#include<iostream>
#include<string>
#include<math.h>
#include<stdlib.h>
#include<string>
#include<cstdio>
#include<stack>
using namespace std;
int main() {
	int y, m, d;
	cin >> y >> m >> d;
	if ((y < 2019)&&(1989 <= y)) {
		if ((y == 1989)&&(m == 1)&&(d<8)) {
			cout << "No";
			
		}
		else {
			cout << "Yes";
		}
	}
	else if(y == 2019) {
		if (m <= 4) {
			cout << "Yes";
		}
		else {
			cout << "No";
		}
	
	}
	else {
		cout << "No";
	}
}