#include<bits/stdc++.h>
using namespace std;
int main(){
    string s,t,tmp;
    cin>>s>>t;
    istringstream ss(s),st(t);
    vector<int> a,b;
    while(getline(ss,tmp,'.')){
        a.emplace_back(stoi(tmp));
    }
    while(getline(st,tmp,'.')){
        b.emplace_back(stoi(tmp));
    }
    int asum=0,bsum=0;
    for(int i=0;i<3;++i){
        asum+=a[i]*pow(101,2-i);
        bsum+=b[i]*pow(101,2-i);
    }
    puts(asum>=bsum?"YES":"NO");
}