/* -*- coding: utf-8 -*-
 *
 * 1543.cc:  No.1543 [Cherry 2nd Tune A] これがプログラミングなのね - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int s, t;
  char op[4];
  scanf("%d%d%s", &s, &t, op);

  if ((op[0] == '>' && s > t) ||
      (op[0] == '<' && s < t) ||
      (op[0] == '=' && s == t)) puts("YES");
  else puts("NO");
  return 0;
}