Bookshelves Problem Error on Some test Cases

I have implemented the Java code well and am getting correct outcomes on 33% of the test outcomes. On others I got WA (Wrong Answer)
Can someone please tell me what am I doing wrong.


class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] vals = br.readLine().split(" ");
        int n = Integer.parseInt(vals[0]);
        int k = Integer.parseInt(vals[1]);
        int[] list1 = new int[n];
        int[] list2 = new int[n];
        int[] maxlist = new int[n];
        int[] minlist = new int[n];
        for(int i = 2;i<n+2;i++){//Insertion Sort Shelf 1
            int key = Integer.parseInt(vals[i]);
            list1[i-2] = key;
            int j = i-1;
            while(j>=2 && list1[j-2]>key){
              list1[j+1-2] = list1[j-2];
              j--;
            }
            list1[j+1-2] = key;
        }
        for(int i = n+2;i<(n+n+2);i++){//Insertion Sort Shelf 2
            int key = Integer.parseInt(vals[i]);
            list2[i-(n+2)] = key;
            int j = i-1;
            while(j>=n+2 && list2[j-(n+2)]>key){
              list2[j+1-(n+2)] = list2[j-(n+2)];
              j--;
            }
            list2[j+1-(n+2)] = key;
        }
        String l1 = "";
        String l2 = "";
        for(int i = 1;i<n+1;i++){//I need to know which is a bigger list
            if(list1[n-1]>list2[n-1]){
                maxlist = list1;
                minlist = list2;
                break;
            }else if(list1[n-1]<list2[n-1]){
                maxlist = list2;
                minlist = list1;
                break;
            }else{
                if(i==n+1){//The lists are hell same
                    maxlist = list2;
                    minlist = list1;
                    break;
                }//Or just wait
            }
        }
        for(int i=0;i<k;i++){//Something really GREEDY
            int a = minlist[n-1];//7 Ignore
            int b = maxlist[0];//2 Ignore
            if(b<a){
                minlist[n-1] = b;
                maxlist[0] = a;
                Arrays.sort(minlist);
                Arrays.sort(maxlist);
            }
        }
        System.out.println(String.valueOf(minlist[n-1]+maxlist[n-1]));
    }

}


Any help is appreciated. Thanks in advance. Could not eradicate myself as I could not view the test inputs and other people’s codes.

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