import java.io.*;

class Program{

    public static void main(String[] args) {
        
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int n = Integer.parseInt(br.readLine());
            String[] str1 = br.readLine().split(" ");
            String[] str2 = br.readLine().split(" ");
             System.out.println(diffNum(n,str1,str2)+1);
             System.out.println(str1[diffNum(n,str1,str2)]);
             System.out.println(str2[diffNum(n,str1,str2)]);           
        }catch(IOException e){
            e.getStackTrace();
        }
    }
    
    public static int diffNum(int n, String[] s1, String[] s2){
        int ans = 0;
        for(int i=0; i < n; i++){
            if(s1[i].equals(s2[i]))
                ans++;
            else break;
        }
        return ans;
    }
}