Timus_1001

//Timus 1001
#include <math.h>
#include <iostream>
#include <iomanip>
#define SIZE 128*1024
long long int num[SIZE];
using namespace std;
int main()
{
    int n=0;
    long long int cislo;
    while (cin >> cislo)
    {
        num[n] = cislo;
        n++;
    }
    for(int i=n-1;i>=0;i--)
    {
        cout << fixed << setprecision(4) << (double)sqrt(num[i]) << endl;
    }
    return 0;
}