for (int i = 0; i < 2*n-1 ; i++){
        for(int j=0; j < 4*m-3;j++){
            if ( (i%2 == 0) && (j%4 == 0) ){
                if      ( (i/2 == start/m) && (j/4 == start%m))
                    rysunek[i][j] = 'P';
                else if ( (i/2 == (koniec/m)) && (j/4 == koniec%m))
                    rysunek[i][j] = 'K';
                else
                    rysunek[i][j] = '.';
            }
            else if(rysunek[i][j]== '-'){
                rysunek[i][j] = '_';
            }
            //cout << rysunek[i][j];
        }
        //cout << endl;
    }