Aita

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner lukija = new Scanner(System.in);

        int lautoja = lukija.nextInt();
        int ero = lukija.nextInt();
        int[] laudat = new int[lautoja + 1];
        int[] luvut = new int[lautoja + 1];

        for (int i = 1; i <= lautoja; i++) {
            luvut[i] = i;
        }

        int mediaani = (lautoja + 1) / 2;
        boolean ok = true;
        int indeksi = 0;
        int nykyinen = mediaani;

        while (ok && indeksi <= lautoja) {
            if (indeksi > 0 && Math.abs(laudat[indeksi - 1] - luvut[nykyinen]) < ero) {
                ok = false;
            }
            
            laudat[indeksi++] = luvut[nykyinen];
            luvut[nykyinen] = 0;
            nykyinen -= ero;
            
            if (nykyinen < 1) {
                nykyinen = lautoja;
            }
            
            while (nykyinen > 0 && luvut[nykyinen] == 0) {
                nykyinen--;
            }
        }

        if (ok) {
            for (int i = 0; i < lautoja; i++) {
                System.out.print(laudat[i] + " ");
            }
        } else {
            System.out.print("QAQ");
        }
        System.out.println("");
    }
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED