#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main(){

    int a, b;
    char c;
    cin >> a >> b >> c;
    if (c == '<') cout << (a<b ? "YES" : "NO") << endl;
    if (c == '=') cout << (a==b ? "YES" : "NO") << endl;
    if (c == '>') cout << (a>b ? "YES" : "NO") << endl;

    return 0;
}