#include <iostream>

using namespace std;

int main()
{
    int S, T;
    char c;
    cin >> S >> T >> c;
    
    bool comp;
    
    switch (c)
    {
    case '>':
        comp = (S > T); 
        break;
    case '<':
        comp = (S < T); 
        break;
    case '=':
        comp = (S == T); 
        break;
    }
    
    cout << (comp ? "YES" : "NO") << endl;
    
    return 0;
}