help for TLE

Q- http://www.codechef.com/problems/PLAYFIT

A- http://www.codechef.com/viewsolution/2464885

i guess this is the problem code,

        while(h != n)
        {
            l=(h+1);
            while(l != n)
            {
                if(goals[l] > goals[h] && (goals[l]-goals[h]) > diff)
                {
                    diff=goals[l]-goals[h];
                }
                l++;
            }
            h++;
        }

i tried using both for and while loop, but as obvious, it doesn't change anything. Please suggest me how to shorten this code snippet or get rid of TLE anyhow.