def plusMinus(arr): pos_num = 0 neg_num = 0 zeroes = 0 for i in arr:

    if i < 0:
        neg_num+=1
    elif i > 0:

        pos_num+=1
        # print(i)
    elif  i == 0:
        zeroes+=1
    else:
        return None
value1 =pos_num/len(arr)
value2 =neg_num/len(arr)
value3 =zeroes/len(arr)
print(f"{value1:.6f}")
print(f"{value2:.6f}")
print(f"{value3:.6f}")