import java.util.*;
import java.math.*;
import java.awt.geom.*;
import java.awt.font.*;
import java.awt.image.*;
import java.awt.*;
import java.io.*;
import javax.imageio.*;

public class Tupper{
    public static void main(String[] args) throws Exception {

      Scanner in = new Scanner(System.in);

      //选择文字转图象（n值），或n值转图象
      String st; char ch = ' ';
      while(ch != 'A' && ch != 'B'){
	System.out.print("(a)文字 -> 图象/n值\n(b)n值 -> 图象\n请输入a或b：");
	st = in.nextLine();
	st = st.toUpperCase();
	ch = st.charAt(0);
      }
     
      //输入相应参数
      if(ch == 'A'){
	System.out.print("输入一个字符串：");
	String content = in.nextLine();
	System.out.print("输入图片的行数：");
	int lines = in.nextInt();
	System.out.print("输入图片的名称：");
	in.nextLine();
	String name = in.nextLine();
	name = name + ".png";
	BigInteger number = createImage(content, lines, new Font("黑体", Font.BOLD, 72));
	System.out.println("n = " + number);
	translateImage(lines, 10, number, new File(name));
      }
      else{
        System.out.print("输入行数：");
	int lines = in.nextInt();
	System.out.print("输入n值：");
	BigInteger number = in.nextBigInteger();
	System.out.print("输入图片的名称：");
	in.nextLine();
	String name = in.nextLine();
	name = name + ".png";
	translateImage(lines, 5, number, new File(name));
      } 
    }

    public static void translateImage(int lines, int side, BigInteger number, File outFile) throws Exception {

      number = number.divide(BigInteger.valueOf(lines));

      //判断所需要的列数
      BigInteger x = number;
      int k = 0;
      while(x.compareTo(BigInteger.valueOf(0)) != 0){
	k++;
	x = x.divide(BigInteger.valueOf(2));
      }
      k = k/lines + 1;

      //计算图片的长宽
      int width = (k + 2) * side;
      int height = (lines + 2) * side;

      //创建图片
      BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
      Graphics g = image.getGraphics();
      g.setColor(Color.WHITE);
      g.fillRect(0, 0, width, height);//背景色

      //绘制图象
      g.setColor(Color.black);
      for(int rank = k; rank > 0; --rank)
	for(int line = 1; line <= lines; ++line){
	  if(number.mod(BigInteger.valueOf(2)).compareTo(BigInteger.valueOf(1)) == 0)
	    g.fillRect(rank * side, line * side, side, side);
	  number = number.divide(BigInteger.valueOf(2));
	}

      g.dispose();
      ImageIO.write(image, "png", outFile);
    }

    //<根据str,font的样式以及输出文件目录>
    public static BigInteger createImage(String str, int lines, Font font) throws Exception{

      //<获取font的样式应用在str上的整个矩形>
      Rectangle2D r=font.getStringBounds(str, new FontRenderContext(AffineTransform.getScaleInstance(1, 1),false,false));

      int unitHeight=(int)Math.floor(r.getHeight());//<获取单个字符的高度>

      //<获取整个str用了font样式的宽度这里用四舍五入后+1保证宽度绝对能容纳这个字符串作为图片的宽度>
      int width=(int)Math.round(r.getWidth())+1;
      int height=unitHeight;//<把单个字符的高度+3保证高度绝对能容纳字符串作为图片的高度>
      //<创建图片>
      BufferedImage image=new BufferedImage(width,height,BufferedImage.TYPE_INT_BGR);
      Graphics g = image.getGraphics();
      g.setColor(Color.WHITE);
      g.fillRect(0, 0, width, height);//<先用白色填充整张图片,也就是背景>
      g.setColor(Color.black);//<在换成黑色>
      g.setFont(font);//<设置画笔字体>
      g.drawString(str, 0, font.getSize());//<画出字符串>
      int ranks = width / (height / lines);

      //生成n值
      BigInteger ans = BigInteger.valueOf(0);
      BigInteger k = BigInteger.valueOf(1);
      for(int rank = ranks-1; rank >= 0; --rank){
	for(int line = 0; line < lines; ++line){
	  //判断一格应该选择黑色还是白色
	  int x = rank * width / ranks;
	  int y = line * height / lines;
	  int black = 0;
	  int white = 0;
	  for(int i = x; i < x + width / ranks && i < width; ++i)
	    for(int j = y; j < y + height / lines && j < height; ++j){
	      if(image.getRGB(i, j) < -1) black++;
	      else white++;
	    }
	  if(white <= black)
	    ans = ans.add(k);
	  k = k.multiply(BigInteger.valueOf(2));
	}
      }
      g.dispose();
      return ans.multiply(BigInteger.valueOf(lines));
    }
}