void find_path(int mat[][8], int aux_mat[][8], int lines, int cols, int l, int c)
{
    if(c<cols)
    {
        if(check(mat, aux_mat, lines, cols, l-1, c)==1) //NORTE
        {
            aux_mat[l-1][c] = 1;
            find_path(mat, aux_mat, lines, cols, l-1, c);
        }
        if(check(mat, aux_mat, lines, cols, l, c+1)==1) //ESTE
        {
            aux_mat[l][c+1] = 1;
            find_path(mat, aux_mat, lines, cols, l, c+1);
        }
        if(check(mat, aux_mat, lines, cols, l+1, c)==1) //SUL
        {
            aux_mat[l+1][c] = 1;
            find_path(mat, aux_mat, lines, cols, l+1, c);
        }
        if(check(mat, aux_mat, lines, cols, l, c-1)==1) //OESTE
        {
            aux_mat[l][c-1] = 1;
            find_path(mat, aux_mat, lines, cols, l, c-1);
        }
    }
}