Tecla 2018 - Treino #H

x0, y0 = map(int,input().split())

x1, y1 = map(int,input().split())
x2, y2 = map(int,input().split())

contador = 0

if x1 > x2:
    if y1 > y2:

        if x0 > x2 and x0 < x1:
            if y0 > y2 and y0 < y1:
                contador += 1

    else:

        if x0 > x2 and x0 < x1:
            if y0 < y2 and y0 > y1:
                contador += 1

else:
    if y1 > y2:

        if x0 < x2 and x0 > x1:
            if y0 > y2 and y0 < y1:
                contador += 1

    else:

        if x0 < x2 and x0 > x1:
            if y0 < y2 and y0 > y1:
                contador += 1

print(contador)