import sys
from decimal import Decimal, getcontext

getcontext().prec = 30  # Set a high precision to handle all cases accurately

n = int(sys.stdin.readline())
sum_total = Decimal(0)
for _ in range(n):
    x = sys.stdin.readline().strip()
    xi = Decimal(x)
    sqrt_xi = xi.sqrt()
    sum_total += sqrt_xi
    # Format to 17 decimal places to meet the required precision
    print("{0:.17f}".format(sum_total))