usaco-4.1-nuggets-passed

呵呵，这个数论题

/*
ID: qq104801
LANG: C++
TASK: nuggets
*/

#include <iostream>
#include <fstream>
#include <cstring>
#include <vector>
#include <queue>
#include <stack>
#include <algorithm>
using namespace std;

#define nmax 79500

int d[500000],temp,n;

void test()
{    
    freopen("nuggets.in","r",stdin);
    freopen("nuggets.out","w",stdout);  
    d[0]=1;
    cin>>n;
    while(n--)
    {
        cin>>temp;
        for(int i=temp;i<=nmax;i++)if(d[i-temp])d[i]=1;
    }
    temp=0;
    for(int i=nmax;i>=0;i--)if(!d[i]){temp=i;break;}
        for(int i=nmax;i>=79000;i--)if(!d[i]){temp=0;break;}
    cout<<temp<<endl;
    
}

int main () 
{        
    test();        
    return 0;
}

test data :

USACO Training
Grader Results     
13 users online
AUT/1 BGD/1 CHL/1 CHN/7 GBR/1 IND/1 SWE/1

USER: cn tom [qq104801]
TASK: nuggets
LANG: C++

Compiling...
Compile: OK

Executing...
   Test 1: TEST OK [0.005 secs, 5324 KB]
   Test 2: TEST OK [0.005 secs, 5324 KB]
   Test 3: TEST OK [0.008 secs, 5324 KB]
   Test 4: TEST OK [0.008 secs, 5324 KB]
   Test 5: TEST OK [0.005 secs, 5324 KB]
   Test 6: TEST OK [0.008 secs, 5324 KB]
   Test 7: TEST OK [0.014 secs, 5324 KB]

All tests OK.

YOUR PROGRAM ('nuggets') WORKED FIRST TIME! That's fantastic -- and a rare thing. Please accept these special automated congratulations.

Here are the test data inputs:

------- test 1 ----
3
3
6
10
------- test 2 ----
2
2
3
------- test 3 ----
1
1
------- test 4 ----
4
252
250
254
256
------- test 5 ----
2
255
254
------- test 6 ----
5
251
252
250
254
256
------- test 7 ----
10
238
240
242
244
246
248
250
252
254
255

Keep up the good work!
Thanks for your submission!