#include <stdio.h>

int main()
{
	float x,y;
	int a,b,c,d;
	scanf("%f",&x);
	a=x/100;
	b=(x-100*a)/10;
	c=(x-100*a-10*b)/1;
	d=(x-100*a-10*b-c)/0.1;
	y=100*d+10*c+b+0.1*a;

	printf("%5.1f\n",y);
	
	return 0;
	
}