// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
int main() {
    // Input
    int S, T;
    char c;
    cin >> S >> T >> c;

    // Output
    if (c == '<') cout << (S < T ? "YES" : "NO") << endl;
    if (c == '>') cout << (S > T ? "YES" : "NO") << endl;
    if (c == '=') cout << (S == T ? "YES" : "NO") << endl;
}