isX = [True, True, True, True, True, True, True, True, True, True]
N = int(input())
for i in range(N):
    a = input().split()
    for j in range(4):
        a[j] = int(a[j])
    if a[4] == "NO":
        for j in range(4):
            isX[a[j]] = False
    else:
        for j in range(10):
            if not (j == a[0] or j == a[1] or j == a[2] or j == a[3]):
                isX[j] = False
for i in range(10):
    if isX[i]:
        print(i)