#include <stdio.h>
double a,b,c;
int t,i,n;
int main()
{
  scanf("%d",&t);
  for (i=1;i<=t;i++)
  {
      scanf("%d",&n);
      c=(double)n;
      a=1+(c-2)*19/27;
      b= (46 - 38/c) / (19 - 11/c);
      printf("Case #%d:\n%.6lf %.6lf\n",i,a,b);
  }    
  return 0;
}