#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>>c>>q>>c>>r;
    if(a>p||a>=p&&b>q||a>=p&&b>=q&&c>=r){
        cout<<"YES"<<endl;
    }else cout<<"NO"<<endl;
    return 0;
}