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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. // vjudge.net/contest/456753#problem/A
  6.  
  7. int main() {
  8.     int n = 4;
  9.     vector<int> v(n);
  10.     for (int i = 0; i < n; ++i) {
  11.         cin >> v[i];
  12.     }
  13.  
  14.     for (int msk = 0; msk < (1 << n); ++msk) {
  15.         int sum1 = 0, sum2 = 0;
  16.         for (int i = 0; i < n; ++i) {
  17.             if ((1 << i) & msk) {
  18.                 sum1 += v[i];
  19.             } else {
  20.                 sum2 += v[i];
  21.             }
  22.         }
  23.         if (sum1 == sum2)
  24.         {
  25.             puts("Yes");
  26.             return 0;
  27.         }
  28.     }
  29.  
  30.     puts("No");
  31.  
  32.  
  33. }
Success #stdin #stdout 0s 5524KB
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stdin
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Standard input is empty
stdout
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Yes
https://ideone.com/bvHZO3
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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