#include<iostream>
#include<vector>
#include<iomanip>

using namespace std;

void main()
{
    vector<double> br;
    double n;
    char c;
    while( (c=getchar()) != '\n')
    {
        cin >> n;
        br.insert(br.begin(), sqrt(n));
    }
    for(int i = 0; i < br.size(); i++)
        cout << fixed << setprecision(4) << br[i] << endl;


}