#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    int s, t;
    string c;
    cin >> s >> t >> c;
    if (c == "<"){
        if (s < t) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
    if (c == ">"){
        if (s > t) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
    if (c == "="){
        if (s == t) cout << "YES" << endl;
        else cout << "NO" << endl;
    } 
}