14行高定，急速完工

#include<bits/stdc++.h>
using namespace std;
bool is_pal(string a){
    string b=a;
    reverse(a.begin(),a.end());
    return b==a;
}
int main() {
	string n;
	cin>>n;
	if(is_pal(n)) cout << "Yes" << endl;
	else cout << "No" << endl;
    return 0;
}