using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;
using System.IO;

class Program
{
    static private Magatro M = new Magatro();
    static private void Main(string[]args)
    {
        M.Scan();
        M.Solve();
    }
}

public class Scanner
{
    private string[] S;
    private int Index;
    private char Separator;

    public Scanner(char separator = ' ')
    {
        Index = 0;
        Separator = separator;
    }

    private string[] Line()
    {
        return Console.ReadLine().Split(Separator);
    }

    public string Next()
    {
        string result;
        if (S == null || Index >= S.Length)
        {
            S = Line();
            Index = 0;
        }
        result = S[Index];
        Index++;
        return result;
    }
    public int NextInt()
    {
        return int.Parse(Next());
    }
    public double NextDouble()
    {
        return double.Parse(Next());
    }
    public long NextLong()
    {
        return long.Parse(Next());
    }
}

public class Magatro
{
    private int N, K;
    private int[] X, Y;
    private int[] A;

    public void Scan()
    {
        Scanner sc = new Scanner();
        N = sc.NextInt();
        K = sc.NextInt();
        X = new int[K];
        Y = new int[K];
        A = new int[N];
        for(int i = 0; i < K; i++)
        {
            X[i] = sc.NextInt();
            Y[i] = sc.NextInt();
        }
        for(int i = 0; i < N; i++)
        {
            A[i] = sc.NextInt();
        }
    }

    public void Solve()
    {
        foreach (int i in X)
        {
            Swap(ref A[i], ref A[i - 1]);
        }
        List<int> result = new List<int>();
        for(int i = 1; i < N; i++)
        {
            for(int j = 1; j < N - i + 1; j++)
            {
                if (A[j] < A[j - 1])
                {
                    Swap(ref A[j], ref A[j - 1]);
                    result.Add(j);
                }
            }
        }
        Console.WriteLine(result.Count);
        foreach(int i in result)
        {
            Console.WriteLine($"{i} {i + 1}", i);
        }
    }

    private void Swap(ref int a,ref int b)
    {
        int temp = a;
        a = b;
        b = temp;
    }
}