#include<stdio.h>
#include<math.h>
#define size 256*1024/sizeof(long long)
int main()
{
  int s=0,l;
  long long int a[size+1];
  do{l=scanf("%lld",a[s++]);}while(l!=EOF);
  for(s=s-2;s>=0;s--)
     printf("%.4Lf\n", sqrt((double)a[s]));

}

The input may contain upto 256 * 1024 / 2 numbers ("1 1 1 1 1 ...").