// ROWS 9
// COLUMNS 9

import java.util.*;
import java.text.*;

public class Proj3 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double outter_slope = 2;
        double outter_intercept = 0;



        System.out.print("Enter x1:  ");
        int x1 = input.nextInt();

        System.out.print("Enter y1:  ");
        int y1 = input.nextInt();

        System.out.print("Enter x2:  ");
        int x2 = input.nextInt();

        System.out.print("Enter y2:  ");
        int y2 = input.nextInt();

        double slope = (double)(y2-y1) / (x2-x1);

        double intercept = y1-slope*x1;





        System.out.printf("y = " + "%.2f" + "x" + "  + " + "%.2f\n", slope,intercept    );
        System.out.println();
        int row_number;
        int column_number;

        for(row_number=9;row_number>=0;row_number--) {
            System.out.print(row_number+ " ");
            for(column_number=0;column_number<=9;column_number++) {
                // prints the column number


                if(column_number == 0) {
                    if ( (column_number == x1) && (row_number == y1) || ((column_number == x2) && (row_number == y2))) {
                    System.out.print("*");}

                    if ( (column_number != x1) && (row_number != y1) || ((column_number != x2) && (row_number != y2))) {
                    System.out.print(":");}



            }
               if(column_number != 0) {


                if ( (column_number == x1) && (row_number == y1) || ((column_number == x2) && (row_number == y2))) {
                    System.out.print("*");

                }

                else {
                    System.out.print(" ");

                }


            }











            }
            System.out.println();

            // code for last line
            if (row_number == 0) {
                // prints out the -
                System.out.print("  ");
                for(column_number=0;column_number<=9;column_number++) {
                    System.out.print("-");
                }


                System.out.println();
                System.out.print("  ");

                for(column_number=0;column_number<=9;column_number++) {
                    System.out.print(column_number);
                }


            }
        }
    }
}