#include<iostream>
#include <iomanip>
#include<cmath>
using namespace std;
int main()
{
    typedef double real;
    int N;
    cin >> N;
    real ans = 0;
    cout << fixed << setprecision(17);
    for (auto i=0; i<N; ++i) {
        long long int x;
        cin >> x;
        ans += sqrt(real(x));
        cout << ans << endl;
    }
    return 0;
}