#include <iostream>
using namespace std;

struct cell
{
    bool full;
    int near;
    int generation;

    cell()
        :full(false), near(0), generation(0) { };
    cell(bool full)
        :full(full), near(0), generation(0) { };

    void NearCellStatusChanged(bool status)
    {
        if (status == true)
            near++;
        else near--;

        if (near == 3)
        {
            full = true;
            generation++;
        }
    }
    void change_status(bool full_, cell c[][100], int row, int col) //
    {
        full = full_;
        for (int q = -1; q < 2; q++)
        {
            for (int q2 = -1; q2 < 2; q2++)
            {
                if (q == 0 && q2 == 0) //this element
                    q2++;
                c[row + q][col + q2].NearCellStatusChanged(full_);
            }

        }
    }
    void delete_check(cell cells[][100], int row, int col)
    {
        if (this->near < 2 || this->near > 3)
        {
            //this->change_status(false, cells, row, col);
            temp_mas_add(row, col);
            this->full = false;
        }
    }

    void temp_mas_add(int row, int col)
    {
        temp_row[i] = row;
        temp_col[i] = col;
        i++;
    }

    static int i;
    static int temp_row[100];
    static int temp_col[100];
};

void update(cell c[][100])
{
    for (int q = 0; q < cell::i; q++)
    {
        c[cell::temp_row[q]][cell::temp_col[q]].change_status(false, c, cell::temp_row[q], cell::temp_col[q]);
    }
    cell::i = 0;
}

int main()
{
    int row[100], col[100];
    cell cells[100][100];
    int i = 0;
    for (i; cin; i++)
    {
        cout << "row: ";
        cin >> row[i];
        cout << "col: ";
        cin >> col[i];
        cout << endl;
        if (row[i] >= 0 && col[i] >= 0) cells[row[i]][col[i]].change_status(true, cells, row[i], col[i]);
    }
    i--;
    int temp[100];
    for (int q = 0; q < i; q++)
    {
        cells[row[q]][col[q]].delete_check(cells, row[q], col[q]);
    }
    update(cells);

    /*
    for (int q = -1; q < i; i++) //pseudo draw
    {
        for (int j = -1; j < i; j++)
        {
            if (cells[row[q]][col[j]].full == true)
                draw;
        }
    }
    */





}