//Normal

#define _GLIBCXX_DEBUG
#define ll long long
#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;

void print(auto a){
  cout << a;
}

void prints(auto a){
  cout << a << " ";
}

void prints(){
  cout << " ";
}

void printl(auto a){
  cout << a << endl;
}

void printl(){
  cout << endl;
}

void fix(int n){
  cout << fixed << setprecision(n);
}

int main(){
  int S, T; cin >> S >> T;
  char C; cin >> C;
  bool flag = false;
  
  switch(C){
    case '<': if(S < T) flag = true; break;
    case '=': if(S == T) flag = true; break;
    case '>': if(S > T) flag = true; break;
  }
  
  flag ? printl("YES") : printl("NO");
  
  return 0;
}