\begin{array}{c} \color{#FFF2D0}{H}  \color{#FFE8C0}{o}  \color{#FFDFAF}{r}  \color{#FFE8C0}{i}  \color{#FFF2D0}{z} \color{#FFEFC7}{o}  \color{#FFD8A8}{n}  \end{array} $\\$

/*
    author - Horizon
    created - 12:35PM - 18/03/2025
*/
#include <bits/stdc++.h>
using namespace std;
#define TASK ""
#define ll long long

int main() {
    ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	if (fopen(TASK".inp","r")) {
        freopen(TASK".inp","r",stdin);
        freopen(TASK".out","w",stdout);
    }
    string n,t; cin >> n;
    t=n; 
    reverse(n.begin(),n.end());
    cout << (t==n?"YES":"NO");
}