import numpy as np

def AND(x1, x2):
	x = np.array([x1,x2])
	w = np.array([0.5,0.5])
	b = 0.7
	tmp = np.sum(w*x) - b
	if tmp <= 0:
		return	0
	return	1

print(AND(0,0))
print(AND(1,0))
print(AND(0,1))
print(AND(1,1))
