import sys
import numpy as np

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N = int(readline())
nums = np.array(read().split(), np.longdouble)
np.sqrt(nums, out=nums)
nums = nums.astype(np.longdouble)
np.cumsum(nums, out=nums)
nums = nums.astype(np.float64)

for k in range(18):
    i = np.searchsorted(nums, 10**k)
    j = np.searchsorted(nums, 10**(k+1))
    if i != j:
        A = np.round(nums[i:j], 16-k)
        print(*A, sep='\n')