func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     long long int t, n, i, x, mx, mn, f, j, s, r, y, c, m, k, c1;     cin >> t;     while (t--) {       cin >> n;       vector<long long int> v;       f = 0;       for (i = 0; i < n; i++) {         cin >> x;         v.push_back(x);         if (x == 0) f = 1;       }       s = 2;       r = pow(3, n);       while (s < r) {         x = s;         s++;         c = c1 = 0;         set<long long int> S;         for (i = 0; i < n; i++) {           if (x % 3 == 1)             c += v[i];           else if (x % 3 == 2)             c -= v[i];           else             S.insert(v[i]);           x /= 3;         }         if (S.count(c)) f = 1;       }       if (f)         cout <<  YES  << endl;       else         cout <<  NO  << endl;     }   }   