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#include <iostream>
#include <vector>
#include <fstream>
#include <algorithm>
#include <math.h>

using namespace std;

int main() {
    double x;
    vector<double> tmp;
    while (cin >> x) {
        tmp.push_back(x);
    }
    reverse(tmp.begin(), tmp.end());
    cout.precision(4);
    for (auto x: tmp) {
        cout << sqrt(x) << "\n";
    }
    return 0;
}