#include<bits/stdc++.h>
using namespace std;
using ll = long long;

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

#define FOR(i,a,b) for(ll i=(a);i<(b);++i)
#define ALL(v) (v).begin(), (v).end()
#define p(s) cout<<(s)<<endl
#define p2(s, t) cout << (s) << " " << (t) << endl
#define br() p("")
#define pn(s) cout << (#s) << " " << (s) << endl
#define p_yes() p("YES")
#define p_no() p("NO")

vector<string> split_str(string s, char c){
    vector<string> ret;
    stringstream ss;
    FOR(i, 0, s.size()){
        if(s[i]==c){
            ret.push_back(ss.str());
            ss.str("");
            ss.clear();
        }else{
            ss << s[i];
        }
    }
    ret.push_back(ss.str());
    return ret;
}

ll f(string s){
    auto lis = split_str(s, '.');
    ll v = 100000000 * stoll(lis[0]) + 10000 * stoll(lis[1]) + stoll(lis[2]);
    return v;
}

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    // input
    string s, t;
    cin >> s >> t;

    ll v = f(s);
    ll w = f(t);
    
    if(v>=w){
        p_yes();
    }else{
        p_no();
    }
    
    return 0;
}