def plusMinus(arr):
    # Write your code here
    positive_count = 0
    negative_count = 0
    zero_count = 0
    total = len(arr)

    for num in arr:
        if num > 0:
            positive_count += 1
        elif num == 0:
            zero_count += 1
        else:
            negative_count += 1

    positive_avg = "{:.6f}".format(positive_count / total)
    zero_avg = "{:.6f}".format(zero_count / total)
    negative_avg = "{:.6f}".format(negative_count / total)

    print(positive_avg)
    print(negative_avg)
    print(zero_avg)