#include <bits/stdc++.h>
template<class T> inline bool chmin(T&a, T b){if(a > b){a = b; return true;}else{return false;}}
template<class T> inline bool chmax(T&a, T b){if(a < b){a = b; return true;}else{return false;}}
#define ll long long
#define double long double
#define rep(i,n) for(int i=0;i<(n);i++)
#define REP(i,n) for(int i=1;i<=(n);i++)
#define mod (ll)(1e9+7)
#define inf (ll)(3e18+7)
#define pi (double) acos(-1.0)
#define P pair<int,int>
#define PiP pair<ll,pair<ll,ll>>
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
using namespace std;

int main(){
    int n;
    cin >> n;
    vector<int> a(n), b(n);
    rep(i, n)cin >> a[i];
    rep(i, n)cin >> b[i];
    int ans = (a[0] != b[0]);
    REP(i, n-1){
        ans += (a[i] != b[i] && a[i-1] == b[i-1]);
    }
    cout << ans << endl;
}