#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < n; i++)
#define srep(i,a,b) for(int i = a; i < b; i++)
#define all(A) (A).begin(),A.end()
#define MOD 1000000007
using namespace std;
using ll = long long;
using P = pair<char,int>;
using Graph = vector<vector<int>>;

int main(void){
	int s,t; cin >> s >> t;
	char c; cin >> c;
	if(c == '<') cout << (s < t ? "YES" : "NO");
	else if(c == '>') cout << (s > t ? "YES" : "NO");
	else cout << (s == t ? "YES" : "NO");
}