import sys import math def main(): input = sys.stdin.read().split() n = int(input[0]) xs = list(map(int, input[1:n+1])) sum_total = 0.0 res = [] for x in xs: sum_total += math.sqrt(x) res.append("{0:.17f}".format(sum_total)) print('\n'.join(res)) if __name__ == "__main__": main()