#include <iostream>

int main() {
  int S, T; std::cin >> S >> T;
  char c; std::cin >> c;

  bool ok = false;
  if (c == '<') ok = S < T;
  if (c == '>') ok = S > T;
  if (c == '=') ok = S == T;

  std::cout << (ok ? "YES" : "NO") << "\n";

  return 0;
}