import sys
from decimal import Decimal, getcontext

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

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

    sum_so_far = Decimal(0)
    output = []
    for x_str in xs:
        x = Decimal(x_str)
        sqrt_x = x.sqrt()
        sum_so_far += sqrt_x
        # Format to 17 decimal places, ensuring no scientific notation
        formatted = format(sum_so_far, '.17f')
        output.append(formatted)
    
    print('\n'.join(output))

if __name__ == "__main__":
    main()