As Uwi's recommendation to create my own libary, so i create an IntelliJ File Template in kotlin for faster solve competitive programming problem. This use the fastest I/O that we can achieve in kotlin.

CompetitiveProgrammingKotlin.kt

import java.io.PrintWriter
import java.math.BigInteger

/**
 * ${Website}
 * Created on ${DAY} ${MONTH_NAME_FULL} ${YEAR}
 * @author ${USER}
 */
 
fun main(args: Array<String>) {
    ${NAME}()
} 
 
@Suppress("ClassName", "unused")
private class ${NAME} {

    private val fastOutput by lazy {
        PrintWriter(System.out)
    }

    init {
        var t = nextInt()
        while (t-- > 0) {
            // TODO please do your logic here
        }
        fastOutput.close()
    }

    private fun print(o: Any) {
        fastOutput.print(o)
    }

    private fun println(o: Any) {
        fastOutput.println(o)
    }

    private fun nextBigInteger(): BigInteger {
        return BigInteger(nextString())
    }
    
    private fun nextCharArray(): CharArray {
        return nextString().toCharArray()
    }

    private fun nextDouble(): Double {
        return nextString().toDouble()
    }

    private fun nextFloat(): Float {
        return nextString().toFloat()
    }

    private fun nextInt(): Int {
        return nextString().toInt()
    }

    private fun nextIntList(): List<Int> {
        return nextString().split(" ").map { it.toInt() }
    }

    private fun nextIntMutableList(): MutableList<Int> {
        return nextIntList().toMutableList()
    }

    private fun nextLong(): Long {
        return nextString().toLong()
    }

    private fun nextString(): String {
        return readLine()!!
    }
}