`color(#FFFFFFff)(H)color(#E7E7E7ff)(o)color(#CFCFCFff)(r)color(#B7B7B7ff)(i)color(#9F9F9Fff)(z)color(#878787ff)(o)color(#6F6F6Fff)(n)`

#include <bits/stdc++.h>
using namespace std;

int main() {
    string n; cin >> n;
    string c = n;
    reverse(n.begin(), n.end());
    cout << (n == c ? "YES":"NO");
}