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

int main(){
    int s,t;
    cin >>s >> t;
    string a;
    cin >>a;
    if(a=="<"){

        if(s<t){
            cout  << "YES" << endl;
        }
        else{
            cout << "NO" << endl;
        }

    }else if(a==">"){
        if(s>t){
            cout << "YES" << endl;
        }else{
            cout << "NO" << endl;
        }
    }else{
        if(s==t){
            cout << "YES" << endl;
        }
        else{
            cout << "NO" << endl;

    }
        }
 
 

}