#include <iostream>
#include <math.h>
using namespace std;
int main()
{

long long int a[200],n;

freopen("input.txt","rt",stdin);
freopen("output.txt","wt",stdout);

int i=0;
while(!feof(stdin))
{
  i++;
  cin>>a[i];
}

for(int j=1;j<=i;j++)
printf("%.4f\n",sqrt(a[i-j+1]+0.0));
return 0;
}