#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;

int main() {
  string S, T; cin >> S >> T;
  S += ".", T += ".";
  vector<int> A(3), B(3);
  int now = 0, val = 0;
  for(int i = 0; i < (int)S.size(); i++){
    if(S[i] != '.'){
      val *= 10;
      int C = S[i]-48;
      val += C;
    }else{
      A[now] = val;
      val = 0;
      now++;
    }
  }
  now = 0, val = 0;
  for(int j = 0; j < (int)T.size(); j++){
    if(T[j] != '.'){
      val *= 10;
      int C = T[j]-48;
      val += C;
    }else{
      B[now] = val;
      val = 0;
      now++;
    }
  }
  for(int i = 0; i < 3; i++){
    if(A[i] == B[i]) continue;
    if(A[i] < B[i]) cout << "NO" << endl;
    else cout << "YES" << endl;
    return 0;
  }
  cout << "YES" << endl;
}