#include <bits/stdc++.h>
using namespace std;
#define rep(i,l,r) for(int i=(l);i<(r);++i)
typedef long long ll;

int main(){
	int s,t; char c; cin>>s>>t>>c;
	if(c=='<') cout<<(s<t?"YES":"NO")<<endl;
	if(c=='>') cout<<(s>t?"YES":"NO")<<endl;
	if(c=='=') cout<<(s==t?"YES":"NO")<<endl;
}