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

int main(){
    int S,T;
    char c;
    cin >> S >> T >> c;
    if(c == '<'){
        if(S < T) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
    if(c == '='){
        if(S == T) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
    if(c == '>'){
        if(S > T) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
}