#include <iostream>
#include <vector>
#include <cmath>

using namespace std;

int main()
{
    double n;
    vector<double> v;


    int a = 1;
    while (a==1)
    {
        cin >> n;
        v.push_back(n);
        if (cin.peek() == '\n')
            a = 0;
    }

    for (int i = 0; i <= v.size() - 1; i++)
    {
        //cout << sqrt(v[v.size() - 1 - i]) << endl;
        printf("%.4f\n", sqrt(v[v.size() - 1 - i]));


    }

    cout << endl;

}