import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################

n = ni()
ax,ay = na()
bx,by = na()
cx,cy = na()

print(4)
for dx, dy in [(1, 0), (0, 1), (-1, 0), (0, -1)]:
    x, y = dx + cx, dy + cy
    print(x, y)