Arena Celebrates its 2 years anniversary with a rated contest !
You will be given 3 problems in IOI style and 2.5 hours to solve them, you will need to read from stdin and output to stdout.
Problems will have two or more subtasks, solving subtasks gives you partial score.
Your score will be the sum of your scores on each subtask over all submissions.
Ties are broken by summing the submissions times of the most recent total score-changing submissions.
Problems were prepared and tested bymany thanks to him.
We wish you a higher rating.