import sys
from decimal import Decimal, getcontext

getcontext().prec = 30  # Set sufficient precision for calculations

def main():
    data = sys.stdin.read().split()
    n = int(data[0])
    xs = list(map(int, data[1:n+1]))
    
    sum_total = Decimal(0)
    for x in xs:
        sum_total += Decimal(x).sqrt()
        # Format the output to 17 decimal places
        print("{0:.17f}".format(sum_total))
            
if __name__ == "__main__":
    main()