fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long ll;
  4. const int Mod=1e9+7;
  5. const ll INF = 10000000000000;
  6. const int N = 1e6+7;
  7.  
  8. void solve() {
  9.    ll n,x;
  10.    cin >> n >> x;
  11.    vector<ll> a(n+1);
  12.    for(int i=1;i<=n;i++) cin >> a[i];
  13.    vector<ll> dp(N,0);
  14.    sort(a.begin(),a.end());
  15.    for(int i=1;i<=n;i++) dp[a[i]]=1;
  16.    for(int i=1;i<N;++i){
  17.       for(int j=1;j<=n;j++){
  18.         if(dp[i]!=0){
  19.             if(i+a[j]<N) dp[i+a[j]]+=dp[i]%Mod;
  20.         }
  21.       }
  22.    }
  23.    cout << dp[x]%Mod;
  24. }       
  25.  
  26. int main(){ 
  27.     ios::sync_with_stdio(false);
  28.     cin.tie(nullptr);
  29.  
  30.     /*int t;
  31.     cin >> t;
  32.     while (t--)*/ solve();
  33.  
  34.  
  35.     return 0;
  36. }
  37.  
Success #stdin #stdout 0.02s 11100KB
comments (?)
stdin
copy 
3 9
2 3 5
stdout
copy 
8
https://ideone.com/fqfhDI
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!