#include<iostream>
#include<string>
#include<vector>

using namespace std;

signed main(){
  int N;
  vector<int> A, B;

  cin>>N;

  A.resize(N);
  B.resize(N);

  for(int i = 0; i < N; i++){
    cin>>A[i];
  }

  for(int i = 0; i < N; i++){
    cin>>B[i];
  }

  int con = 0, con2 = 0;
  for(int i = 0; i < N; i++){

    if((A[i] + con2)%2 != B[i]) {
      if(con2 == 0)con++, con2++;
      else con2--;
    }
  }

  cout<<con<<endl;

  return 0;
}