#include <iostream>
using namespace std;

int main()
{

    /*int n;
    cin >> n;
    int a, p;
    int temp = 2;
    int temp2 = temp;
    bool escape = false;
    for (int q = temp; ; q++)
    {
        for (int i = n / 2; i > 1; i--)
        {
            int max = (temp + i - 1);

            for (int j = temp + 1; j <= max; j++)
            {
                temp += j;
            }
            if (temp == n) {
                cout << temp2 << " " << i;
                escape = true;
                break;
            }
            else temp = temp2;
        }
        if (escape == true)
            break;
    }
    */
    /*
    int n;
    cin >> n;
    int after = n;
    int mas[60001];
    for (int i = 0; i < n; i++)
    {
        cin >> mas[i];
    }
    for (int i = 1; i < n; i++)
    {
        if (mas[i] < mas[i - 1])
        {

            after--;
        }
    }
    cout << after << '\n';
    for (int i = 0; i < n; i++)
    {
        if (mas[i] != -1)
            cout << mas[i] << " ";
    }
    cin.unget();
    */
    int mas[5];
    int same = 0;
    int pair = 0;
    int three_of_kind = 0;
    for (int i = 0; i < 5; i++)
    {
        cin >> mas[i];
    }
    bool checked[5]{ false };
    for (int i = 0; i < 5; i++)
    {
        for (int j = 0; j < 5; j++)
        {
            if (mas[i] == mas[j] && i != j && checked[j] == false)
            {
                same++;
                checked[i] = true; checked[j] = true;
            }
        }
        if (same == 1) pair++;
        else if (same == 2) three_of_kind++;
    }
    cout << pair << three_of_kind;

}