#include <bits/stdc++.h>
using namespace std;
int main(){
  int S, T;
  char c;
  cin >> S >> T >> c;
  if (c == '<'){
    if (S < T){
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
  }
  if (c == '>'){
    if (S > T){
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
  }
  if (c == '='){
    if (S == T){
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
  }
}