PQ도 자신에 입맛에맞게 순서를 지정가능

import java.io.BufferedReader
import java.io.BufferedWriter
import java.io.InputStreamReader
import java.io.OutputStreamWriter
import java.util.*

val br = BufferedReader(InputStreamReader(System.`in`))
fun main()=with(br){
val bw = BufferedWriter(OutputStreamWriter(System.out))
val q11 = PriorityQueue<Pair<Int,Int>>()
var q22 = PriorityQueue<Pair<Int, Int>> { o1, o2 ->
if (o1.first == o2.first) o1.second - o2.second
else o1.first - o2.first
}
q22.add(Pair(1,2))
q22.add(Pair(4,3))
q22.add(Pair(7,3))
q22.add(Pair(1,22))
q22.add(Pair(5,1))
println(q11)
println(q22)
while(!q22.isEmpty()){
println(q22.poll())
}
bw.flush()
bw.close()
}