Language: Java

import java.util.*;

public class Main {


    public static void main(String[] args)throws Exception
        Scanner sc = new Scanner(System.in);
        int n= sc.nextInt();
        int k = sc.nextInt();
        int[] candle = new int[n];
        for (int i = 0; i < n;i++)
            candle[i] = sc.nextInt();
        int index =0;
        for (; index < n;index++)
            if (candle[index]>= 0)
                break;
        int min =Integer.MAX_VALUE;
        if (index == n)
            return -candle[n-k];
        for(int i =0; i< k; i++){
            int l = abs(i,index-1,  candle, -1);
            int r = abs(k-i,index+1,  candle, 1);
            if(r==0 || l == 0)
                min = Math.min(min, Math.max(l,r));
            else {
                int t = l< r + candle[index]? l*2 + r : l+ r*2;
                min = Math.min(min, t);
            }

        }
        return min;

    }

    public static int abs(int left, int index, int[] candle, int dir){
        if (index < 0 || index >= candle.length)
            return 0;
        if (left== 0)
            return 0;
        if (left == 1)
            return Math.abs(candle[index]);
        if (dir< 0){
            return abs(left-1, index-1, candle,dir);
        }
        else{
            return abs(left-1, index+1, candle,dir);
        }
    }
}

Compiler output:
Main.java:6: error: ';' expected
    public static void main(String[] args)throws Exception
                                                          ^
Main.java:11: error: illegal start of type
        for (int i = 0; i < n;i++)
        ^
Main.java:11: error: > or ',' expected
        for (int i = 0; i < n;i++)
                             ^
Main.java:11: error: <identifier> expected
        for (int i = 0; i < n;i++)
                               ^
Main.java:12: error: ']' expected
            candle[i] = sc.nextInt();
                   ^
Main.java:12: error: ';' expected
            candle[i] = sc.nextInt();
                    ^
Main.java:12: error: <identifier> expected
            candle[i] = sc.nextInt();
                                  ^
Main.java:14: error: illegal start of type
        for (; index < n;index++)
        ^
Main.java:14: error: > or ',' expected
        for (; index < n;index++)
                        ^
Main.java:14: error: <identifier> expected
        for (; index < n;index++)
                              ^
Main.java:15: error: ']' expected
            if (candle[index]>= 0)
                       ^
Main.java:15: error: ';' expected
            if (candle[index]>= 0)
                            ^
Main.java:18: error: illegal start of type
        if (index == n)
        ^
Main.java:18: error: <identifier> expected
        if (index == n)
                 ^
Main.java:18: error: <identifier> expected
        if (index == n)
                      ^
Main.java:19: error: ']' expected
            return -candle[n-k];
                           ^
Main.java:19: error: ';' expected
            return -candle[n-k];
                            ^
Main.java:19: error: <identifier> expected
            return -candle[n-k];
                              ^
Main.java:20: error: illegal start of type
        for(int i =0; i< k; i++){
        ^
Main.java:20: error: > or ',' expected
        for(int i =0; i< k; i++){
                          ^
Main.java:20: error: <identifier> expected
        for(int i =0; i< k; i++){
                             ^
Main.java:31: error: illegal start of type
        return min;
        ^
Main.java:31: error: <identifier> expected
        return min;
                  ^
Main.java:35: error: unnamed classes are a preview feature and are disabled by default.
    public static int abs(int left, int index, int[] candle, int dir){
                  ^
  (use --enable-preview to enable unnamed classes)
Main.java:49: error: class, interface, enum, or record expected
}
^
25 errors