func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = long long;   template <class A, class B>   ostream& operator<<(ostream& os, const pair<A, B>& p) {     return os <<  (  << p.first <<  ,   << p.second <<  ) ;   }   template <class T>   auto operator<<(ostream& os, T&& x) -> decltype(x.begin(), os) {     os <<  { ;     for (auto it = x.begin(); it != x.end(); ++it)       os << *it << (it == prev(x.end()) ?    :  ,  );     return os <<  } ;   }   void dump() {}   template <class T, class... Args>   void dump(T&& x, Args... args) {     cerr << x <<  ;   ;     dump(args...);   }   int t, n, m;   void solve() {     cin >> n >> m;     bool ans = false;     for (int i = 0; i < n; ++i) {       int x, y, z, w;       cin >> x >> y >> z >> w;       if (y == z) ans = true;     }     if (m % 2 == 0 && ans)       cout <<  YES n ;     else       cout <<  NO n ;   }   int main() {     ios::sync_with_stdio(false);     for (cin >> t; t--;) solve();     return 0;   }   