#include <bits/stdc++.h>
using namespace std;
typedef vector<int> VI;
#define REP(i, n) for(int(i)=0;(i)<(n);++(i))
#define in(T,V) T V;cin>>V;

int X[6666],Y,A[111];

int main(){
    in(int,N); in(int,K);
    REP(i,K) cin >> X[i] >> Y;
    REP(i,N) cin >> A[i];
    REP(i,K) swap(A[X[i]-1],A[X[i]]);

    VI res;
    REP(i,N) REP(j,N-1){
        auto f = [&](int i){ if(A[i] > A[i+1]){ swap(A[i], A[i+1]); res.push_back(i+1); }};
        f(j); f(N-2-j);
    }
    cout << res.size() << endl;
    for(auto &v : res) cout << v << " " << v+1 << endl;
}