#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;
  vector<int> a(n), b(n);

  REP (i, n) cin >> a[i];
  REP (i, n) cin >> b[i];

  int ret = 0;
  for (int i = 0; i < n; ) {
    int j = i;
    bool c = a[j] == b[j];
    if (!c) ++ret;
    while (j < n && (a[j] == b[j]) == c) {
      ++j;
    }
    i = j;
  }

  cout << ret << endl;
  
  return 0;
}