import math
import sys

def main():
    data = sys.stdin.read().split()
    n = int(data[0])
    xs = list(map(int, data[1:n+1]))
    sum_total = 0.0
    out = []
    for x in xs:
        sum_total += math.sqrt(x)
        out.append("{0:.17f}\n".format(sum_total))
    sys.stdout.write(''.join(out))

if __name__ == '__main__':
    main()