Boxes AC O(n^6) code

Main.java

import java.io.*;
import java.util.*;

public class Main {
  public static PrintWriter out;
  public static void main(String[] args) {
    MyScanner sc = new MyScanner();
    out = new PrintWriter(new BufferedOutputStream(System.out));
    int[] boxes = new int[6];
    for (int i = 0; i < 6; i++)
      boxes[i] = sc.nextInt();
    int t1 = sc.nextInt();
    int t2 = sc.nextInt();
    Arrays.sort(boxes);

    for (int i = 0; i < 6; i++) {
      for (int j = 0; j < 6; j++) {
        if (boxes[j] > boxes[i] || i == j) continue;
        for (int k = 0; k < 6; k++) {
          if (boxes[k] > boxes[j] || k == j) continue;
          for (int l = 0; l < 6; l++) {
            for (int m = 0; m < 6; m++) {
              if (boxes[m] > boxes[l] || m == l) continue;
              for (int n = 0; n < 6; n++) {
                if (boxes[n] > boxes[m] || m == n) continue;
                if (boxes[i] + boxes[j] + boxes[k] == t1 &&
                    boxes[l] + boxes[m] + boxes[n] == t2)
                  System.out.println(boxes[i] + " " + boxes[j] + " " + boxes[k] + " " + boxes[l] + " " + boxes[m] + " " + boxes[n]);
              }
            }
          }
        }
      }
    }
    out.close();
  }


  public static class MyScanner {
    BufferedReader br;
    StringTokenizer st;

    public MyScanner() {
       br = new BufferedReader(new InputStreamReader(System.in));
    }
 
    public boolean hasNext() {
      try {
        boolean a = br.ready();
        return a;
      } catch (IOException e) {
        return false;
      }
    }

    public String next() {
      while (st == null || !st.hasMoreElements()) {
        try {
          st = new StringTokenizer(br.readLine());
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      return st.nextToken();
    }
 
    public int nextInt() {
      return Integer.parseInt(next());
    }
 
    public long nextLong() {
      return Long.parseLong(next());
    }

    public double nextDouble() {
      return Double.parseDouble(next());
    }

    public char nextChar() {
      return next().charAt(0);
    }

    public String nextLine() {
      String str = "";
      try {
         str = br.readLine();
      } catch (IOException e) {
         e.printStackTrace();
      }
      return str;
    }
  }
}