#include <iostream>;
#include <vector>;
#include <string>;
#include <sstream>;
#include <iomanip>
using namespace std;
int main()
{
    int temp;
    vector <double> answers;

    string s;
    getline(cin, s);

    istringstream iss(s);
    while (iss >> temp)
    {
        double a = sqrt(temp);
        answers.push_back(a);
    }

    for (int i = answers.size(); i > 0; i--)
    {
        cout << fixed << setprecision(4) << answers[i-1];
        cout << endl;
    }

    system("pause");

    return 0;
}