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  1. #include <bits/stdc++.h>
  2. #define endl '\n'
  3. using namespace std;
  4. using ll = long long;
  5.  
  6. ll dp[3010][3010];
  7. int n,m;
  8. ll pre[3010];
  9. ll a[3010];
  10. ll b[3010];
  11. ll MOD = 1000000007;
  12.  
  13. int main(){
  14.     ios_base::sync_with_stdio(false);
  15.     cin.tie(NULL);
  16.     freopen("DIVGROUP.INP","r",stdin);
  17.     freopen("DIVGROUP.OUT","w",stdout);
  18.     cin >> n >> m;
  19.     for(int i = 1; i <= n; i++){
  20.         cin >> a[i];
  21.         pre[i] += pre[i-1] + a[i];
  22.     }
  23.     for(int j = 1; j <= m; j++){
  24.         cin >> b[j];
  25.     }
  26.     dp[0][0] = 1;
  27.     for(int j = 1; j <= m; j++){
  28.         for(int i = j; i <= n; i++){
  29.             for(int k = j - 1; k < i; k++){
  30.                 if((pre[i] - pre[k]) % b[j] == 0){
  31.                     dp[i][j] = (dp[i][j] + dp[k][j-1]) % MOD;
  32.                 }
  33.             }
  34.         }
  35.     }
  36.     cout << dp[n][m];
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/UsWihE
language:
C++ (gcc 8.3)
created:
20 hours ago
visibility:
public

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