A Mathematical Curiosity
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 41995 Accepted Submission(s): 13502
Problem Description
Given
two integers n and m, count the number of pairs of integers (a,b) such
that 0 < a < b < n and (a^2+b^2 +m)/(ab) is an integer.
This problem contains multiple test cases!
The first line of a multiple input is an integer N, then a blank line followed by N input blocks. Each input block is in the format indicated in the problem description. There is a blank line between input blocks.
The output format consists of N output blocks. There is a blank line between output blocks.
This problem contains multiple test cases!
The first line of a multiple input is an integer N, then a blank line followed by N input blocks. Each input block is in the format indicated in the problem description. There is a blank line between input blocks.
The output format consists of N output blocks. There is a blank line between output blocks.
Input
You
will be given a number of cases in the input. Each case is specified by
a line containing the integers n and m. The end of input is indicated
by a case in which n = m = 0. You may assume that 0 < n <= 100.
Output
For
each case, print the case number as well as the number of pairs (a,b)
satisfying the given property. Print the output for each case on one
line in the format as shown below.
Sample Input
1 10 1 20 3 30 4 0 0
Sample Output
Case 1: 2 Case 2: 4 Case 3: 5
Source
分析：一道水题被我写的乱七八糟的，各种格式不对，首先m,n只要有一个为0就break，然后就是这个输出空行，输出格式输错了，GG！
下面给出AC代码：
1 #include <bits/stdc++.h> 2 using namespace std; 3 int n,m; 4 int main() 5 { 6 int t; 7 scanf("%d",&t); 8 while(t--) 9 { 10 int k=1; 11 while(scanf("%d%d",&n,&m)&&n||m) 12 { 13 int ans=0; 14 for(int i=1;i<n;i++) 15 { 16 for(int j=i+1;j<n;j++) 17 { 18 if((i*i+j*j+m)%(i*j)==0) 19 ans++; 20 } 21 } 22 printf("Case %d: %d ",k++,ans); 23 } 24 if(t) 25 printf(" "); 26 } 27 return 0; 28 }