I don't know , you should get question more clearly !

With many topcoder problems, the solutions may be found instantly just by reading their descriptions. This is possible thanks to a collection of common traits that problems with similar solutions often have.

The best choice is ...Google

what's your problems?

Firstly tell me about your quires.

What you want to find here.

Which type solution you are finding??

What's your problem?

you must think by yourself

problem is very big , nobody can slove for you