def plusMinus(arr):
    # Write your code here
    total = len(arr)

    positives = len([v for v in arr if v > 0]) / total
    negatives = len([v for v in arr if v < 0]) / total
    zeros = len([v for v in arr if v == 0]) / total
    
    def print_r(val: float):
        print(f"{round(val, 6)}")
    
    print_r(positives)
    print_r(negatives)
    print_r(zeros)