import math
import sys

def main():
    data = sys.stdin.read().split()
    N = int(data[0])
    xs = list(map(int, data[1:N+1]))
    current_sum = 0.0
    for x in xs:
        current_sum += math.sqrt(x)
        print("{0:.16f}".format(current_sum))
        
if __name__ == "__main__":
    main()