It is easy to use prefix and know how many units per unit length corresponds to the width

The same re-use of the prefix and how many units have calculated how much contribution has been made

you will make friends with 4 people QwQ

I have no idea why this code can pass problem C. I just Simulate these operations until the timeout or the number of steps exceeds k. QwQ http://codeforces.me/contest/768/submission/24857855

I have known the situation by reading the reply on the home page,you must haven't read the reply by ljh2000.If you have read it,you may not say like that. Anyhow,if you didn't know it at all,I think you shouldn't abuse others. If you think when they all solved the difficult problem div2 E but they come from the same city,it's an imprudent act,I'm sorry to tell you that div2 E is the same as a problem which is published in some websites.As you know,if the code was written and published/distributed before the start of the round,it can't be seen as cheating. We even did this in an contest,because that problem in Chinese websites has been solved by many people... Also,many people in China wrote dfs and segment tree in that style. We are looking forward to studying more knowledge from the test and we all like to solve the interesting and chanllenging problems.We enjoy it and love it. Maybe all people attended the contest wishes to enhance their strength by learning and thinking deeply.Why not concentrate on your study instead of abusing others?