Poj Solution 1580

http://poj.org/problem?id=1580

//* @author: 82638882@163.com
import java.util.*;
public class Main
{
 public static void main(String[] args)
  {
   Scanner in=new Scanner(System.in);
   while(true)
    {
    String s1=in.next();
    if(s1.equals("-1"))break;
    String s2=in.next();
    int max=0;
    for(int i=0;i< s1.length();i++)
    {
      int count =0;
      for(int j=0;j< s2.length();j++)
       {
        boolean bb=true;
        if(i+j>=s1.length())
        {
            bb=false;
            break;
        }
        if(!bb)break;
        if(s1.charAt(i+j)==s2.charAt(j))count++;
        }
       if(count>max)max=count;
    }
    for(int i=0;i< s2.length();i++)
    {
    int count =0;
    for(int j=0;j< s1.length();j++)
     {
        boolean bb=true;
        if(i+j>=s2.length())
        {
            bb=false;
            break;
        }
        if(!bb)break;
        if(s2.charAt(i+j)==s1.charAt(j))count++;
     }
    if(count>max)max=count;
        }
    int total=s1.length()+s2.length();
    int sum=max*2;
    System.out.print("appx("+s1+","+s2+") = ");
    if(sum==0)System.out.println(0);
    else if(sum==total)System.out.println(1);
    else 
    {
      while(true)
       {
        boolean bb=false;
        for(int i=2;i<=sum;i++)
        {
              if(sum%i==0&&total%i==0)
            {
            sum/=i;
            total/=i;
            bb=true;
             }
        }
        if(!bb)break;
        }
       System.out.println(sum+"/"+total);
    }
            
   }
 }
}