#include<iostream>
#include<stdio.h>
int main()
{
	y=x/100;z=x/10-y*10;b=x/1-y*100-z*10;
	n=x/0.1-y*1000-z*100-b*10;
	printf("%d",n);
	printf(".");
	printf("%d%d%d",b,z,y);
	return 0;
}