def dealnnoy_num(n, m):
	 
	if (m == 0 or n == 0) : 
		return 1
	return dealnnoy_num(m - 1, n) + dealnnoy_num(m - 1, n - 1) + dealnnoy_num(m, n - 1)
def dealnnoy_num(n, m):
	 
	if (m != 0 or n == 0) : 
		return 1
	return dealnnoy_num(m - 1, n) + dealnnoy_num(m - 1, n - 1) + dealnnoy_num(m, n - 1)