#include <bits/stdc++.h>
using namespace std;
int main() {
    int s, t;
    char op;
    cin >> s >> t >> op;
    if (op == '<') {
        if (s < t) {
            cout << "YES" << endl;
            return 0;
        }
        cout << "NO" << endl;
        return 0;
    }
    if (op == '>') {
        if (s > t) {
            cout << "YES" << endl;
            return 0;
        }
        cout << "NO" << endl;
        return 0;
    }
    if (s == t) {
        cout << "YES" << endl;
        return 0;
    }
    cout << "NO" << endl;
    return 0;
}