One of the most exciting events in competitive programming is the time after contest is over till the score and rating are updated. The thrill of that moment itself is strong enough to keep programmers interested to contest programming. To add cherry on top of the cake, Codeforces has a feature of sharing the highest rating change of an individual. But the rating calculation is a bit complex system. So, if we have some example of high rating changes that could be inspiring and also informative for new contestants. What are some of the highest rating changes in a contest in Codeforces?(Please avoid those,if it is the 1st contest or the rating chart looks intentional)