220 - I Love Big Numbers ! | 8828 | 62.83% | 4850 | 93.84% |
| 167 - The Sultan's Successors | 11070 | 47.90% | 4848 | 88.33% |
| 200 - Rare Order | 17107 | 29.43% | 4835 | 74.91% |
| 913 - Joana and the Odd Numbers | 13453 | 42.67% | 4831 | 91.78% |
| 446 - Kibbles "n" Bits "n" Bits "n" Bits | 10027 | 51.32% | 4801 | 92.63% |
| 10324 - Zeros and Ones | 21076 | 28.08% | 4767 | 79.78% |
| 640 - Self Numbers | 12418 | 49.40% | 4758 | 88.73% |
| 834 - Continued Fractions | 9481 | 61.84% | 4749 | 94.48% |
| 156 - Ananagrams | 10710 | 51.30% | 4681 | 91.18% |
| 11185 - Ternary | 12070 | 43.58% | 4661 | 94.49% |
| 386 - Perfect Cubes | 10702 | 48.75% | 4657 | 87.74% |
| 443 - Humble Numbers | 13249 | 41.26% | 4644 | 87.27% |
| 10192 - Vacation | 15282 | 36.46% | 4636 | 88.76% |
| 846 - Steps | 12278 | 45.75% | 4625 | 88.30% |
| 190 - Circle Through Three Points | 12935 | 32.25% | 4618 | 76.09% |
| 10195 - The Knights Of The Round Table | 15411 | 31.50% | 4614 | 84.53% |
| 10099 - The Tourist Guide | 20538 | 28.31% | 4603 | 80.86% |
| 900 - Brick Wall Patterns | 8719 | 61.80% | 4599 | 94.22% |
| 10305 - Ordering Tasks | 12439 | 47.54% | 4598 | 92.34% |
| 10931 - Parity | 8455 | 65.27% | 4576 | 96.44% |
| 10499 - The Land of Justice | 13664 | 40.78% | 4551 | 91.19% |
| 10432 - Polygon Inside A Circle | 13391 | 39.77% | 4545 | 91.07% |
| 440 - Eeny Meeny Moo | 7895 | 67.82% | 4543 | 94.61% |
| 847 - A Multiplication Game | 10098 | 49.50% | 4493 | 87.60% |
| 10473 - Simple Base Conversion | 11756 | 46.14% | 4413 | 89.51% |
| 10591 - Happy Number | 11071 | 47.50% | 4359 | 89.54% |
| 291 - The House Of Santa Claus | 7964 | 62.31% | 4345 | 94.50% |
| 621 - Secret Research | 10658 | 43.90% | 4345 | 86.35% |
| 10033 - Interpreter | 28055 | 21.71% | 4335 | 71.93% |
| 11000 - Bee | 12017 | 41.13% | 4305 | 91.75% |
| 10026 - Shoemaker's Problem | 17252 | 29.54% | 4302 | 76.36% |
| 10104 - Euclid Problem | 12548 | 39.74% | 4286 | 81.57% |
| 11150 - Cola | 9738 | 51.06% | 4241 | 93.04% |
| 10550 - Combination Lock | 9137 | 56.25% | 4224 | 94.27% |
| 514 - Rails | 13475 | 37.19% | 4220 | 78.67% |
| 352 - The Seasonal War | 8384 | 58.03% | 4219 | 92.79% |
| 389 - Basically Speaking | 13618 | 29.17% | 4215 | 71.98% |
| 11461 - Square Numbers | 9152 | 51.53% | 4092 | 94.65% |
| 10699 - Count the factors | 8476 | 61.66% | 4070 | 95.26% |
| 11044 - Searching for Nessy | 6025 | 75.44% | 4057 | 97.98% |
| 133 - The Dole Queue | 9418 | 43.81% | 4054 | 85.03% |
| 191 - Intersection | 17696 | 20.50% | 4044 | 66.17% |
| 524 - Prime Ring Problem | 15850 | 28.47% | 4033 | 65.78% |
| 459 - Graph Connectivity | 16223 | 22.96% | 4003 | 68.92% |
| 122 - Trees on the level | 18511 | 21.09% | 3980 | 66.91% |
| 455 - Periodic Strings | 13764 | 19.87% | 3980 | 55.20% |
| 10023 - Square root | 20814 | 7.66% | 3977 | 21.70% |
| 10474 - Where is the Marble? | 14745 | 38.50% | 3975 | 88.83% |
| 336 - A Node Too Far | 18326 | 26.59% | 3953 | 80.17% |
| 10183 - How Many Fibs? | 15125 | 28.70% | 3949 | 79.41% |
| 10579 - Fibonacci Numbers | 8129 | 59.37% | 3934 | 92.55% |
| 465 - Overflow | 18855 | 21.49% | 3928 | 76.25% |
| 10608 - Friends | 13832 | 45.73% | 3919 | 91.58% |
| 10196 - Check The Check | 17910 | 25.90% | 3897 | 77.24% |
| 11479 - Is this the easiest problem? | 15972 | 26.21% | 3877 | 88.91% |
| 10954 - Add All | 12748 | 35.31% | 3876 | 79.67% |
| 10310 - Dog and Gopher | 15667 | 27.47% | 3866 | 82.31% |
| 10139 - Factovisors | 21534 | 18.17% | 3866 | 53.70% |
| 10267 - Graphical Editor | 28204 | 14.42% | 3865 | 63.57% |
| 10209 - Is This Integration ? | 10215 | 52.90% | 3861 | 93.24% |
| 482 - Permutation Arrays | 18093 | 21.25% | 3823 | 69.50% |
| 10530 - Guessing Game | 12248 | 37.12% | 3812 | 90.32% |
| 10815 - Andy's First Dictionary | 15600 | 29.94% | 3790 | 86.49% |
| 10361 - Automatic Poetry | 8098 | 49.22% | 3764 | 91.29% |
| 10130 - SuperSale | 10877 | 49.16% | 3756 | 92.39% |
| 624 - CD | 11393 | 44.19% | 3751 | 87.98% |
| 417 - Word Index | 6835 | 66.07% | 3746 | 94.63% |
| 532 - Dungeon Master | 12905 | 36.02% | 3727 | 87.76% |
| 10258 - Contest Scoreboard | 22969 | 22.87% | 3703 | 75.56% |
| 10282 - Babelfish | 15390 | 38.89% | 3661 | 87.13% |
| 400 - Unix ls | 16060 | 36.81% | 3656 | 83.04% |
| 497 - Strategic Defense Initiative | 17496 | 20.08% | 3645 | 66.17% |
| 11636 - Hello World! | 9467 | 49.14% | 3638 | 94.34% |
| 11636 - Hello World! | 9467 | 49.14% | 3638 | 94.34% |
| 10450 - World Cup Noise | 9523 | 40.97% | 3635 | 87.21% |
| 537 - Artificial Intelligence? | 10225 | 36.42% | 3626 | 84.94% |
| 10168 - Summation of Four Primes | 27648 | 44.26% | 3613 | 84.36% |
| 10789 - Prime Frequency | 9135 | 48.34% | 3593 | 92.43% |
