#include <bits/stdc++.h> 
using namespace std;
#include <ios>
#include <iomanip>
  
int main() {
  int a,b;
  char c;
  cin>>a>>b>>c;
  if(a==b){
   if(c=='='){
    cout << "YES";
  }
  else{
   cout <<"NO";
  }
  }
 else if(a<=b){
   if(c=='<'){
    cout<< "YES";
  }
  else{
   cout <<"NO";
  }
 }
  else if(a>=b){
   if(c=='>'){
    cout << "YES";
  }
  else{
   cout <<"NO";
  }
  }
}