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  1.  
  2.  
  3. #include <bits/stdc++.h>
  4. using namespace std;
  5. #define endl "\n"
  6. #define ll long long
  7. #define faster() ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
  8. const int MOD = 1e9 + 7 ;
  9.  
  10. int a[105];
  11. bool used[105]; bool flag = false ;
  12. int n , total  ; 
  13. void Try(int i , int sum){
  14.     if(flag) return ;
  15.  
  16.     for(int j = i ; j <= n ; j++){
  17.         sum += a[j];
  18.         if(sum == total) flag = true ;
  19.         else if(sum < total) Try(i + 1 , sum);
  20.         sum -= a[j];
  21.     }
  22. }
  23.  
  24. void solve(){
  25.     total = 0 ;
  26.     cin >> n  ;
  27.     for(int i = 1 ; i <= n ; i++){
  28.         cin >> a[i];
  29.         total += a[i];
  30.     }
  31.     if(total % 2 != 0) cout << "0" << endl ;
  32.     else{
  33.         total /= 2 ;
  34.         Try(1 , 0);
  35.         if(flag) cout << "1" << endl;
  36.         else cout << "0" << endl;
  37.     }
  38. }   
  39.  
  40.  
  41. int main() {
  42.     faster(); 
  43.     int test = 1 ; 
  44.     // cin >> test ;
  45.     while(test--)   solve();
  46.     return 0;
  47. }
  48.  
  49.  
  50.  
Success #stdin #stdout 0s 5284KB
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https://ideone.com/QMEmvu
language:
C++ (gcc 8.3)
created:
131 days ago
visibility:
public

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