y1,y2,n=set(),set(),set()
ans=set(*['0123456789'])
for _ in range(int(input())):
    a,b,c,d,e=input().split()
    if e=='YES':
        if y1:
            for i in [a,b,c,d]:
                y2.add(i)
            y1&=y2
        else:
            for i in [a,b,c,d]:
                y1.add(i)
    else:
        for i in [a,b,c,d]:
            n.add(i)
print(*y1-n if y1 else ans^n)