提交记录

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

int main() {
	long long n, m, a, b;
	cin >> n >> m >> a >> b;
	long long k = n * m;
	if (a < n && b < m) {
		cout << "Program ends with return value 0.";
	} else if (b - (m - 1) <= (n - (a + 1))*m && a < n) {
		cout << "Program ends with return value 0.";
	} else if (b < m && a - (n - 1) <= (m - (b + 1))*n) {
		cout << "Program ends with return value 0.";
	} else {
		cout << "Segmentation fault.";
	}
	return 0;
}

样例过了，看不出来哪里错了qwq