i want to know ACM problom's answer or tip.

[Jung Seng Won]

These day i practice ACM problem. and many times, i can't understand problem. i am studying by "Programming challenges" book. but that book only give me problom, not answer. what i want to say is i want to know tip. May be there are people who solve problom, and i don't want to code or source, i just want to know how they can solve that problem. so, do you know website about ACM problom and tip?

firstly, i am sorry, i am from korea. and i am not good in wriitting english so please understand~ Thank you everyone~

[Alan Balkany]

You can try posting a specific problem in the Mathematics and Algorithms forum and ask for a tip. There are many people there that will help you.