#include<stdio.h>

int main(void){
  int y, m, d;
  scanf("%d%d%d", &y, &m, &d);
  if((y < 1989 || 2019 < y) || ((y == 1989 && m == 1) && (d < 8)) || ((y == 2019) && (m > 4)))
    printf("NO");
  else
    printf("YES");
  return 0;
}