#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using namespace std;

typedef long long ll;

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