void main()
{
	int m,n,a,b,c,d,e;
	scanf("%d",&m);
	if(m%10==m)
	{	printf("%d",m);}
	else if(m%100==m)
	{
		a=m/10;
	b=m-10*a;
	n=10*b+a;
	printf("%d",n);}
	else if(m%1000==m)
	{
		a=m/100;
	b=(m-100*a)/10;
	c=m-100*a-10*b;
	n=100*c+10*b+a;
	printf("%d",n);
	}
	else if(m%10000==m)
	{
		a=m/1000;
	b=(m-1000*a)/100;
	c=(m-1000*a-100*b)/10;
	d=m-1000*a-100*b-10*c;
	n=1000*d+100*c+10*b+a;
	printf("%d",n);
	}
	else if(m%100000==m)
	{
		a=m/10000;
	b=(m-a*10000)/1000;
	c=(m-a*10000-b*1000)/100;
	d=(m-a*10000-b*1000-c*100)/10;
	e=m-a*10000-b*1000-c*100-d*10;
	n=e*10000+d*1000+c*100+b*10+a;
	printf("%d",n);
	}
}