[C++] 백준 2875번 대회 or 인턴

greedy

 

#include <iostream>
using namespace std;

int main() {

	int n, m, k;
	cin >> n >> m >> k;

	int answer = 0;

	while (n >= 2 && m >= 1 && n + m >= k + 3) {
		answer++;
		m -= 1;
		n -= 2;
	}

	cout << answer << "\n";

	return 0;
}