| 11417 - GCD | 6369 | 70.33% | 3590 | 96.71% |
| 10338 - Mischievous Children | 9885 | 42.08% | 3571 | 87.85% |
| 729 - The Hamming Distance Problem | 12405 | 38.27% | 3565 | 72.85% |
| 10142 - Australian Voting | 33137 | 20.15% | 3556 | 61.05% |
| 128 - Software CRC | 17445 | 41.49% | 3551 | 88.09% |
| 10394 - Twin Primes | 14345 | 36.26% | 3490 | 82.81% |
| 567 - Risk | 9499 | 43.08% | 3474 | 81.55% |
| 10515 - Powers Et Al. | 15258 | 30.34% | 3469 | 76.68% |
| 11530 - SMS Typing | 8308 | 47.46% | 3443 | 94.71% |
| 750 - 8 Queens Chess Problem | 14942 | 18.58% | 3443 | 56.72% |
| 478 - Points in Figures: Rectangles, Circles, Triangles | 9393 | 43.13% | 3432 | 89.42% |
| 531 - Compromise | 12790 | 26.79% | 3406 | 71.70% |
| 10922 - 2 the 9s | 8260 | 52.08% | 3404 | 92.51% |
| 10334 - Ray Through Glasses | 7036 | 53.79% | 3397 | 89.34% |
| 496 - Simply Subsets | 8052 | 49.13% | 3383 | 88.32% |
| 11854 - Egypt | 8055 | 46.95% | 3357 | 95.47% |
| 536 - Tree Recovery | 6727 | 60.70% | 3355 | 94.04% |
| 10193 - All You Need Is Love | 6775 | 52.71% | 3348 | 92.08% |
| 10533 - Digit Primes | 14848 | 31.65% | 3340 | 79.28% |
| 10878 - Decode the tape | 8287 | 47.32% | 3333 | 92.80% |
| 10152 - ShellSort | 22190 | 35.15% | 3319 | 83.64% |
| 10048 - Audiophobia | 9245 | 40.24% | 3307 | 79.74% |
| 485 - Pascal's Triangle of Death | 10772 | 28.05% | 3294 | 60.69% |
| 409 - Excuses, Excuses! | 10205 | 31.98% | 3292 | 80.92% |
| 10945 - Mother bear | 7312 | 52.65% | 3284 | 94.09% |
| 534 - Frogger | 10201 | 37.28% | 3271 | 82.21% |
| 10101 - Bangla Numbers | 14430 | 13.28% | 3264 | 44.03% |
| 10409 - Die Game | 6320 | 60.38% | 3250 | 95.48% |
| 348 - Optimal Array Multiplication Sequence | 10877 | 39.85% | 3231 | 86.20% |
| 576 - Haiku Review | 5874 | 58.07% | 3224 | 92.90% |
| 340 - Master-Mind Hints | 6840 | 50.89% | 3211 | 87.89% |
| 355 - The Bases Are Loaded | 12501 | 24.27% | 3210 | 76.11% |
| 10042 - Smith Numbers | 12498 | 32.36% | 3206 | 81.16% |
| 130 - Roman Roulette | 7667 | 41.70% | 3203 | 82.49% |
| 10191 - Longest Nap | 11847 | 27.74% | 3189 | 78.93% |
| 10245 - The Closest Pair Problem | 29774 | 21.01% | 3189 | 63.50% |
| 755 - 487--3279 | 20579 | 17.76% | 3188 | 59.19% |
| 315 - Network | 12281 | 38.12% | 3182 | 84.63% |
| 123 - Searching Quickly | 9778 | 31.77% | 3177 | 71.99% |
| 10067 - Playing with Wheels | 11178 | 38.73% | 3138 | 88.27% |
| 10190 - Divide, But Not Quite Conquer! | 13997 | 19.82% | 3129 | 72.58% |
| 498 - Polly the Polynomial | 9338 | 38.08% | 3120 | 73.46% |
| 11192 - Group Reverse | 6147 | 56.55% | 3118 | 95.67% |
| 11805 - Bafana Bafana | 6528 | 54.20% | 3094 | 95.64% |
| 343 - What Base Is This? | 11446 | 28.60% | 3076 | 78.25% |
| 10905 - Children's Game | 13027 | 25.73% | 3072 | 70.28% |
| 481 - What Goes Up | 16054 | 23.39% | 3038 | 70.93% |
| 117 - The Postal Worker Rings Once | 6894 | 48.17% | 3018 | 89.56% |
| 10032 - Tug of War | 26279 | 9.53% | 3015 | 26.00% |
| 10198 - Counting | 9025 | 41.88% | 3013 | 82.24% |
| 558 - Wormholes | 8995 | 45.46% | 3002 | 90.67% |
| 378 - Intersecting Lines | 8505 | 36.12% | 2985 | 79.90% |
| 124 - Following Orders | 7820 | 32.77% | 2979 | 69.92% |
| 661 - Blowing Fuses | 8503 | 35.41% | 2971 | 85.86% |
| 507 - Jill Rides Again | 11843 | 32.44% | 2968 | 83.19% |
| 615 - Is It A Tree? | 15316 | 18.16% | 2962 | 62.53% |
| 10784 - Diagonal | 8034 | 40.64% | 2958 | 91.41% |
| 10025 - The ? 1 ? 2 ? ... ? n = k problem | 10554 | 23.85% | 2945 | 69.88% |
| 11059 - Maximum Product | 13072 | 21.81% | 2918 | 77.52% |
| 701 - The Archeologists' Dilemma | 18684 | 30.05% | 2916 | 60.77% |
| 202 - Repeating Decimals | 11121 | 25.39% | 2910 | 63.06% |
| 10194 - Football (aka Soccer) | 16676 | 19.49% | 2904 | 71.69% |
| 10611 - The Playboy Chimp | 10172 | 37.45% | 2897 | 84.43% |
| 193 - Graph Coloring | 12148 | 23.62% | 2894 | 60.64% |
| 10037 - Bridge | 14772 | 20.32% | 2889 | 58.95% |
| 155 - All Squares | 6426 | 48.63% | 2883 | 85.02% |
| 10684 - The jackpot | 8351 | 47.87% | 2861 | 93.32% |
| 793 - Network Connections | 16942 | 25.59% | 2860 | 76.54% |
| 10105 - Polynomial Coefficients | 6665 | 60.69% | 2853 | 91.62% |
| 10679 - I Love Strings!! | 15876 | 26.51% | 2847 | 55.46% |
| 725 - Division | 8541 | 28.57% | 2844 | 66.00% |
| 333 - Recognizing Good ISBNs | 15810 | 13.93% | 2840 | 47.01% |
| 594 - One Little, Two Little, Three Little Endians | 6226 | 61.37% | 2831 | 94.52% |
| 442 - Matrix Chain Multiplication | 5662 | 60.56% | 2828 | 93.35% |
| 10465 - Homer Simpson | 10538 | 35.53% | 2810 | 82.63% |
| 10205 - Stack 'em Up | 10435 | 28.74% | 2809 | 76.54% |
| 10523 - Very Easy !!! | 10293 | 26.20% | 2794 | 61.78% |
