There are some filtering system, possible to select «Unsolvable» problem «www.spoj.com/problems/classical/unsolved/» or sort problem by column names, and paginate selected and sorted list.
But then we select ant tag → like «www.spoj.com/problems/tag/dynamic-programming»
all these functions are broken:
- we cannot sort by columns
- we cannot paginate
- we cannot filter («unsolved») etc.
So, we simple cannot enumerate «all tasks with some tag», if there are >50 problems.
I hope that the site not abandoned, and there are any programmers to fix it.
(see «…/t/sorting-does-not-work-on-the-problems-of-a-particular-tag/11127/2» 6 years!!! )