def oi(): return int(input())
def os(): return input().rstrip()
def mi(): return list(map(int, input().split()))

# import sys
# input = sys.stdin.readline
# import sys
# sys.setrecursionlimit(10**8)
# import pypyjit
# pypyjit.set_param('max_unroll_recursion=-1')
input_count = 0
N = oi()
Ax,Ay = mi()
Bx,By = mi()
Cx,Cy = mi()
print(4)
# 4近傍
d = [(0,1), (0,-1), (1,0), (-1, 0)]

for dy,dx in d:
    print(*[Cx+dx,Cy+dy])