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

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