제출 #658405

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
658405		Foxyy	Logičari (COCI21_logicari)	C++17	10 / 110	41 ms	6036 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define Foxyy cin.tie(0); cout.sync_with_stdio(0); cout.tie(0);

struct Solver {
	int& n;
	vector<vector<int>>& adj;
	
	void solve() {
		if (n % 4 != 0) {
			cout << "-1\n";
			return;
		}
		cout << n/2 << '\n';
	}
};

signed main() {
	Foxyy
	
	int T = 1;
//	cin >> T;
	while(T--) {
		int n;
		cin >> n;
		vector<vector<int>> adj(n);
		for (int i = 0; i < n; i++) {
			int a, b;
			cin >> a >> b;
			a--, b--;
			adj[a].push_back(b);
			adj[b].push_back(a);
		}
		
		Solver solver{n, adj};
		solver.solve();
	}
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 40
• Subtask 4: 0 / 50