N = int(input())
A = [2, 8]
B = [3, 9]
C = [7, 9]
for i in range(N):
    x1, y1, x2, y2 = map(int, input().split())
    if [x1, y1] == A:
        A = [x2, y2]
    if [x1, y1] == B:
        B = [x2, y2]
    if [x1, y1] == C:
        C = [x2, y2]
if A == [5, 8] and B == [4, 8] and C == [6, 8]:
    print("YES")
else:
    print("NO")