#include <bits/stdc++.h>
using namespace std;

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