제출 #698750

#제출 시각아이디문제언어결과실행 시간메모리
698750CyanmondNewspapers (CEOI21_newspapers)C++17
4 / 100
1 ms212 KiB
#include <bits/stdc++.h> int main() { int N, M; std::cin >> N >> M; std::vector<int> A(M), B(M); std::vector<int> deg(N); for (int i = 0; i < M; ++i) { std::cin >> A[i] >> B[i]; --A[i], --B[i]; ++deg[A[i]]; ++deg[B[i]]; } int u = 0; for (auto &e : deg) { if (e >= 3) { ++u; } } if (M == N - 1 and u <= 1) { std::cout << "YES" << std::endl; std::cout << 1 << std::endl; std::cout << 1 << std::endl; } else { std::cout << "NO" << std::endl; } }
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