Poj Solution 1969

http://poj.org/problem?id=1969

import java.util.*;   
  
public class Main {   
  
    public static void main(String[] args) {   
        Scanner cin = new Scanner(System.in);   
           
        while(cin.hasNext())   
        {   
            int num = cin.nextInt();   
            int index = 1;   
            int result = 0;   
            while(result <= num)   
            {   
                result += index;   
                index ++;   
            }   
            result -= (index-1);   
               
            int layer = index - 1;   
            int offset = num - result;   
            int up, down = 0;   
               
            if(layer % 2 == 0)   
            {   
                if(offset == 0)   
                {   
                    up = 1;   
                    down = layer - 1;   
                }   
                else  
                {   
                    up = offset;   
                    down = layer + 1 - offset;    
                }   
            }   
            else  
            {   
                if(offset == 0)   
                {   
                    up = layer - 1;   
                    down = 1;   
                }   
                else  
                {   
                    up = layer + 1 - offset;   
                    down = offset;     
                }   
            }   
            System.out.println("TERM " + num + " IS " + up + "/" + down);   
        }   
    }   
}