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

int main() {
    int a,b;
    char c;
    cin>>a>>b>>c;
    if ( a>b && c=='>' ) cout<<"YES"<<'\n';
    else if ( a<b && c=='<' ) cout<<"YES"<<'\n';
    else if ( a==b && c=='=' ) cout<<"YES"<<'\n';
    else cout<<"NO"<<'\n';
    return 0;
}