func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long t;     cin >> t;     while (t--) {       long long n;       cin >> n;       long long a[n];       for (long long i = 0; i < n; i++) cin >> a[i];       sort(a, a + n);       long long flg = 0;       for (long long i = 0; i < n - 1; i++)         if (a[i] == a[i + 1]) flg = 1;       if (flg)         cout <<  YES  << endl;       else         cout <<  NO  << endl;     }   }   