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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int N,A,H,M,S; cin >> N >> A >> H >> M >> S;
    int left = (24-H)*3600;
    left -= 60*M+S;
    if(left <= N*A) cout << "Yes\n";
    else cout << "No\n";
}