#include<iostream>
using namespace std;
int main()
{
	int n,a;
	cin>>n;
	if(n<0)
	{
		cout<<"-";
		n=n*-1;
	}
	while(1)
	{
		a=n%10;
		if(a!=0)
			break;
		n=n/10;
	}
	while(n>0)
	{
		a=n%10;
		cout<<a;
		n=n/10;
	}
	return 0;
}