func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       if (n == 1) {         int x;         cin >> x;         cout <<  YES ;       } else {         vector<int> a(n);         bool flag = true;         cin >> a[0];         for (int i = 1; i < n; ++i) {           cin >> a[i];           if ((a[i] % 2) != (a[i - 1] % 2)) {             flag = false;           }         }         if (flag) {           cout <<  YES ;         } else {           cout <<  NO ;         }       }       cout <<   n ;     }   }   