#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

int N, A[1010101], B[1010101], cnt;
bool flag = false;

int main() {
  cin >> N;
  for (int i = 1; i <= N; i++) cin >> A[i];
  for (int i = 1; i <= N; i++) cin >> B[i];
  for (int i = 1; i <= N; i++) {
    if (A[i] != B[i]) {
      if (!flag) cnt++;
      flag = true;
    } else if (A[i] == B[i]) {
      flag = false;
    }
  }
  cout << cnt << endl;
  return 0;
}