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

int main()
{
	int S, T;
	char c;
	cin >> S >> T >> c;

	string ans = "NO";
	if( c == '=' ) {
		if( S == T ) ans = "YES";
	}
	else if( c == '<' ) {
		if( S < T ) ans = "YES";
	}
	else if( c == '>' ) {
		if( S > T ) ans = "YES";
	}

	cout << ans << endl;
}