using System;

public class Hello
{
    static void Main()
    {
        var n = int.Parse(Console.ReadLine().Trim());
        getAns(n);
    }
    static void getAns (int n)
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        string[] line2 = Console.ReadLine().Trim().Split(' ');
        var count = 0;
        var pre = true;
        for (int i = 0; i < n; i++)
        {
            var t = line[i] == line2[i];
            if (t && !pre) count++;
            pre = t;
        }
        if (!pre) count++;
        Console.WriteLine(count);
    }
}