poj_1837

 1 #include <cstdio>
 2 #include <cstring>
 3 
 4 #define MAXN 20
 5 
 6 int C, G, dp[MAXN+1][2*MAXN*15*25+1], hook[MAXN+1], weight[MAXN+1];
 7 
 8 int main(int argc, char const *argv[])
 9 {
10     // freopen("in", "r", stdin);
11     scanf("%d%d", &C, &G);
12     for(int i = 1; i <= C; ++i)
13         scanf("%d", &hook[i]);
14     for(int i = 1; i <= G; ++i)
15         scanf("%d", &weight[i]);
16 
17     // initialize
18     memset(dp, 0 ,sizeof(dp));
19     dp[0][7500] = 1;
20 
21     // dp
22     for(int i = 1; i <= G; ++i)
23         for(int j = 0; j <= 15000; ++j)
24             if(dp[i-1][j])
25                 for(int k = 1; k <= C; ++k)
26                     dp[i][ j+hook[k]*weight[i] ] += dp[i-1][j];
27 
28     printf("%d\n", dp[G][7500]);
29     return 0;
30 }