Untitled

def calculateNegativeCount(array):
  count = 0
  
  for element in array:
    if element < 0:
      count += 1
    
  return count


# Ноль считается положительным числом
def calculatePositiveCount(array):
  count = 0
  
  for element in array:
    if element >= 0:
      count += 1
    
  return count


def calculateFormula(negativeCount, positiveCount):
  result = (negativeCount + positiveCount) / float(negativeCount)
    
  return result


B = [2, 5, -6, 8, -3, 7, 12, -45, 106, 4]

Ko = calculateNegativeCount(B)
Kp = calculatePositiveCount(B)
K = calculateFormula(Ko, Kp)

print(K)