import sys
from decimal import Decimal, getcontext

getcontext().prec = 35  # Set precision high enough to handle up to 1e6 terms with 1e-15 error

def main():
    N = int(sys.stdin.readline())
    x_list = []
    for _ in range(N):
        x = int(sys.stdin.readline())
        x_list.append(Decimal(x))
    
    prefix_sums = []
    current_sum = Decimal(0)
    for xi in x_list:
        current_sum += xi.sqrt()
        prefix_sums.append(current_sum)
    
    # Printing each sum with 17 decimal places
    for s in prefix_sums:
        print("{0:.17f}".format(s))

if __name__ == "__main__":
    main()