#include <bits/stdc++.h>
using namespace std;
using ll = long long;

template<class T> istream& operator >> (istream& is, vector<T>& vec) {
    for(T& x : vec) is >> x;
    return is;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;
    map<int,int> mp;
    for(int i = 0; i < n; i++){
        int v;
        cin >> v;
        mp[v] = i;
    }
    int p = 0;
    ll ans = 0;
    for(int i = 0; i < q; i++){
        int v, nx;
        cin >> v;
        nx = mp[v];
        ans += abs(nx - p);
        p = nx;
    }
    cout << ans << '\n';
}