# -*- coding: utf-8 -*- import sys from collections import defaultdict def input(): return sys.stdin.readline().strip() def list2d(a, b, c): return [[c] * b for i in range(a)] def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)] def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in range(b)] for i in range(a)] def ceil(x, y=1): return int(-(-x // y)) def INT(): return int(input()) def MAP(): return map(int, input().split()) def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)] def Yes(): print('Yes') def No(): print('No') def YES(): print('YES') def NO(): print('NO') sys.setrecursionlimit(10 ** 9) INF = 10 ** 18 MOD = 10 ** 9 + 7 N = INT() D = defaultdict(str) D[(2, 8)] = 'a' D[(3, 9)] = 'b' D[(7, 9)] = 'c' for i in range(N): x1, y1, x2, y2 = MAP() if (x1, y1) in D: D[(x2, y2)] = D[(x1, y1)] del D[(x1, y1)] if D[(5, 8)] == 'a' and D[(4, 8)] == 'b' and D[(6, 8)] == 'c': YES() else: NO()