import sys
import math

def main():
    data = sys.stdin.read().split()
    N = int(data[0])
    xs = list(map(int, data[1:N+1]))
    
    sum_so_far = 0.0
    output = []
    for x in xs:
        sum_so_far += math.sqrt(x)
        s = "{0:.15f}".format(sum_so_far)
        if '.' in s:
            s = s.rstrip('0').rstrip('.')
        output.append(s)
    
    print('\n'.join(output))
    
if __name__ == "__main__":
    main()