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

int main(){
int S,T;
char c;
cin >> S >> T >> c ;
bool flg;
switch(c){
case '<':
 flg = (S<T);
break;
case '>':
 flg = (S>T);
break;
case '=':
 flg = (S==T);
}
if(flg)
 cout << "YES" << endl;
else
 cout << "NO" << endl;
}