#include<bits/stdc++.h>
using namespace std;
int i;
int main(){
	//freopen("b.in","r",stdin);
	//freopen("b.out","w",stdout);
	string a;
	cin >> a;
	reverse(a.begin(), a.end());
	while(a[i]==0){
		i++;
	}
	for(i;i<a.size();i++){
		cout<<a[i];
	}
	//fclose(stdin);fclose(stdout);
	return 0;
}