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

int main() {
  int S, T; cin >> S >> T;
  char c; cin >> c;
  string ans = "NO";
  if(c == '<' and S < T) ans = "YES";
  if(c == '>' and S > T) ans = "YES";
  if(c == '=' and S == T) ans = "YES";
  cout << ans << endl;
}