#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vl = vector<ll>;
using vvl = vector<vector<ll>>;
#define all(x) x.begin(),x.end()
#define rep(i,j,n) for (long long i = j; i < (long long)(n); i++)
#define _GLIBCXX_DEBUG
const ll MOD = 1000000007;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
//(a+b-1)/b
//priority_queue<ll, vector<ll>, greater<ll>> q;


signed main(){
	//cout << fixed << setprecision(10);
	ll n; cin >> n;
	vl a(n),b(n);
	rep(i,0,n)cin >>a[i];
	rep(i,0,n)cin >> b[i];
	ll ans = 0, cnt = 0;
	rep(i,0,n){
		if(a[i] != b[i])cnt++;
		else{
			ans += (cnt != 0);
			cnt = 0;
		}
	}
	ans += (cnt != 0);
	cout << ans << endl;


	return 0;
}