#include <iostream>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);

    int amount_of_numbers_1st, amount_of_numbers_2nd, amount_of_numbers_3rd;
    int amount_of_successful_numbers=0;
    int **numbers = new int*[3];

    cin>>amount_of_numbers_1st;
    numbers[0] = new int[amount_of_numbers_1st];
    for(int i=0; i<amount_of_numbers_1st; i++)
        cin>>numbers[0][i];

    cin>>amount_of_numbers_2nd;
    numbers[1] = new int[amount_of_numbers_2nd];
    for(int i=0; i<amount_of_numbers_2nd; i++)
        cin>>numbers[1][i];

    cin>>amount_of_numbers_3rd;
    numbers[2] = new int[amount_of_numbers_3rd];
    for(int i=0; i<amount_of_numbers_3rd; i++)
        cin>>numbers[2][i];

    int j=0, k=0, i=0;
    start_of_1st:
    while(i<amount_of_numbers_1st)
    while(j<amount_of_numbers_2nd)
    {
        if(numbers[0][i] > numbers[1][j])
            j++;
        else
            if(numbers[0][i] == numbers[1][j])
///////////////////////////////////////////////
            while(k<amount_of_numbers_3rd)
            {
                if(numbers[0][i] > numbers[2][k])
                    k++;
                else
                    if(numbers[0][i] == numbers[2][k])
                    {
                        amount_of_successful_numbers++;
                        i++; k++; j++; goto start_of_1st;
                    }
                    else
                        {i++; j++; goto start_of_1st;}
            }
/////////////////////////////////////////////////
            else
                {i++; goto start_of_1st;}
    }
    cout<<amount_of_successful_numbers;
return 0;
}