#include <stdio.h>


int main()
{
    int a,b,c,d;
    float x;
    scanf("%f",&x);
    a=x/100;
	;b=(x-a*100)/10;
    ;c=(x-a*100-b*10)/1;
    ;d=(x-a*100-b*10-c)*10;
	printf("%.3f",1*d+0.1*c+0.01*b+0.001*a);
    return 0;
}