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

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