| 271 - Simply Syntax | 8172 | 40.47% | 2792 | 82.06% |
| 10014 - Simple calculations | 8009 | 29.33% | 2792 | 66.51% |
| 10341 - Solve It | 17804 | 27.37% | 2789 | 85.26% |
| 356 - Square Pegs And Round Holes | 7846 | 26.91% | 2789 | 59.34% |
| 544 - Heavy Cargo | 6616 | 49.17% | 2788 | 89.42% |
| 10336 - Rank the Languages | 5394 | 58.95% | 2778 | 94.96% |
| 10935 - Throwing cards away I | 8644 | 35.70% | 2773 | 88.68% |
| 10494 - If We Were a Child Again | 9299 | 29.42% | 2765 | 78.92% |
| 727 - Equation | 12779 | 24.75% | 2732 | 68.48% |
| 10347 - Medians | 9755 | 30.67% | 2724 | 85.43% |
| 216 - Getting in Line | 8088 | 38.12% | 2724 | 74.52% |
| 820 - Internet Bandwidth | 14497 | 32.35% | 2713 | 85.48% |
| 784 - Maze Exploration | 8807 | 42.06% | 2712 | 85.51% |
| 10015 - Joseph's Cousin | 6583 | 23.67% | 2707 | 43.41% |
| 10295 - Hay Points | 5112 | 59.06% | 2704 | 95.16% |
| 121 - Pipe Fitters | 6697 | 40.79% | 2694 | 86.60% |
| 10077 - The Stern-Brocot Number System | 6473 | 52.34% | 2693 | 92.13% |
| 110 - Meta-Loopless Sorts | 9642 | 26.60% | 2684 | 58.12% |
| 748 - Exponentiation | 5208 | 55.82% | 2683 | 91.76% |
| 11498 - Division of Nlogonia | 4087 | 75.36% | 2678 | 98.21% |
| 10074 - Take the Land | 7978 | 49.06% | 2671 | 90.64% |
| 10298 - Power Strings | 9373 | 34.76% | 2660 | 76.39% |
| 300 - Maya Calendar | 7520 | 34.56% | 2650 | 81.47% |
| 10229 - Modular Fibonacci | 8140 | 33.65% | 2639 | 76.51% |
| 109 - SCUD Busters | 10507 | 26.94% | 2626 | 62.49% |
| 278 - Chess | 5117 | 56.52% | 2614 | 93.23% |
| 10170 - The Hotel with Infinite Rooms | 5950 | 53.88% | 2604 | 89.82% |
| 10583 - Ubiquitous Religions | 9555 | 40.84% | 2603 | 89.86% |
| 10009 - All Roads Lead Where? | 9439 | 29.39% | 2601 | 74.55% |
| 402 - M*A*S*H | 10237 | 17.44% | 2590 | 43.17% |
| 10188 - Automated Judge Script | 12667 | 24.20% | 2584 | 80.61% |
| 10656 - Maximum Sum (II) | 8453 | 31.48% | 2580 | 79.11% |
| 739 - Soundex Indexing | 7539 | 33.93% | 2578 | 73.86% |
| 516 - Prime Land | 6561 | 38.18% | 2563 | 77.88% |
| 10226 - Hardwood Species | 12673 | 26.58% | 2563 | 71.79% |
| 11219 - How old are you? | 8320 | 31.66% | 2561 | 84.11% |
| 11984 - A Change in Thermal Unit | 7453 | 50.17% | 2557 | 95.78% |
| 850 - Crypt Kicker II | 14159 | 18.80% | 2555 | 66.14% |
| 11875 - Brick Game | 4324 | 67.09% | 2538 | 97.01% |
| 10221 - Satellites | 8651 | 30.53% | 2536 | 85.49% |
| 11057 - Exact Sum | 9199 | 34.32% | 2531 | 88.34% |
| 574 - Sum It Up | 6622 | 40.32% | 2530 | 84.23% |
| 263 - Number Chains | 9120 | 35.16% | 2521 | 75.72% |
| 253 - Cube painting | 7017 | 37.34% | 2517 | 82.96% |
| 11689 - Soda Surpler | 4392 | 65.32% | 2504 | 97.00% |
| 11689 - Soda Surpler | 4392 | 65.32% | 2504 | 97.00% |
| 10219 - Find the ways ! | 6333 | 41.40% | 2501 | 88.16% |
| 10810 - Ultra-QuickSort | 10371 | 35.67% | 2494 | 74.34% |
| 10700 - Camel trading | 7254 | 39.74% | 2491 | 88.32% |
| 469 - Wetlands of Florida | 9397 | 24.06% | 2491 | 67.56% |
| 154 - Recycling | 4987 | 52.06% | 2485 | 89.09% |
| 642 - Word Amalgamation | 5494 | 52.44% | 2483 | 90.94% |
| 644 - Immediate Decodability | 6521 | 47.34% | 2480 | 90.00% |
| 10093 - An Easy Problem! | 10852 | 18.70% | 2467 | 61.21% |
| 836 - Largest Submatrix | 7779 | 30.88% | 2465 | 76.84% |
| 457 - Linear Cellular Automata | 7256 | 33.48% | 2459 | 80.89% |
| 10020 - Minimal coverage | 12273 | 27.02% | 2454 | 75.55% |
| 127 - "Accordian" Patience | 9325 | 33.36% | 2454 | 74.69% |
| 10100 - Longest Match | 12541 | 17.70% | 2447 | 65.96% |
| 10154 - Weights and Measures | 14633 | 19.63% | 2431 | 52.86% |
| 10125 - Sumsets | 16479 | 20.94% | 2427 | 73.01% |
| 10286 - Trouble with a Pentagon | 5054 | 62.11% | 2419 | 93.39% |
| 10285 - Longest Run on a Snowboard | 5820 | 55.79% | 2406 | 94.06% |
| 11340 - Newspaper | 11589 | 26.46% | 2400 | 83.71% |
| 280 - Vertex | 8477 | 33.73% | 2396 | 82.39% |
| 10069 - Distinct Subsequences | 11306 | 26.48% | 2394 | 71.35% |
| 11942 - Lumberjack Sequencing | 4994 | 54.08% | 2384 | 95.72% |
| 10487 - Closest Sums | 7593 | 39.19% | 2374 | 89.68% |
| 144 - Student Grants | 5081 | 43.75% | 2373 | 83.31% |
| 10007 - Count the Trees | 6127 | 38.80% | 2364 | 70.43% |
| 10054 - The Necklace | 14753 | 17.43% | 2360 | 57.03% |
| 10633 - Rare Easy Problem | 6486 | 38.17% | 2349 | 85.91% |
| 10276 - Hanoi Tower Troubles Again! | 3929 | 72.87% | 2345 | 96.25% |
| 10299 - Relatives | 10671 | 29.95% | 2339 | 75.84% |
| 10049 - Self-describing Sequence | 5493 | 51.39% | 2332 | 88.16% |
| 11541 - Decoding | 4503 | 58.23% | 2326 | 95.31% |
| 639 - Don't Get Rooked | 4686 | 60.20% | 2318 | 91.11% |
| 11677 - Alarm Clock | 4800 | 54.75% | 2317 | 93.48% |
