Problem: You are given an array a of n integers.

You want to make all elements of a equal to zero by doing the following operation exactly three times:

  * Select a segment, for each number in this segment we can add a multiple of len to it, where len is the length of this segment (added integers can be different). 



It can be proven that it is always possible to make all elements of a equal to zero.

Input

The first line contains one integer n (1 ≤ n ≤ 100 000): the number of elements of the array.

The second line contains n elements of an array a separated by spaces: a_1, a_2, ..., a_n (-10^9 ≤ a_i ≤ 10^9).

Output

The output should contain six lines representing three operations.

For each operation, print two lines:

  * The first line contains two integers l, r (1 ≤ l ≤ r ≤ n): the bounds of the selected segment.

  * The second line contains r-l+1 integers b_l, b_{l+1}, ..., b_r (-10^{18} ≤ b_i ≤ 10^{18}): the numbers to add to a_l, a_{l+1}, …, a_r, respectively; b_i should be divisible by r - l + 1.

Example

Input


4
1 3 2 4


Output


1 1 
-1
3 4
4 2
2 4
-3 -6 -6

Solution (in JAVA):

Solution:
//package codeforces.D666;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.StringTokenizer;

/**
 * @author muhossain
 * @since 2020-08-14
 */

public class C {

    public static void main(String[] args) {
        FastReader fs = new FastReader();

        int n = fs.nextInt();
        int[] nums = new int[n + 1];

        for (int i = 0; i < n; i++) {
            nums[i] = fs.nextInt();
        }

        StringBuilder output = new StringBuilder();

        output.append(1).append(" ").append(n).append("\n");

        for (int i = 0; i < n; i++) {
            output.append(BigInteger.valueOf(-1).multiply(BigInteger.valueOf(nums[i]).multiply(BigInteger.valueOf(n))));

            if (i != n - 1) {
                output.append(" ");
            }
        }

        output.append("\n");

        if (n == 1) {
            output.append(1).append(" ").append(1).append("\n");
            output.append(0).append("\n");

            output.append(1).append(" ").append(1).append("\n");
            output.append(0);
        } else {
            output.append(1).append(" ").append(n - 1).append("\n");

            for (int i = 0; i < n - 1; i++) {
                output.append(BigInteger.valueOf(nums[i]).multiply(BigInteger.valueOf(n - 1)));

                if (i != n - 2) {
                    output.append(" ");
                }
            }

            output.append("\n");
            output.append(n).append(" ").append(n).append("\n");
            output.append(BigInteger.valueOf(nums[n - 1]).multiply(BigInteger.valueOf(n - 1)));
        }


        System.out.println(output);
    }


    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        public static FastReader getFileReader(String fileName) throws FileNotFoundException {
            return new FastReader(new InputStreamReader(new FileInputStream(new File(fileName))));
        }

        public static FastReader getDefaultReader() throws FileNotFoundException {
            return new FastReader();
        }

        public FastReader(InputStreamReader inputStreamReader) {
            br = new BufferedReader(inputStreamReader);
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

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

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