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  1. #include<bits/stdc++.h>
  2. #define endl "\n"
  3. using namespace std ;
  4. int main() {
  5.     ios::sync_with_stdio(NULL) ;
  6.     cin.tie(NULL) ;
  7.     cout.tie(NULL) ;
  8.     int t ;
  9.     cin >> t ;
  10.     while( t-- ) {
  11.         int n, a ;
  12.         cin >> n ;
  13.         int sum = 0, cnt1 = 0, cnt2 = 0;
  14.         for( int i = 0 ; i < n ; i++ ) {
  15.             cin >> a ;
  16.             sum += a ;
  17.             if( a == 1 )
  18.                 cnt1++ ;
  19.             else
  20.                 cnt2++ ;
  21.         }
  22.         if( sum % 2 == 1 )
  23.             cout << "NO" << endl ;
  24.         else {
  25.             if( cnt2 % 2 == 0 )
  26.                 cout << "YES" << endl ;
  27.             else {
  28.                 if( cnt1 > 0 )
  29.                     cout << "YES" << endl ;
  30.                 else
  31.                     cout << "NO" << endl ;
  32.             }
  33.         }
  34.     }
  35.     return 0 ;
  36. }
  37.  
Success #stdin #stdout 0s 5292KB
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https://ideone.com/DnwCYM
language:
C++14 (gcc 8.3)
created:
327 days ago
visibility:
secret

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