func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[120], n, t;   bool check();   int main() {     cin >> t;     while (t--) {       cin >> n;       for (int i = 1; i <= n; i++) cin >> a[i];       sort(a + 1, a + n + 1);       if (check())         cout <<  YES n ;       else         cout <<  NO n ;     }   }   bool check() {     for (int i = 1; i < n; i++) {       if (a[i + 1] == a[i] || a[i + 1] == a[i] + 1)         continue;       else         return false;     }     return true;   }   