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

/**
 * Problem CF1396A
 */
@SuppressWarnings("unchecked")
public class CF1396A {

    static class Task extends IOHandler {
        public void run() {
            int n = in.nextInt();
            long a[] = in.nextLongs(n);
            if(n == 1) {
                out.println("1 1");
                out.println(-a[0]);
                out.println("1 1");
                out.println(0);
                out.println("1 1");
                out.println(0);
            } else {
                out.println("%s %s", 1, n-1);
                for(int i = 0; i < n-1; ++i){
                    long x = a[i]%n;
                    out.print("%s ",  x*(n-1));
                    a[i]+=x*(n-1);
                }
                out.println();
                out.println("%s %s", n, n);
                out.println("%s", n-(a[n-1]%n));
                a[n-1]+=n-(a[n-1]%n);
                out.println("%s %s", 1, n);
                for(int i = 0; i < n; ++i){
                    out.print("%s ", -a[i]);
                }
                out.println();
            }
        }
    }

    /***********************************************************
     *                        COMMONS                          *
     ***********************************************************/
    static class Pair<A, B> implements Comparable<Pair<A, B>> {
        public A a;
        public B b;
        public Pair(Pair<A, B> p) {
            this(p.a, p.b);
        }

        public Pair(A a, B b) {
            this.a = a;
            this.b = b;
        }

        public String toString() {
            return a+" "+b;
        }

        public int hashCode() {
            return Objects.hash(a, b);
        }

        public boolean equals(Object o) {
            if(o instanceof Pair) {
                Pair<A,B> p = (Pair<A,B>) o;
                return a.equals(p.a)&&b.equals(p.b);
            }
            return false;
        }

        @Override
        public int compareTo(Pair<A, B> p) {
            int cmp = ((Comparable<A>) a).compareTo(p.a);
            if(cmp==0) {
                return ((Comparable<B>) b).compareTo(p.b);
            }
            return cmp;
        }
    }

    /***********************************************************
     *                      BOILERPLATE                        *
     ***********************************************************/
    public static void main(String[] args) {
        Task task = new Task();
        task.run();
        task.cleanup();
    }

    static class IOHandler {
        public InputReader in = new InputReader(System.in);
        public OutputWriter out = new OutputWriter(System.out);

        public void cleanup() {
            out.close();
        }
    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

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

        public int[] nextInts(int n) {
            int a[] = new int[n];
            for(int i = 0; i < n; ++i)
                a[i] = nextInt();
            return a;
        }

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

        public long[] nextLongs(int n) {
            long a[] = new long[n];
            for(int i = 0; i < n; ++i)
                a[i] = nextLong();
            return a;
        }
    }

    static class OutputWriter extends PrintWriter {
        public OutputWriter(OutputStream out) {
            super(out);
        }

        public void println(String format, Object... args) {
            this.println(String.format(format, args));
        }

        public void print(String format, Object... args) {
            this.print(String.format(format, args));
        }
    }

}