#include<bits/stdc++.h>
using namespace std;
bool hw(string s){
	bool r=true;
	for(int i=0;i<=(s.size()-1)/2;i++){
		if(s[i]!=s[s.size()-1-i]){
			r=false;
			break;
		}
	}
	return r;
}
int main(){
    string s;
    cin>>s;
    cout<<hw(s);
	return 0;
}

/**************************************************************
	Problem: 1134
	User: chenlingxuan
	Language: C++
	Result: Wrong Answer
****************************************************************/