import sys
from decimal import Decimal, getcontext

def main():
    input = sys.stdin.read().split()
    N = int(input[0])
    xs = input[1:N+1]

    getcontext().prec = 25  # Set high precision to handle sum accurately

    sum_s = Decimal(0)
    output = []

    for x_str in xs:
        x = Decimal(x_str)
        sqrt_x = x.sqrt()
        sum_s += sqrt_x
        # Format the sum to exactly 15 decimal places
        formatted = format(sum_s, '.15f')
        output.append(formatted)

    # Print all lines at once for efficiency
    print('\n'.join(output))

if __name__ == "__main__":
    main()