import bisect
import copy
import decimal
import fractions
import functools
import heapq
import itertools
import math
from operator import is_
import random
import sys
from collections import Counter,deque,defaultdict
from functools import lru_cache,reduce
from heapq import heappush,heappop,heapify,heappushpop,_heappop_max,_heapify_max
def _heappush_max(heap,item):
    heap.append(item)
    heapq._siftdown_max(heap, 0, len(heap)-1)
def _heappushpop_max(heap, item):
    if heap and item < heap[0]:
        item, heap[0] = heap[0], item
        heapq._siftup_max(heap, 0)
    return item
from math import gcd as GCD
read=sys.stdin.read
readline=sys.stdin.readline
readlines=sys.stdin.readlines

N=int(readline())
ans=0
decimal.getcontext().prec=20
for _ in range(N):
    x=int(readline())
    r=decimal.Decimal(math.sqrt(x))
    for i in range(30):
        r=(r**2+x)/(2*r)
    ans+=r
    print(ans)