N = int(input().strip())
k = [[2, 8], [3, 9], [7, 9]]

for _ in range(N):
  x1, y1, x2, y2 = [int(i) for i in input().strip().split(' ')]
  if [x1, y1] in k:
    k[k.index([x1, y1])] = [x2, y2]

print(['NO', 'YES'][k == [[5, 8], [4, 8], [6, 8]]])