const val NO = "NO"

fun main(args: Array<String>) {
    val turns = readLine()!!.toInt()
    var remains = (1..9).toSet()

    for (i in 1..turns) {
        val line = readLine()!!.split(" ")
        val nums = line.take(4).map(String::toInt)
        
        if (line.last() == NO) {
            remains -= nums
        } else {
            remains = remains.intersect(nums)
        }
        if (remains.size == 1) {
            remains.forEach(::println)
            return
        }
    }
}