func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long a, n, trans = 0, cnt = 0, b, c, m, s, d;     vector<int> v, vd;     cin >> n;     for (long long x = 0; x < n; x++) {       cin >> m;       v.clear();       for (long long j = 0; j < m; j++) {         cin >> d;         v.push_back(d);       }       sort(v.rbegin(), v.rend());       vd.clear();       trans = 0;       for (long long j = 1; j < v.size(); j++) {         if ((v[j] - v[0]) % 2 != 0) {           trans = 1;           cout <<  NO  << endl;           break;         }       }       if (trans == 0) cout <<  YES  << endl;     }   }   