X = [[2, 8], [3, 9], [7, 9]]

N = int(input())

for i in range(N):
    x1, y1, x2, y2 = map(int, input().split())
    if [x1, y1] in X:
        X[X.index([x1, y1])] = [x2, y2]
if X == [[5, 8], [4, 8], [6, 8]]:
    print('YES')
else:
    print('NO')