| 11677 - Alarm Clock | 4800 | 54.75% | 2317 | 93.48% |
| 474 - Heads / Tails Probability | 7575 | 37.32% | 2314 | 82.45% |
| 227 - Puzzle | 9526 | 19.69% | 2313 | 51.75% |
| 587 - There's treasure everywhere! | 7938 | 27.74% | 2302 | 77.85% |
| 10179 - Irreducable Basic Fractions | 6659 | 45.14% | 2289 | 87.29% |
| 11455 - Behold my quadrangle | 6487 | 38.26% | 2286 | 92.21% |
| 637 - Booklet Printing | 5422 | 42.60% | 2284 | 80.87% |
| 11877 - The Coco-Cola Store | 4029 | 66.77% | 2269 | 96.30% |
| 10315 - Poker Hands | 10341 | 22.83% | 2268 | 74.51% |
| 10182 - Bee Maja | 5004 | 56.89% | 2262 | 90.89% |
| 125 - Numbering Paths | 8213 | 25.02% | 2258 | 68.64% |
| 10344 - 23 out of 5 | 8463 | 32.27% | 2241 | 76.04% |
| 11388 - GCD LCM | 4472 | 60.24% | 2239 | 95.58% |
| 10116 - Robot Motion | 4768 | 50.71% | 2239 | 91.11% |
| 311 - Packets | 6712 | 32.85% | 2235 | 79.51% |
| 145 - Gondwanaland Telecom | 8365 | 22.73% | 2235 | 71.14% |
| 201 - Squares | 6828 | 31.55% | 2233 | 69.19% |
| 10397 - Connect the Campus | 10844 | 31.04% | 2226 | 86.34% |
| 423 - MPI Maelstrom | 4950 | 51.92% | 2207 | 91.84% |
| 555 - Bridge Hands | 5360 | 40.63% | 2199 | 76.13% |
| 486 - English-Number Translator | 5617 | 36.10% | 2197 | 74.69% |
| 10044 - Erdos Numbers | 21057 | 14.82% | 2175 | 59.26% |
| 10242 - Fourth Point !! | 5698 | 38.72% | 2173 | 85.27% |
| 164 - String Computer | 10435 | 28.95% | 2170 | 72.17% |
| 11559 - Event Planning | 5559 | 44.13% | 2165 | 92.89% |
| 153 - Permalex | 6348 | 28.86% | 2162 | 69.47% |
| 142 - Mouse Clicks | 6199 | 20.23% | 2160 | 40.46% |
| 861 - Little Bishops | 9797 | 31.92% | 2155 | 74.25% |
| 275 - Expanding Fractions | 6449 | 26.86% | 2149 | 64.45% |
| 993 - Product of digits | 4987 | 52.66% | 2144 | 94.68% |
| 152 - Tree's a Crowd | 6676 | 37.34% | 2126 | 83.54% |
| 10036 - Divisibility | 7601 | 34.86% | 2116 | 81.24% |
| 10790 - How Many Points of Intersection? | 4924 | 49.65% | 2102 | 94.58% |
| 10986 - Sending email | 10139 | 34.66% | 2098 | 83.32% |
| 10223 - How many nodes ? | 4213 | 52.46% | 2096 | 93.08% |
| 821 - Page Hopping | 5047 | 52.53% | 2094 | 92.79% |
| 740 - Baudot Data Communication Code | 3998 | 55.80% | 2091 | 89.29% |
| 297 - Quadtrees | 5740 | 41.85% | 2087 | 90.61% |
| 10311 - Goldbach and Euler | 16323 | 21.97% | 2083 | 63.80% |
| 10673 - Play with Floor and Ceil | 5373 | 44.71% | 2075 | 87.08% |
| 10281 - Average Speed | 4736 | 44.28% | 2067 | 87.13% |
| 10622 - Perfect P-th Powers | 10454 | 22.80% | 2064 | 75.97% |
| 260 - Il Gioco dell'X | 6029 | 42.98% | 2063 | 89.53% |
| 383 - Shipping Routes | 5164 | 37.74% | 2061 | 73.90% |
| 10701 - Pre, in and post | 5019 | 55.53% | 2055 | 93.48% |
| 10080 - Gopher II | 9762 | 38.42% | 2053 | 83.97% |
| 10948 - The primary problem | 5518 | 43.58% | 2052 | 89.72% |
| 10115 - Automatic Editing | 5099 | 43.81% | 2050 | 90.15% |
| 437 - The Tower of Babylon | 4441 | 52.69% | 2045 | 90.37% |
| 140 - Bandwidth | 5793 | 44.54% | 2044 | 88.75% |
| 10297 - Beavergnaw | 3285 | 67.49% | 2043 | 95.35% |
| 10215 - The Largest/Smallest Box ... | 9850 | 11.16% | 2042 | 34.57% |
| 10056 - What is the Probability ? | 5857 | 37.97% | 2039 | 85.63% |
| 10714 - Ants | 5447 | 53.09% | 2034 | 91.54% |
| 12015 - Google is Feeling Lucky | 3591 | 70.01% | 2032 | 98.13% |
| 539 - The Settlers of Catan | 4336 | 55.33% | 2032 | 93.65% |
| 114 - Simulation Wizardry | 7081 | 30.41% | 2025 | 73.23% |
| 10407 - Simple division | 5664 | 29.64% | 2021 | 64.47% |
| 143 - Orchard Trees | 15452 | 10.11% | 2020 | 35.79% |
| 10664 - Luggage | 4430 | 54.36% | 2013 | 93.69% |
| 10102 - The path in the colored field | 7021 | 35.32% | 2007 | 87.44% |
| 10940 - Throwing cards away II | 5881 | 51.98% | 2002 | 87.16% |
| 11137 - Ingenuous Cubrency | 3612 | 69.96% | 1989 | 97.34% |
| 10491 - Cows and Cars | 4052 | 61.45% | 1988 | 94.82% |
| 10199 - Tourist Guide | 8963 | 25.49% | 1988 | 75.35% |
| 681 - Convex Hull Finding | 12246 | 21.44% | 1974 | 70.67% |
| 353 - Pesky Palindromes | 5307 | 44.75% | 1970 | 88.07% |
| 10404 - Bachet's Game | 5444 | 54.96% | 1968 | 93.19% |
| 10903 - Rock-Paper-Scissors Tournament | 7419 | 31.96% | 1967 | 81.85% |
| 10703 - Free spots | 4098 | 56.88% | 1963 | 94.91% |
| 10678 - The Grazing Cow | 3345 | 68.58% | 1959 | 97.29% |
| 762 - We Ship Cheap | 9567 | 24.21% | 1958 | 75.84% |
| 825 - Walking on the Safe Side | 8337 | 26.24% | 1954 | 79.38% |
| 696 - How Many Knights | 6320 | 38.02% | 1953 | 84.54% |
| 166 - Making Change | 6976 | 35.34% | 1953 | 83.56% |
| 10279 - Mine Sweeper | 6042 | 25.19% | 1953 | 68.46% |
| 429 - Word Transformation | 8018 | 21.36% | 1936 | 62.04% |
