#include<stdio.h>
int main()
{
	int a,b,c,d;
	scanf("%d",&a);
	b=a/10;
	c=a%10;
	if(c==0) d=b;
	else d=c*10+b;
	printf("%d",d);
	return 0;
}
/**************************************************************
	Problem: 1606
	User: admin
	Language: C
	Result: Accepted
	Time:9 ms
	Memory:1144 kb
****************************************************************/