/* -*- coding: utf-8 -*-
 *
 * 3406.cc:  No.3406 Joya no Kane - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* main */

int main() {
  int n, a, h, m, s;
  scanf("%d%d%d%d%d", &n, &a, &h, &m, &s);

  int t = 24 * 60 * 60 - ((h * 60 + m) * 60 + s);

  if (n * a >= t) puts("Yes");
  else puts("No");
  
  return 0;
}