| 161 - Traffic Lights | 6028 | 35.43% | 1934 | 85.16% |
| 10129 - Play on Words | 9556 | 24.92% | 1932 | 69.67% |
| 10763 - Foreign Exchange | 6797 | 43.71% | 1931 | 86.64% |
| 10140 - Prime Distance | 9331 | 26.01% | 1931 | 71.78% |
| 10162 - Last Digit | 4730 | 39.47% | 1926 | 79.34% |
| 843 - Crypt Kicker | 12441 | 22.96% | 1915 | 64.54% |
| 460 - Overlapping Rectangles | 5698 | 24.45% | 1910 | 60.89% |
| 10213 - How Many Pieces of Land ? | 7061 | 28.82% | 1905 | 63.62% |
| 11152 - Colourful Flowers | 5746 | 44.24% | 1904 | 91.49% |
| 10539 - Almost Prime Numbers | 7938 | 32.82% | 1904 | 82.41% |
| 170 - Clock Patience | 4845 | 40.95% | 1900 | 89.26% |
| 10573 - Geometry Paradox | 4436 | 46.78% | 1895 | 90.24% |
| 714 - Copying Books | 11259 | 20.29% | 1894 | 67.37% |
| 884 - Factorial Factors | 8410 | 42.52% | 1883 | 81.52% |
| 332 - Rational Numbers from Repeating Fractions | 8813 | 23.07% | 1879 | 67.80% |
| 10879 - Code Refactoring | 4001 | 58.46% | 1871 | 95.62% |
| 10363 - Tic Tac Toe | 6269 | 27.68% | 1866 | 78.19% |
| 10002 - Center of Masses | 8971 | 25.01% | 1866 | 65.01% |
| 636 - Squares (III) | 3698 | 54.68% | 1865 | 92.92% |
| 422 - Word-Search Wonder | 3945 | 50.47% | 1862 | 89.15% |
| 10141 - Request for Proposal | 7157 | 25.88% | 1850 | 76.32% |
| 540 - Team Queue | 9086 | 28.12% | 1839 | 78.63% |
| 10303 - How Many Trees? | 4858 | 37.34% | 1836 | 75.05% |
| 11494 - Queen | 4378 | 51.71% | 1832 | 95.52% |
| 679 - Dropping Balls | 5440 | 47.83% | 1828 | 85.12% |
| 11364 - Parking | 2662 | 80.09% | 1826 | 98.74% |
| 10176 - Ocean Deep ! - Make it shallow !! | 5936 | 36.91% | 1819 | 83.73% |
| 11577 - Letter Frequency | 4427 | 52.63% | 1815 | 94.93% |
| 320 - Border | 4068 | 42.01% | 1815 | 78.95% |
| 902 - Password Search | 12178 | 19.55% | 1811 | 65.82% |
| 307 - Sticks | 13112 | 11.53% | 1808 | 27.88% |
| 11151 - Longest Palindrome | 7748 | 29.78% | 1807 | 84.84% |
| 10369 - Arctic Network | 7030 | 37.74% | 1801 | 88.23% |
| 270 - Lining Up | 12117 | 14.77% | 1799 | 53.64% |
| 10392 - Factoring Large Numbers | 4946 | 44.26% | 1798 | 86.04% |
| 10090 - Marbles | 9643 | 18.34% | 1793 | 58.51% |
| 12289 - One-Two-Three | 3870 | 58.68% | 1791 | 96.31% |
| 347 - Run | 4132 | 23.67% | 1782 | 42.59% |
| 699 - The Falling Leaves | 5479 | 36.72% | 1780 | 74.33% |
| 232 - Crossword Answers | 5319 | 30.85% | 1775 | 62.76% |
| 10773 - Back to Intermediate Math | 6223 | 30.84% | 1771 | 88.99% |
| 571 - Jugs | 5440 | 40.64% | 1771 | 84.87% |
| 10534 - Wavio Sequence | 7164 | 36.88% | 1767 | 80.87% |
| 115 - Climbing Trees | 6061 | 31.48% | 1766 | 79.39% |
| 10943 - How do you add? | 4510 | 50.11% | 1752 | 91.89% |
| 10451 - Ancient Village Sports | 3723 | 60.27% | 1740 | 95.23% |
| 10509 - R U Kidding Mr. Feynman? | 3779 | 58.43% | 1738 | 90.79% |
| 11428 - Cubes | 4746 | 42.58% | 1735 | 91.93% |
| 413 - Up and Down Sequences | 3425 | 46.01% | 1731 | 78.86% |
| 10490 - Mr. Azad and his Son!!!!! | 4206 | 41.96% | 1727 | 88.82% |
| 306 - Cipher | 8146 | 19.45% | 1717 | 58.24% |
| 10005 - Packing polygons | 7107 | 15.44% | 1717 | 45.84% |
| 11069 - A Graph Problem | 2949 | 71.96% | 1715 | 97.49% |
| 11369 - Shopaholic | 3670 | 55.40% | 1706 | 94.72% |
| 10078 - The Art Gallery | 4537 | 45.87% | 1706 | 89.62% |
| 10642 - Can You Solve It? | 3479 | 56.83% | 1702 | 91.07% |
| 208 - Firetruck | 7427 | 17.81% | 1700 | 57.00% |
| 10012 - How Big Is It? | 7074 | 27.35% | 1699 | 65.04% |
| 628 - Passwords | 3453 | 59.17% | 1697 | 87.27% |
| 608 - Counterfeit Dollar | 5076 | 33.45% | 1696 | 74.76% |
| 454 - Anagrams | 7913 | 13.88% | 1696 | 49.41% |
| 11121 - Base -2 | 3946 | 57.20% | 1694 | 93.86% |
| 141 - The Spot Game | 4639 | 42.62% | 1692 | 89.13% |
| 10427 - Naughty Sleepy Boys | 3569 | 51.16% | 1692 | 85.70% |
| 10132 - File Fragmentation | 6832 | 26.46% | 1692 | 72.40% |
| 657 - The die is cast | 6614 | 25.84% | 1682 | 74.32% |
| 10150 - Doublets | 12737 | 19.20% | 1679 | 60.93% |
| 11292 - Dragon of Loowater | 4668 | 46.68% | 1672 | 91.81% |
| 11608 - No Problem | 4851 | 39.33% | 1670 | 90.48% |
| 11608 - No Problem | 4851 | 39.33% | 1670 | 90.48% |
| 630 - Anagrams (II) | 5706 | 21.28% | 1662 | 59.03% |
| 10800 - Not That Kind of Graph | 6723 | 20.62% | 1657 | 71.64% |
| 10489 - Boxes of Chocolates | 4077 | 48.00% | 1654 | 92.20% |
| 10212 - The Last Non-zero Digit. | 7403 | 18.18% | 1653 | 47.73% |
| 10994 - Simple Addition | 5723 | 28.99% | 1651 | 64.20% |
| 10377 - Maze Traversal | 4555 | 36.09% | 1638 | 78.21% |
| 10946 - You want what filled? | 5132 | 40.10% | 1637 | 92.79% |
| 11063 - B2-Sequence | 7462 | 23.97% | 1634 | 82.44% |
| 10147 - Highways | 9390 | 23.05% | 1632 | 75.25% |
