func_code_string: #include <bits/stdc++.h>   const int32_t mod = 1e9 + 7;   using namespace std;   unordered_map<long long, long long> mp;   void fun(vector<long long>& v, long long idx, long long sum) {     if (idx == (long long)v.size()) {       mp[sum]++;       return;     }     fun(v, idx + 1, sum);     fun(v, idx + 1, sum - v[idx]);     fun(v, idx + 1, sum + v[idx]);   }   void solve(long long test) {     long long n;     cin >> n;     mp.clear();     vector<long long> v(n);     for (long long i = 0; i < n; i++) {       cin >> v[i];     }     fun(v, 0, 0);     if (mp[0] > 1)       cout <<  YES             <<   n ;     else       cout <<  NO             <<   n ;   }   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     long long t = 1;     cin >> t;     long long i = 1;     while (i <= t) {       solve(i);       i++;     }     return 0;   }   