fn main() {
	proconio::input! {
		n: i32,
		a: i32,
		h: i32,
		m: i32,
		s: i32
	}
	let hit = n * a;
	let rem = 86400 - (h * 3600 + m * 60 + s);
	if hit >= rem {
		println!("Yes");
	} else {
		println!("No");
	}
}