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

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>

int main() {
  int s, t;
  char c;
  cin >> s >> t >> c;

  string ans = "NO";
  if (c == '<' && s < t) ans = "YES";
  if (c == '>' && s > t) ans = "YES";
  if (c == '=' && s == t) ans = "YES";
  cout << ans << endl;

  


}