#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;

int main(){
    int n;
    scanf("%d",&n);
    vector<int> a(n),b(n);
    rep(i,n) scanf("%d",&a[i]);
    rep(i,n) scanf("%d",&b[i]);
    int ans = 0;
    bool now = false;
    rep(i,n){
        if(a[i]!=b[i]){
            if(now) continue;
            else{
                now = true;
                ++ans;
            }
        }else{
            if(now) now = false;
        }
    }
    printf("%d\n",ans);
    return 0;
}