# include <bits/stdc++.h>
using namespace std;

struct Setup_io {
   Setup_io() {
      ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
      cout << fixed << setprecision(15);
   }
} setup_io;

int main() {
   int n;
   cin >> n;
   long double acc = 0.0;
   for (int i = 0; i < n; i++) {
      long x;
      cin >> x;
      acc += sqrtl(x);
      cout << fixed << setprecision(16) << acc << endl;
   }
}