/* -*- coding: utf-8 -*-
 *
 * 326.cc: No.326 あみだますたー - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 100;

/* typedef */

typedef vector<int> vi;

/* global variables */

int pas[MAX_N], pbs[MAX_N], bs[MAX_N];

/* subroutines */

/* main */

int main() {
  int n, k;
  cin >> n >> k;

  for (int i = 0; i < n; i++) pbs[i] = bs[i] = i;

  for (int i = 0; i < k; i++) {
    int xi, yi;
    cin >> xi >> yi;
    xi--, yi--;
    swap(pbs[xi], pbs[yi]);
    bs[pbs[xi]] = xi;
    bs[pbs[yi]] = yi;
  }

  for (int i = 0; i < n; i++) {
    int ai;
    cin >> ai;
    ai--;
    pas[ai] = i;
  }
  
  //for (int i = 0; i < n; i++) printf("%d ", bs[i]); putchar('\n');
  //for (int i = 0; i < n; i++) printf("%d ", pbs[i]); putchar('\n');
  //for (int i = 0; i < n; i++) printf("%d ", pas[i]); putchar('\n');

  vi ans;
  
  for (int i = 0; i < n; i++) {
    int &pai = pas[i];
    while (bs[pai] != i) {
      int j = (i < bs[pai]) ? bs[pai] - 1 : bs[pai];
      ans.push_back(j);
      swap(pbs[j], pbs[j + 1]);
      bs[pbs[j]] = j;
      bs[pbs[j + 1]] = j + 1;
    }
  }

  //for (int i = 0; i < n; i++) printf("%d ", bs[i]); putchar('\n');
  //for (int i = 0; i < n; i++) printf("%d ", pbs[i]); putchar('\n');

  printf("%lu\n", ans.size());
  for (int i = 0; i < ans.size(); i++)
    printf("%d %d\n", ans[i] + 1, ans[i] + 2);
  return 0;
}