import sys
from decimal import Decimal, getcontext

getcontext().prec = 35  # Sufficient precision to handle up to 1e6 terms

def main():
    data = sys.stdin.read().split()
    n = int(data[0])
    xs = data[1:n+1]
    sum_total = Decimal(0)
    for x_str in xs:
        x = Decimal(x_str)
        sqrt_x = x.sqrt()
        sum_total += sqrt_x
        # Format to 17 decimal places using f to ensure trailing zeros are included
        print("{0:.17f}".format(sum_total))

if __name__ == "__main__":
    main()