import java.io.*;
import java.util.*;

public class B_CoinPlay {
    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    private static StringTokenizer st;

    private static int readInt() throws IOException {
        while (st == null || !st.hasMoreTokens()) st = new StringTokenizer(br.readLine());
        return Integer.parseInt(st.nextToken());
    }

    private static int[] readIntArray(final int n) throws IOException {
        int[] a = new int[n];
        for (int i = 0; i < n; i++) a[i]= readInt();
        return a;
    }

    public static void main(String[] args) throws IOException {
        int N = readInt();
        int[] A = readIntArray(N);
        int[] B = readIntArray(N);

        int count = 0;
        boolean theSame = true;
        for (int i = 0; i < N; i++) {
            if (A[i] == B[i]) theSame = true;
            else {
                if (theSame) count ++;
                theSame = false;
            }
        }

        System.out.println(count);
    }
}