Poj Solution 2556

http://poj.org/problem?id=2556

//* @author: 82638882@163.com
import java.util.*;
public class Main
{
 public static void main(String[] args)
 {
  Scanner in=new Scanner(System.in);
  while(in.hasNext())
  {
   String s=in.next();
   System.out.println("300 420 moveto");
   System.out.println("310 420 lineto");
   int b=0;
   int x=310;
   int y=420;
   for(int i=0;i< s.length();i++)
    {
    char c=s.charAt(i);
    if(b==0)
    {
       if(c=='A'){
         y-=10;
         b=1;
       }
       else {
        y+=10;
        b=3;
       }
         }
    else if(b==1)
     {
       if(c=='A'){
         x-=10;
         b=2;
       }
       else {
        x+=10;
        b=0;
       }
    }
    else if(b==2)
     {
       if(c=='A'){
         y+=10;
         b=3;
       }
       else {
        y-=10;
        b=1;
       }
    }
    else if(b==3)
     {
       if(c=='A'){
         x+=10;
         b=0;
       }
       else {
         x-=10;
         b=2;
       }
    }
    System.out.println(x+" "+y+" lineto");
     }
     System.out.println("stroke");
     System.out.println("showpage");
    }
 }
}