N = int(input())
XYXY = [list(map(int, input().split())) for _ in range(N)]
D = dict()
D[(2, 8)] = 'A'
D[(3, 9)] = 'B'
D[(7, 9)] = 'C'
for X1, Y1, X2, Y2 in XYXY:
    if (X1, Y1) in D:
        D[(X2, Y2)] = D[(X1, Y1)]
        D[(X1, Y1)] = ''
if (5, 8) not in D or (4, 8) not in D or (6, 8) not in D:
    print("NO")
elif D[(5, 8)] == 'A' and D[(4, 8)] == 'B' and D[(6, 8)] == 'C':
    print("YES")
else:
    print("NO")