Problem:
Score : 400 points

Problem Statement

#nck {
width: 30px;
height: auto;
}

You are given a permutation p of the set {1, 2, ..., N}. Please construct two sequences of positive integers a_1, a_2, ..., a_N and b_1, b_2, ..., b_N satisfying the following conditions:

1 \leq a_i, b_i \leq 10^9 for all i

a_1 < a_2 < ... < a_N

b_1 > b_2 > ... > b_N

a_{p_1}+b_{p_1} < a_{p_2}+b_{p_2} < ... < a_{p_N}+b_{p_N}

Constraints

2 \leq N \leq 20,000

p is a permutation of the set {1, 2, ..., N}

Input

The input is given from Standard Input in the following format:

N
p_1 p_2 ... p_N

Output

The output consists of two lines. The first line contains a_1, a_2, ..., a_N seperated by a space. The second line contains b_1, b_2, ..., b_N seperated by a space.

It can be shown that there always exists a solution for any input satisfying the constraints.

Sample Input 1

2
1 2

Sample Output 1

1 4
5 4

a_1 + b_1 = 6 and a_2 + b_2 = 8. So this output satisfies all conditions.

Sample Input 2

3
3 2 1

Sample Output 2

1 2 3
5 3 1

Sample Input 3

3
2 3 1

Sample Output 3

5 10 100
100 10 1

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskB {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int N = in.nextInt();
            int P[] = new int[N];
            for (int i = 0; i < N; i++) {
                P[i] = in.nextInt() - 1;
            }

            int SUM[] = new int[N];

            int A[] = new int[N];
            int B[] = new int[N];

            int MIDDLE = 100000000;

            int Q[] = new int[N];

            for (int i = 0; i < N; i++) {
                Q[P[i]] = i;
            }

            A[0] = 1;
            B[0] = MIDDLE;

            SUM[Q[0]] = A[0] + B[0];

            for (int i = Q[0] - 1; i >= 0; i--) SUM[i] = SUM[i + 1] - 1;
            for (int i = Q[0] + 1; i < N; i++) SUM[i] = SUM[i - 1] + 1;

            for (int i = 1; i < N; i++) {
                if (SUM[Q[i]] < SUM[Q[i - 1]]) {
                    A[i] = A[i - 1] + 1;
                    B[i] = SUM[Q[i]] - A[i];
                } else {
                    B[i] = B[i - 1] - 1;
                    A[i] = SUM[Q[i]] - B[i];
                }
            }

            for (int i = 0; i < N; i++) {
                out.print(A[i] + " ");
            }
            out.println();
            for (int i = 0; i < N; i++) {
                out.print(B[i] + " ");
            }
            out.println();
        }

    }

    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());
        }

    }
}