| 10400 - Game Show Math | 7381 | 29.30% | 1631 | 78.79% |
| 12372 - Packing for Holiday | 3174 | 63.55% | 1627 | 97.60% |
| 11233 - Deli Deli | 3010 | 61.13% | 1625 | 97.42% |
| 895 - Word Problem | 3514 | 55.92% | 1623 | 92.61% |
| 580 - Critical Mass | 3556 | 53.97% | 1606 | 90.22% |
| 325 - Identifying Legal Pascal Real Constants | 4984 | 31.34% | 1604 | 78.12% |
| 10452 - Marcus | 3401 | 48.04% | 1601 | 84.20% |
| 10063 - Knuth's Permutation | 4288 | 39.69% | 1601 | 66.08% |
| 880 - Cantor Fractions | 7063 | 30.07% | 1593 | 79.22% |
| 10852 - Less Prime | 2803 | 68.43% | 1591 | 96.04% |
| 602 - What Day Is It? | 9177 | 25.85% | 1590 | 63.96% |
| 450 - Little Black Book | 8731 | 30.03% | 1585 | 80.19% |
| 10364 - Square | 7870 | 23.16% | 1585 | 59.31% |
| 12250 - Language Detection | 3383 | 53.27% | 1576 | 96.07% |
| 10706 - Number Sequence | 4420 | 34.64% | 1576 | 73.41% |
| 10029 - Edit Step Ladders | 10671 | 17.13% | 1575 | 52.70% |
| 11936 - The Lazy Lumberjacks | 2574 | 71.29% | 1568 | 98.09% |
| 10360 - Rat Attack | 6820 | 35.63% | 1564 | 82.67% |
| 11879 - Multiple of 17 | 2838 | 64.73% | 1561 | 93.91% |
| 11244 - Counting Stars | 2995 | 61.14% | 1553 | 94.91% |
| 10293 - Word Length and Frequency | 3700 | 38.05% | 1551 | 79.37% |
| 10600 - ACM Contest and Blackout | 5810 | 35.13% | 1549 | 88.83% |
| 384 - Slurpys | 3389 | 45.23% | 1543 | 82.63% |
| 785 - Grid Colouring | 5868 | 32.75% | 1542 | 77.63% |
| 711 - Dividing up | 8570 | 15.22% | 1542 | 50.13% |
| 796 - Critical Links | 7396 | 29.06% | 1539 | 79.79% |
| 712 - S-Trees | 3118 | 51.12% | 1538 | 86.02% |
| 159 - Word Crosses | 4493 | 23.04% | 1538 | 57.09% |
| 11526 - H(n) | 6140 | 36.58% | 1536 | 64.19% |
| 700 - Date Bugs | 4659 | 29.00% | 1518 | 75.43% |
| 10051 - Tower of Cubes | 5264 | 32.43% | 1513 | 80.77% |
| 11900 - Boiled Eggs | 3598 | 48.47% | 1511 | 93.71% |
| 326 - Extrapolation Using a Difference Table | 2707 | 61.47% | 1511 | 89.61% |
| 11650 - Mirror Clock | 4347 | 37.04% | 1511 | 86.57% |
| 11650 - Mirror Clock | 4347 | 37.04% | 1511 | 86.57% |
| 11631 - Dark roads | 5536 | 40.08% | 1510 | 90.07% |
| 11631 - Dark roads | 5536 | 40.08% | 1510 | 90.07% |
| 10249 - The Grand Dinner | 6668 | 34.43% | 1507 | 80.36% |
| 10167 - Birthday Cake | 5286 | 33.35% | 1505 | 82.86% |
| 11614 - Etruscan Warriors Never Play Chess | 3550 | 50.03% | 1503 | 89.95% |
| 11614 - Etruscan Warriors Never Play Chess | 3550 | 50.03% | 1503 | 89.95% |
| 10365 - Blocks | 3239 | 55.54% | 1502 | 92.48% |
| 839 - Not so Mobile | 5759 | 29.08% | 1488 | 77.76% |
| 10589 - Area | 4858 | 41.97% | 1471 | 89.67% |
| 10408 - Farey sequences | 3207 | 57.62% | 1461 | 91.44% |
| 501 - Black Box | 8937 | 22.73% | 1458 | 51.51% |
| 10271 - Chopsticks | 6387 | 32.00% | 1456 | 77.27% |
| 10128 - Queue | 4571 | 48.74% | 1454 | 88.03% |
| 254 - Towers of Hanoi | 5884 | 18.37% | 1450 | 49.86% |
| 10301 - Rings and Glue | 6240 | 22.79% | 1444 | 77.63% |
| 10359 - Tiling | 3021 | 56.77% | 1437 | 95.82% |
| 394 - Mapmaker | 3077 | 56.74% | 1437 | 92.00% |
| 301 - Transportation | 4987 | 32.52% | 1434 | 76.29% |
| 10508 - Word Morphing | 5772 | 35.86% | 1433 | 84.37% |
| 10496 - Collecting Beepers | 3015 | 54.63% | 1430 | 90.70% |
| 10926 - How Many Dependencies? | 4998 | 33.81% | 1429 | 86.63% |
| 11503 - Virtual Friends | 5461 | 38.25% | 1415 | 85.58% |
| 10330 - Power Transmission | 7036 | 33.07% | 1414 | 86.78% |
| 616 - Coconuts, Revisited | 6346 | 22.93% | 1413 | 54.28% |
| 129 - Krypton Factor | 3532 | 35.90% | 1406 | 76.32% |
| 10057 - A mid-summer night's dream. | 5437 | 28.53% | 1404 | 68.73% |
| 10061 - How many zero's and how many digits ? | 5782 | 25.13% | 1401 | 72.95% |
| 10651 - Pebble Solitaire | 2664 | 67.76% | 1398 | 95.42% |
| 436 - Arbitrage (II) | 3990 | 42.93% | 1390 | 86.47% |
| 471 - Magic Numbers | 5504 | 24.75% | 1389 | 60.91% |
| 10739 - String to Palindrome | 2824 | 63.56% | 1386 | 95.09% |
| 126 - The Errant Physicist | 4033 | 29.70% | 1385 | 73.86% |
| 10925 - Krakovia | 3981 | 36.50% | 1383 | 84.16% |
| 218 - Moth Eradication | 7208 | 40.55% | 1371 | 81.25% |
| 12149 - Feynman | 2726 | 80.92% | 1370 | 99.05% |
| 11362 - Phone List | 5351 | 34.05% | 1369 | 81.96% |
| 341 - Non-Stop Travel | 3633 | 47.29% | 1367 | 89.10% |
| 526 - String Distance and Transform Process | 6291 | 23.62% | 1367 | 63.57% |
| 12403 - Save Setu | 2709 | 66.45% | 1363 | 96.11% |
| 10112 - Myacm Triangles | 2755 | 53.10% | 1361 | 92.58% |
| 11470 - Square Sums | 2616 | 57.61% | 1360 | 94.93% |
| 10017 - The Never Ending Towers of Hanoi | 4396 | 18.95% | 1360 | 43.90% |
| 620 - Cellular Structure | 2740 | 50.44% | 1359 | 85.72% |
| 10443 - Rock | 3396 | 46.88% | 1358 | 80.78% |
