int main()
{
	int a,b,c,d,e,i;
    cin>>i;
    if(i/10==0)
	{
		cout<<i<<endl;
	}
    if(i/100==0&&i/10!=0)
	{
            a=i/10;
            b=i-a*10;
	cout<<b<<a<<endl;
	}
    if(i/1000==0&&i/100!=0)
	{
            a=i/100;
	        b=(i-a*100)/10;
	        c=i-a*100-b*10;
			cout<<c<<b<<a<<endl;
	}
	if(i/10000==0&&i/1000!=0)
	{
            a=i/1000;
		    b=(i-a*1000)/100;
	        c=(i-a*1000-b*100)/10;
	        d=i-a*1000-b*100-c*10;
			cout<<d<<c<<b<<a<<endl;
	}
	if(i/10000!=0)
	{
      a=i/10000;
	  b=(i-a*10000)/1000;
	  c=(i-a*10000-b*1000)/100;
	  d=(i-a*10000-b*1000-c*100)/10;
	  e=i-a*10000-b*1000-c*100-d*10;
	  cout<<e<<d<<c<<b<<a<<endl;
	}
			return 0;
}