대회 or 인턴 C++

#include <iostream>
#include <algorithm>

using namespace std;
int n, m, k;
int answer = -1;

void calmax(int girl, int boy, int i) {
	int value = min(girl / 2, boy);
	if (i == 0) {
		answer = max(answer, value);
		return;
	}
	else {
		if (value < answer)
			return;
		if(girl/2 >= boy)
			calmax(girl - 1, boy, i - 1);
		else
			calmax(girl, boy - 1, i - 1);
	}
}

int main(void) {
	cin >> n >> m >> k;

	calmax(n,m,k);
	cout << answer << endl;
	return 0;
}