#include<fstream>
#include<string>
using namespace std;
ifstream cin("reverse.in");
ofstream cout("reverse.out");
string num;
int main()
{
	bool judge=false;
	char cr;
	num="";
	cin>>cr;
	if(cr=='-')
	{
		cin>>num;
	}
	else
	{
		judge=true;
		string last;
		cin>>last;
		if(last.empty())
		{
			cout<<'0';
			goto poi;
		}
		num+=cr;
		num+=last;
	}
	if(!judge)
	{
		cout<<'-';
		int i;
		for(i=num.length()-1;i>=0;i--)
		{
			if(num[i]!='0')
			{
				break;
			}
		}
		for(int k=i;k>=0;k--)
		{
			cout<<num[k];
		}
	}
	else
	{
		int i;
		for(i=num.length()-1;i>=0;i--)
		{
			if(num[i]!='0')
			{
				break;
			}
		}
		for(int k=i;k>=0;k--)
		{
			cout<<num[k];
		}
	}
	poi:
	cin.close();
	cout.close();
	return 0;
}