#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001

int main(){
	
	int s,t;
	cin>>s>>t;
	char c;
	cin>>c;
	bool f = false;
	if(c=='='&&s==t)f = true;
	if(c=='<'&&s<t)f = true;
	if(c=='>'&&s>t)f = true;
	if(f)cout<<"YES"<<endl;
	else cout<<"NO"<<endl;
	
	return 0;
}