n = int(input())
num_flag = [True] * 10
for i in range(n):
    a = list(map(str,input().split()))
    if a[4] == "NO":
        for j in range(4):
            num_flag[int(a[j])] = False
    else:
        ten = [j for j in range(10)]
        for j in range(4):
            ten.remove(int(a[j]))
        for j in ten:
            num_flag[j] = False
for i in range(10):
    if num_flag[i]:
        print(i)