#include <iostream>
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;
    }
}