#include <bits/stdc++.h>
using namespace std;
#define int long long
typedef pair<int,int> P;
int INF = 1e16+7;
int mod = 1e9+7;
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
signed main() {
    int N;
    cin >> N;
    vector<int>A(N),B(N);
    for(int i = 0; i < N; i++) {
        cin >> A[i];
    }
    int ans = 0;
    bool ok = false;
    for(int i = 0; i < N; i++) {
        cin >> B[i];
        if(A[i] != B[i] && ok == false) {
            ans++;
            ok = true;
        }
        if(A[i] == B[i] && ok == true) {
            ok = false;
        }
    }
    cout << ans << endl;
}