#include<stdio.h>
int main()
{
	int n,i,t;
	while(scanf("%d",&n)!=EOF)
  {
	t=0;
	while(n)
	{
		i=n%10;
		t=t*10+i;
		n/=10;
		if(n<=0)
		break;
	}
	printf("%d\n",t)
}
    
    return 0;
}