#include <bits/stdc++.h>

using namespace std;

int main()
{
    long long S, T;
    string c;
    cin >> S >> T >> c;
    if (c == "=") {
        if (S == T) cout << "YES";
        else cout << "NO";
        return 0;
    }
    if (c == ">") {
        if (S > T) cout << "YES";
        else cout << "NO";
        return 0;
    }
    if (c == "<") {
        if (S < T) cout << "YES";
        else cout << "NO";
        return 0;
    }
    return 0;
}