import sys
from decimal import Decimal, getcontext

getcontext().prec = 35  # Set sufficient precision to handle all required digits

def main():
    input = sys.stdin.read().split()
    n = int(input[0])
    x_list = input[1:n+1]
    
    sum_total = Decimal(0)
    for x_str in x_list:
        xi = Decimal(x_str)
        sqrt_xi = xi.sqrt()
        sum_total += sqrt_xi
        # Format to 17 decimal places
        print("{0:.17f}".format(sum_total))
        
if __name__ == "__main__":
    main()