#include<iostream>
#include<string>
#include<vector>
#include<cstring>
#include<algorithm>
#include<stdio.h>
#include<cmath>

using namespace std;

int main()
{
	int y;
	int m;
	int d;

	cout<<"	日つけを入力"<<endl;
	cout<<"年"<<endl;
	scanf("%d",&y);
	cout<<"月"<<endl;
	scanf("%d",&m);
	cout<<"日"<<endl;
	scanf("%d",&d);

	if(y > 1990 && y < 2019)
	{
		cout<<"YES"<<endl;
	}

	else if(y == 1989 && m >1 )
	{
		cout<<"YES"<<endl;
	}
	else if(y == 1989 && m==1 && d>=8)
	{
		cout<<"YES"<<endl;
	}
	else if(y == 2019 && m <4)
	{
		cout<<"YES"<<endl;
	}
	else if( y ==2019 && m ==4 && d<=30)
	{
		cout<<"YES"<<endl;
	}
	else
	{
		cout<<"NO"<<endl;
	}


}