func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n, m;       cin >> n >> m;       long long int a[n], b[n], c[n], d[n];       bool f = false;       for (long long int i = 0; i < n; i = i + 1) {         cin >> a[i] >> b[i] >> c[i] >> d[i];         if (b[i] == c[i]) {           f = true;         }       }       if (m % 2 != 0 || f == false) {         cout <<  NO  << endl;       } else {         cout <<  YES  << endl;       }     }   }   