[백준] 2163번 : 초콜릿 자르기 - Kotlin(코틀린)

https://www.acmicpc.net/problem/2163

import java.util.*
fun main(args: Array<String>) {
    val s=Scanner(System.`in`)
    var n=s.nextInt()
    var m=s.nextInt()
    print(n*m-1)
}