from decimal import Decimal, getcontext

getcontext().prec = 30  # Set precision high enough to handle sqrt accurately

n = int(input())
sum_so_far = Decimal(0)

for _ in range(n):
    x = int(input())
    xi = Decimal(x)
    sqrt_x = xi.sqrt()
    sum_so_far += sqrt_x
    
    # Format the sum to have exactly 17 decimal places
    s = format(sum_so_far, 'f')  # Convert to fixed-point string
    if '.' in s:
        integer_part, fractional_part = s.split('.')
        fractional_part = fractional_part.ljust(17, '0')[:17]
    else:
        integer_part = s
        fractional_part = '0' * 17
    formatted = f"{integer_part}.{fractional_part}"
    print(formatted)