#include <iostream>

using namespace std;

#include <boost/multiprecision/cpp_dec_float.hpp>
using namespace boost::multiprecision;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout << fixed << setprecision(17);
  int n;
  cin >> n;
  number<cpp_dec_float<128>> ans = 0;
  while (n--) {
    number<cpp_dec_float<128>> x;
    cin >> x;
    ans += sqrt(x);
    cout << ans << '\n';
  }
  return 0;
}