#include<iostream>
#include<vector>
#include<algorithm>

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

    int amida[100];
    for(int i = 0; i < n; ++i) amida[i] = i;
    for(int i = 0; i < k; ++i){
        int from, to;
        std::cin >> from >> to;
        std::swap(amida[from - 1], amida[to - 1]);
    }
    int result[100];
    for(int i = 0; i < n; ++i){
        int num;
        std::cin >> num;
        result[num - 1] = i;
    }

    std::vector<std::pair<int, int> > v;
    for(int i = 0; i < n; ++i){
        int j = 0;
        while(result[i] != amida[j]) j++;
        while(result[i] != amida[i]){
            std::swap(amida[j], amida[j - 1]);
            v.push_back(std::make_pair(j - 1, j));
            j--;
        }
    }

    std::cout << v.size() << std::endl;
    for(int i = 0; i < v.size(); ++i){
        std::cout << v[i].first + 1<< " " << v[i].second + 1 << std::endl;
    }
    return 0;
}