a = (2, 8)
b = (3, 9)
c = (7, 9)
n = int(input())
for i in range(n):
    x0, y0, x1, y1 = map(int, input().split())
    if (x0, y0) == a:
        a = (x1, y1)
    elif (x0, y0) == b:
        b = (x1, y1)
    elif (x0, y0) == c:
        c = (x1, y1)
if a == (5, 8) and b == (4, 8) and c == (6, 8):
    print("YES")
else:
    print("NO")