| 855 - Lunch in Grid City | 4736 | 36.44% | 1357 | 85.70% |
| 131 - The Psychic Poker Player | 2952 | 49.25% | 1355 | 88.86% |
| 10918 - Tri Tiling | 2579 | 61.65% | 1351 | 96.60% |
| 10081 - Tight Words | 2908 | 51.10% | 1351 | 89.34% |
| 10502 - Counting Rectangles | 2819 | 57.36% | 1347 | 92.28% |
| 10916 - Factstone Benchmark | 2558 | 62.20% | 1345 | 93.83% |
| 377 - Cowculations | 2320 | 56.98% | 1340 | 87.54% |
| 619 - Numerically Speaking | 3775 | 48.40% | 1336 | 84.51% |
| 10519 - !! Really Strange !! | 3864 | 34.60% | 1331 | 82.57% |
| 11223 - O: dah dah dah! | 4969 | 27.21% | 1320 | 82.35% |
| 11371 - Number Theory for Newbies | 4354 | 28.89% | 1316 | 81.08% |
| 10653 - Bombs! NO they are Mines!! | 4723 | 37.01% | 1315 | 88.75% |
| 11827 - Maximum GCD | 3344 | 48.74% | 1314 | 91.63% |
| 542 - France '98 | 2336 | 61.22% | 1314 | 89.35% |
| 10001 - Garden of Eden | 4177 | 32.70% | 1308 | 68.20% |
| 10177 - (2/3/4)-D Sqr/Rects/Cubes/Boxes? | 2686 | 53.61% | 1306 | 91.73% |
| 139 - Telephone Tangles | 8653 | 13.63% | 1305 | 43.30% |
| 331 - Mapping the Swaps | 2569 | 55.74% | 1297 | 85.12% |
| 10791 - Minimum Sum LCM | 5764 | 23.47% | 1294 | 76.66% |
| 10596 - Morning Walk | 4691 | 37.54% | 1289 | 90.54% |
| 10801 - Lift Hopping | 3805 | 41.50% | 1289 | 89.22% |
| 10683 - The decadary watch | 2848 | 53.90% | 1287 | 92.00% |
| 10181 - 15-Puzzle Problem | 13749 | 21.20% | 1287 | 55.63% |
| 10065 - Useless Tile Packers | 5135 | 29.25% | 1284 | 80.92% |
| 10719 - Quotient Polynomial | 3840 | 37.92% | 1283 | 82.62% |
| 327 - Evaluating Simple C Expressions | 4321 | 31.50% | 1282 | 72.07% |
| 11504 - Dominos | 6483 | 22.30% | 1281 | 70.80% |
| 705 - Slash Maze | 4669 | 40.76% | 1278 | 84.59% |
| 338 - Long Multiplication | 5892 | 9.22% | 1276 | 29.15% |
| 362 - 18,000 Seconds Remaining | 5968 | 22.39% | 1275 | 71.53% |
| 763 - Fibinary Numbers | 5938 | 19.79% | 1273 | 59.39% |
| 468 - Key to Success | 4222 | 18.92% | 1272 | 51.10% |
| 10963 - The Swallowing Ground | 5534 | 29.89% | 1269 | 87.00% |
| 10047 - The Monocycle | 4096 | 37.87% | 1265 | 81.19% |
| 10201 - Adventures in Moving - Part IV | 6453 | 20.58% | 1263 | 66.35% |
| 10551 - Basic Remains | 2581 | 53.04% | 1262 | 91.28% |
| 10375 - Choose and divide | 3521 | 36.27% | 1261 | 77.00% |
| 11321 - Sort! Sort!! and Sort!!! | 5758 | 27.89% | 1259 | 82.53% |
| 10930 - A-Sequence | 5290 | 22.63% | 1259 | 72.52% |
| 10261 - Ferry Loading | 8156 | 19.16% | 1256 | 65.37% |
| 10165 - Stone Game | 2251 | 58.86% | 1253 | 87.63% |
| 466 - Mirror, Mirror | 2526 | 55.70% | 1251 | 89.05% |
| 11934 - Magic Formula | 1897 | 77.70% | 1248 | 98.40% |
| 435 - Block Voting | 2898 | 51.79% | 1239 | 84.67% |
| 10391 - Compound Words | 5267 | 31.55% | 1232 | 80.68% |
| 10693 - Traffic Volume | 1794 | 73.58% | 1231 | 96.34% |
| 186 - Trip Routing | 3478 | 27.86% | 1225 | 65.63% |
| 337 - Interpreting Control Sequences | 2797 | 58.56% | 1224 | 91.26% |
| 585 - Triangles | 4734 | 26.78% | 1223 | 72.44% |
| 10278 - Fire Station | 8781 | 17.69% | 1216 | 63.65% |
| 10304 - Optimal Binary Search Tree | 4545 | 42.79% | 1214 | 82.45% |
| 11005 - Cheapest Base | 3705 | 35.01% | 1209 | 86.27% |
| 11220 - Decoding the message. | 3110 | 41.96% | 1206 | 90.80% |
| 10422 - Knights in FEN | 4733 | 43.67% | 1203 | 90.61% |
| 929 - Number Maze | 7184 | 22.49% | 1201 | 65.28% |
| 10171 - Meeting Prof. Miguel... | 4591 | 27.47% | 1200 | 81.25% |
| 12468 - Zapping | 2842 | 60.56% | 1198 | 96.83% |
| 10780 - Again Prime? No Time. | 4170 | 31.27% | 1196 | 77.51% |
| 10910 - Marks Distribution | 2958 | 51.28% | 1190 | 91.34% |
| 11015 - 05-2 Rendezvous | 3811 | 40.15% | 1186 | 91.91% |
| 10803 - Thunder Mountain | 4235 | 35.66% | 1183 | 85.88% |
| 10806 - Dijkstra, Dijkstra. | 4295 | 32.46% | 1182 | 74.62% |
| 11389 - The Bus Driver Problem | 2755 | 45.88% | 1180 | 88.81% |
| 10374 - Election | 3773 | 29.02% | 1179 | 74.30% |
| 10158 - War | 7830 | 25.99% | 1178 | 72.58% |
| 627 - The Net | 3008 | 40.29% | 1175 | 80.26% |
| 10891 - Game of Sum | 2935 | 51.24% | 1173 | 89.77% |
| 756 - Biorhythms | 4448 | 25.16% | 1166 | 59.78% |
| 11466 - Largest Prime Divisor | 7166 | 22.01% | 1162 | 77.37% |
| 10911 - Forming Quiz Teams | 3565 | 48.86% | 1161 | 89.66% |
| 719 - Glass Beads | 5347 | 21.38% | 1159 | 45.38% |
| 11401 - Triangle Counting | 3918 | 43.98% | 1156 | 89.36% |
| 410 - Station Balance | 5313 | 20.85% | 1151 | 59.86% |
| 168 - Theseus and the Minotaur | 6498 | 30.44% | 1150 | 64.52% |
| 10415 - Eb Alto Saxophone Player | 2633 | 48.92% | 1149 | 84.16% |
| 548 - Tree | 5315 | 29.22% | 1148 | 78.75% |
| 545 - Heads | 5793 | 13.93% | 1146 | 49.04% |
