#include<iostream>
using namespace std;
int main(){
    int a,b,c;
    cin>>a>>b>>c;
    if(1989<=a&&a<=2019){
        if((a==1989&&b==1&&c<8)||(a==2019&&b>4
)){
            cout<<"No"<<endl;
        }else{
            cout<<"Yes"<<endl;
        }
    }else{
        cout<<"No"<<endl;
    }
}