X, Y, N = map(int, input().split())
for n in range(N):
	u, v = map(int, input().split())
	if u == 0:
		u_s = 0
		u_a = 0
	else:
		u_s = (u - 1) % Y + 1
		u_a = (u - 1) // Y + 1
		
	if v == 0:
		v_s = 0
		v_a = 0
	else:
		v_s = (v - 1) % Y + 1
		v_a = (v - 1) // Y + 1
		
	if v_a == u_a:
		print(abs(v_s - u_s))
	else:
		print(v_s + u_s)