| 11110 - Equidivisions | 4501 | 27.08% | 1145 | 80.79% |
| 10306 - e-Coins | 2965 | 51.60% | 1143 | 93.44% |
| 11385 - Da Vinci Code | 4353 | 27.73% | 1142 | 83.19% |
| 10976 - Fractions Again?! | 2451 | 56.67% | 1141 | 94.83% |
| 188 - Perfect Hash | 2830 | 43.14% | 1141 | 86.59% |
| 196 - Spreadsheet | 6575 | 19.10% | 1136 | 67.78% |
| 302 - John's trip | 7031 | 20.17% | 1134 | 57.14% |
| 948 - Fibonaccimal Base | 2141 | 62.87% | 1131 | 95.76% |
| 10820 - Send a Table | 3377 | 51.41% | 1131 | 86.30% |
| 10453 - Make Palindrome | 5198 | 32.05% | 1120 | 80.71% |
| 148 - Anagram checker | 4186 | 33.99% | 1119 | 75.34% |
| 448 - OOPS! | 3669 | 46.20% | 1118 | 81.84% |
| 11995 - I Can Guess the Data Structure! | 4907 | 34.24% | 1116 | 89.87% |
| 10959 - The Party, Part I | 3095 | 42.62% | 1115 | 85.92% |
| 10814 - Simplifying Fractions | 2699 | 41.27% | 1113 | 78.35% |
| 273 - Jack Straws | 5107 | 17.64% | 1113 | 56.51% |
| 10880 - Colin and Ryan | 4197 | 30.36% | 1111 | 82.45% |
| 634 - Polygon | 2647 | 51.72% | 1109 | 90.35% |
| 11849 - CD | 3945 | 38.86% | 1106 | 81.83% |
| 10290 - {Sum+=i++} to Reach N | 7327 | 6.99% | 1104 | 15.22% |
| 10680 - LCM | 3827 | 39.04% | 1102 | 78.22% |
| 11040 - Add bricks in the wall | 2295 | 54.99% | 1101 | 90.64% |
| 590 - Always on the run | 2673 | 45.64% | 1100 | 85.91% |
| 11221 - Magic square palindromes. | 2842 | 43.56% | 1099 | 90.45% |
| 11450 - Wedding shopping | 2558 | 52.50% | 1098 | 89.89% |
| 11661 - Burger Time? | 2828 | 47.45% | 1094 | 89.85% |
| 11661 - Burger Time? | 2828 | 47.45% | 1094 | 89.85% |
| 10702 - Travelling Salesman | 4116 | 50.02% | 1090 | 89.63% |
| 11039 - Building designing | 2987 | 54.10% | 1086 | 91.62% |
| 11045 - My T-shirt suits me | 3158 | 50.89% | 1086 | 89.41% |
| 11235 - Frequent values | 5147 | 28.93% | 1085 | 71.71% |
| 11054 - Wine trading in Gergovia | 2706 | 55.10% | 1082 | 94.82% |
| 184 - Laser Lines | 3476 | 41.92% | 1082 | 83.92% |
| 11074 - Draw Grid | 2417 | 56.10% | 1079 | 94.72% |
| 871 - Counting Cells in a Blob | 3258 | 36.16% | 1078 | 89.61% |
| 10202 - Pairsumonious Numbers | 3014 | 39.45% | 1075 | 77.86% |
| 598 - Bundling Newspapers | 6850 | 22.54% | 1075 | 66.60% |
| 10088 - Trees on My Island | 4768 | 33.31% | 1070 | 85.98% |
| 314 - Robot | 4519 | 25.69% | 1066 | 67.26% |
| 641 - Do the Untwist | 2012 | 62.62% | 1065 | 90.99% |
| 10368 - Euclid's Game | 2702 | 37.05% | 1065 | 77.84% |
| 187 - Transaction Processing | 2652 | 34.24% | 1062 | 74.29% |
| 10819 - Trouble of 13-Dots | 5897 | 18.20% | 1062 | 64.60% |
| 10849 - Move the bishop | 3508 | 46.24% | 1061 | 91.80% |
| 10382 - Watering Grass | 6911 | 24.08% | 1059 | 75.45% |
| 607 - Scheduling Lectures | 4714 | 19.47% | 1059 | 52.22% |
| 11518 - Dominos 2 | 3637 | 35.28% | 1058 | 88.75% |
| 991 - Safe Salutations | 2986 | 39.22% | 1055 | 89.95% |
| 10827 - Maximum sum on a torus | 4403 | 35.93% | 1053 | 80.15% |
| 213 - Message Decoding | 2922 | 38.95% | 1052 | 82.32% |
| 10720 - Graph Construction | 4480 | 28.57% | 1052 | 75.76% |
| 11878 - Homework Checker | 2218 | 56.63% | 1051 | 95.15% |
| 10650 - Determinate Prime | 4760 | 22.29% | 1050 | 74.67% |
| 10126 - Zipf's Law | 4658 | 19.79% | 1050 | 52.86% |
| 10180 - Rope Crisis in Ropeland! | 6648 | 12.79% | 1048 | 47.33% |
| 11991 - Easy Problem from Rujia Liu? | 4290 | 41.70% | 1047 | 86.06% |
| 11495 - Bubbles and Buckets | 2904 | 50.41% | 1044 | 82.57% |
| 10500 - Robot maps | 3564 | 25.42% | 1042 | 71.69% |
| 10667 - Largest Block | 1997 | 62.99% | 1036 | 95.37% |
| 11111 - Generalized Matrioshkas | 3811 | 33.77% | 1036 | 87.84% |
| 11988 - Broken Keyboard (a.k.a. Beiju Text) | 4067 | 34.55% | 1033 | 81.22% |
| 10557 - XYZZY | 5832 | 23.44% | 1033 | 76.48% |
| 10908 - Largest Square | 2693 | 41.44% | 1029 | 90.48% |
| 535 - Globetrotter | 3494 | 29.36% | 1028 | 75.19% |
| 10635 - Prince and Princess | 3507 | 34.36% | 1027 | 80.04% |
| 10721 - Bar Codes | 2552 | 52.12% | 1022 | 93.44% |
| 551 - Nesting a Bunch of Brackets | 4317 | 30.46% | 1021 | 69.93% |
| 550 - Multiplying by Rotation | 2547 | 44.84% | 1017 | 88.00% |
| 10160 - Servicing Stations | 7634 | 16.44% | 1017 | 46.12% |
| 10227 - Forests | 2978 | 29.55% | 1013 | 72.75% |
| 10254 - The Priest Mathematician | 3812 | 43.86% | 1011 | 83.48% |
| 601 - The PATH | 3953 | 29.57% | 1009 | 71.75% |
| 11349 - Symmetric Matrix | 4499 | 27.67% | 1008 | 85.12% |
| 10689 - Yet another Number Sequence | 3105 | 34.85% | 1008 | 76.39% |
| 11830 - Contract Revision | 1759 | 70.38% | 1004 | 97.11% |
| 10337 - Flight Planner | 2284 | 47.81% | 1001 | 87.41% |
| 11520 - Fill the Square | 1872 | 64.42% | 1000 | 97.10% |
鉴于后面还有好多，就发到这里了。。。少于1000的就不发了。