#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using namespace std;


int main()
{
    int n, cnt = 0;
    bool yes = false;
    cin >> n;
    vector<long long> v1(n), v2(n);
    for (int i = 0; i < n; i++) cin >> v1[i];
    for (int i = 0; i < n; i++) cin >> v2[i];
    for (int i = 0; i < n; i++){
        if (!yes && v1[i] != v2[i]) yes = true;
        else if (yes && v1[i] == v2[i]){
            cnt++;
            yes = false;
        }
    }
    if (yes) cnt++;
    cout << cnt << endl;
}