#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,c,p,q,r;
    char ch;
    cin>>a>>ch>>b>>ch>>c>>p>>ch>>q>>ch>>r;
    if((a>p)||(a>=p&&b>q)||(a>=p&&b>=q&&c>=r)){
        cout<<"YES"<<endl;
    }else cout<<"NO"<<endl;
    return 0;
}