#include <bits/stdc++.h>
#include "bits/stdc++.h"
#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <string>
#include <sstream>
#include <cmath>
#include <stack>
#include <queue>
#include <cctype>
#include <stdio.h>
#include <map>
#include <unordered_map>
#include <string.h>
#include <utility>

typedef long long ll;
const int INF = 1e8;

#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
using namespace std;

typedef pair<int, int> P;



int main() {

	string s,ss;
	cin>>s>>ss;


	if(s[0]-'0' >= ss[0]-'0' && s[2]-'0' >= ss[2]-'0' && s[4]-'0' >= ss[4]-'0'){
		cout<<"YES"<<endl;
	}else {
		cout<<"NO"<<endl;
	}
	return 0;
}