#include "pch.h"
#include <iostream>
 
using namespace std;
 
const int N = 8;
 
int p[N][N];
int zx[N][N];
int zy[N][N];
 
void jump(int i, int k, int v, int i0, int k0)
// skoc na (i,k) a je to v-ty skok, skaceme z (i0, k0)
{
    if (i < N && i >= 0 && k < N && k >= 0)
    {
        if (p[i][k] == -1 || p[i][k] >= v)
        {
            p[i][k] = v;
            zx[i][k] = i0;
            zy[i][k] = k0;
            jump(i + 2, k + 1, v + 1, i, k);
            jump(i + 2, k - 1, v + 1, i, k);
            jump(i - 2, k + 1, v + 1, i, k);
            jump(i - 2, k - 1, v + 1, i, k);
            jump(i + 1, k + 2, v + 1, i, k);
            jump(i + 1, k - 2, v + 1, i, k);
            jump(i - 1, k + 2, v + 1, i, k);
            jump(i - 1, k - 2, v + 1, i, k);
        }
    }
}
 
void search0(int i, int k)
{
    while (i >= 0 && k >= 0)
    {
        cout << i << "," << k << endl;
        int t = zx[i][k];
        k = zy[i][k];
        i = t;
    }
}
 
void search(int i, int k)
{
    if (i >= 0 && k >= 0)
    {
        search (zx[i][k], zy[i][k]);
        cout << i << "," << k << endl;
    }
}
 
int main()
{
    for (int i = 0; i < N; i++)
        for (int k = 0; k < N; k++)
        {
            p[i][k] = -1;
            zx[i][k] = -1;
            zy[i][k] = -1;
        }
 
    jump (0, 0, 0, -1, -1);
 
    for (int i = 0; i < N; i++)
    {
        for (int k = 0; k < N; k++)
        {
            if (p[i][k] == -1)
                cout << ".";
            else
                cout << p[i][k];
            cout << " ";
        }
        cout << endl;
    }
 
    cout << "--------" << endl;
 
    search(N - 1, N - 1);
 
    cout << "O.K." << endl;
}