代码是这样的:
//1207  实在是不知道哪里错了啊....
import java.util.*;
import java.io.*;

public class Main {
    
	int timeCount(int source){
	    int	 count=0;
	    while(source!=1){
	    	if(source%2==1) {
	    		source=source*3+1;
	    		count++;
	    	}else{
	    		source=source/2;
	    	    count++;
	    	  	    	}
	        
	    	}
           return (count+1);	    
	 }
	
	int timeMax(int i,int j){
	   int timemax=0;int low=i;int high=j;
	   if(i>j){low=j;high=i;}
	   for(int k=low;k<=high;k++)
		   if(timeCount(k)>timemax) timemax=timeCount(k);
	   return timemax;
	}
	
	        
	public static void main(String[] args) throws IOException{
	   Main m=new Main();
	   Vector vec=new Vector();
	   BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in));
       String line=stdin.readLine();
       StringTokenizer st=new StringTokenizer(line);
       while(st.countTokens()==2){   	      	  
    	   int begin=Integer.parseInt(st.nextToken());
    	   int end=Integer.parseInt(st.nextToken());
    	   int temp=m.timeMax(begin, end);
    	   vec.addElement(begin+" "+end+" "+temp);
    	   line=stdin.readLine();
    	   st=new StringTokenizer(line);

       }
       for(int i=0;i<vec.size();i++){
    	   System.out.println(vec.elementAt(i));
       }
	}
}