Timus_1880

//Timus 1880
#include <iostream>
using namespace std;
int main()
{
    int n1, n2, n3, all, nn[12001], answ=0, sub, ch=0;
    cin >> n1;
    for(int i=0;i<n1;i++)
    {
        cin >> nn[i];
    }
    cin >> n2;
    for(int i=n1;i<(n1+n2);i++)
    {
        cin >> nn[i];
    }
    cin >> n3;
    all = n1+n2+n3;
    for(int i=(n1+n2);i<all;i++)
    {
        cin >> nn[i];
    }
    for(int i=0;i<all;i++)
    {
        for(int y=0;y<all-1;y++)
        {
            if(nn[y]>nn[y+1])
            {
                sub = nn[y];
                nn[y] = nn[y+1];
                nn[y+1] = sub;
            }
        }
    }
    for(int i=0;i<all;i++)
    {
        if(nn[i] == nn[i+1] && nn [i+1] == nn[i+2])
        {
            answ++;
        }
    }
    cout << answ;
    return 0;
}