#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
typedef long long ll;
using namespace std;

int main() {
    int a, b;
    string s;
    cin >> a >> b >> s;

    bool flag = true;
    if (s == ">" && a < b)
        flag = false;
    else if (s == "<" && a > b)
        flag = false;
    else if (s == "=" && a != b)
        flag = false;

    flag ? cout << "YES" : cout << "NO";
    cout << endl;

    return 0;
}