import sys
import math

def main():
    data = sys.stdin.read().split()
    n = int(data[0])
    xs = list(map(int, data[1:n+1]))
    sum_ = 0.0
    for x in xs:
        sum_ += math.sqrt(x)
        print("{0:.17f}".format(sum_))

if __name__ == "__main__":
    main()