[백준] 16956번 : 늑대와 양 - Kotlin(코틀린)

https://www.acmicpc.net/problem/16956

import java.util.*;

fun main(args: Array<String>) {
    val s=Scanner(System.`in`)
    var r=s.nextInt()
    var c=s.nextInt()
    
    var arr=Array(r){s.next().toCharArray()}
    
    var check: Boolean=true
    var dxy = arrayOf(arrayOf(0,1),arrayOf(0,-1),arrayOf(1,0),arrayOf(-1,0))
    
    for(i in 0 until r){
        for(j in 0 until c){
            if(arr[i][j]=='W'){
                for(k in 0 until 4){
                    var x=i+dxy[k][0]
                    var y=j+dxy[k][1]
                    
                    if(x>=0 && x<r && y>=0 && y<c){
                        if(arr[x][y]=='.'){
                            arr[x][y]='D'
                        }
                        else if(arr[x][y]=='S'){
                            check=false
                            println(0)
                            return
                        }
                    }
                }
            }
        }
    }
    if(!check) println(0)
    else{
        println(1)
        for(i in 0 until r){
            for(j in 0 until c){
                print(arr[i][j])
            }
            println()
        }
    }
}