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

int N, A, H, M, S;

int main(){
	cin >> N >> A >> H >> M >> S;
	int seconds = (24 - H) * 60 * 60;
	seconds += (60 - M) * 60;
	seconds += 60 - S;
	
	cout << (seconds / A <= N ? "Yes" : "No") << endl;
}