def num_comm_div(x,y):
  def ngcd(x,y):
      i=1
      while(i<=x and i<=y):
          if(x%i==0 and y%i == 0):
              gcd=i;
          i+=1
      return gcd;
  
  n = ngcd(x,y)
  result = 0
  z = int(n**0.5)
  i = 1
  while(i <= z):
    if(n % i == 0):
      result += 2 
      if(i == n/i):
        result-=1
    i+=1
  return result
def min_cost(cost, m, n):
	R = 3
	C = 3
	 
	tc = [[0 for x in range(C)] for x in range(R)] 
	tc[0][0] = cost[0][0] 
	for i in range(1, m+1): 
		tc[i][0] = tc[i-1][0] + cost[i][0] 
	for j in range(1, n+1): 
		tc[0][j] = tc[0][j-1] + cost[0][j] 
	for i in range(1, m+1): 
		for j in range(1, n+1): 
			tc[i][j] = min(tc[i-1][j-1], tc[i-1][j], tc[i][j-1]) + cost[i][j] 
	return tc[m][n]