def plusMinus(arr):
    # Write your code here
    plus=0
    minus=0
    zero=0
    
    for i in arr:
        if i>0:
            plus+=1
        elif i<0:
            minus+=1
        else:
            zero+=1
    print(round(plus/len(arr),6))
    print(round(minus/len(arr),6))
    print(round(zero/len(arr),6))