n=read_line.to_i
yes=(0..9).map{|i|i}
no=[] of Int32
n.times{
    a,b,c,d,r=read_line.split
    p=[a,b,c,d].map(&.to_i)
    if r=="YES"
        yes=yes&p
    else
        no=no+p
    end
}
yes.each{|i|puts i unless no.includes?(i)}