#include <bits/stdc++.h>

using namespace std;

const int cm = 1 << 17;
char cn[cm], *ci = cn + cm, ct;

inline char getcha() {
  if (ci - cn == cm) {
    fread(cn, 1, cm, stdin);
    ci = cn;
  }
  return *ci++;
}

inline int getint() {
  int A = 0;
  if (ci - cn + 16 > cm) {
    while ((ct = getcha()) >= '0') {
      A = A * 10 + ct - '0';
    }
  } else {
    while ((ct = *ci++) >= '0') {
      A = A * 10 + ct - '0';
    }
  }
  return A;
}

int main() {
  int n = getint();
  long double ans = 0;
  while (n--) {
    int x = getint();
    ans += sqrt((long double)x);
    puts(to_string(ans).c_str());
  }
  return 0;
}