p=[[y*10+x for x in range(10)] for y in range(10)]
N=int(input())
for i in range(N):
    ya,xa,yb,xb=map(int,input().split())
    p[yb][xb],p[ya][xa]=p[ya][xa],0
if p[4][8]==39 and p[5][8]==28 and p[6][8]==79:
        print("YES")
else:   print("NO")