#include <iostream>

using namespace std;

int main()
{
    int x;
    cout << "Iveskite skaicius:" << endl;

    int sum = 0, k = 0;
    while (x != 0)
    {
        cin >> x;

        if(x % 10 < 5)
            sum += x;

        k++;
    }

    cout << "k = " << k - 1 << endl;
    cout << "s = " << sum << endl;

    return 0;

}