package triangles;

import java.lang.StringBuffer;
import java.util.Scanner;

public class triangles {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);

        System.out.print("Please input the number of rows: ");
        int rows = s.nextInt();

        System.out.print("Please input the number of columns: ");
        int columns = s.nextInt();

        s.close();

        if((columns % 4) != 1) {
            System.out.println("\"Columns\" must be a multiple of n+4");
            return;
        }

        if(((columns - 1) / 2) + 1 > rows) {
            System.out.println("\"Rows\" must be >= (columns / 2) + 1");
            return;
        }

        int remaining = rows - ((columns + 1) / 2);
        rows = ((columns + 1) / 2);
        //System.out.println(remaining);

        if(remaining % 2 != 0) {
            System.out.println("The extra number or rows must be even (add 1 to input)");
            return;
        }

        if(remaining != 0) {
            StringBuffer buffer = new StringBuffer();
            for(int i = 0; i < columns; i += 1) {
                buffer.append("+ ");
            }

            for(int i = 0; i < remaining / 2; i += 1) {
                System.out.println(buffer.toString());
            }

        }

        for(int i = 1, j = 0; j < rows; i += 2, j+= 1) {
            StringBuffer lineBuffer = new StringBuffer();

            for(int k = 1; k < ((columns - i) / 2) + 1; k += 1) {
                lineBuffer.append("  ");
            }

            for(int l = 0; l < i; l += 1) {
                int m = 0;

                if((l > (rows + 1) / 2)) {

                    if(l != rows - 1) {

                    }
                } else {
                    lineBuffer.append("x ");
                }
            }

            System.out.println(lineBuffer.toString());

        }

        if(remaining != 0) {
            StringBuffer buffer = new StringBuffer();
            for(int i = 0; i < columns; i += 1) {
                buffer.append("+ ");
            }

            for(int i = 0; i < remaining / 2; i += 1) {
                System.out.println(buffer.toString());
            }

        }

    }
}