Hi!

I am glad to invite you to Infinitum April'14, a monthly contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum-apr14

It's a 4 day contest with 6 problems with problem statements in English, Russian and Chinese.

You can view the last month's challenges here: https://www.hackerrank.com/infinitum-mar14/challenges

This month, the problems are much more interesting, have more variety and are a little more difficult.

Looking forward to a great participation! :)