#include <iostream>
#include <string>
using namespace std;

int main(){
    int s, t;
    string c;
    cin >> s >> t >> c;
    bool isyes = false;
    if(c == "=" && s == t) isyes = true;
    else if(c == "<" && s < t) isyes = true;
    else if(c == ">" && s > t) isyes = true;

    if(isyes) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}