251791328 Div2-D why this submissions RE？It run ok in my computer.

FOR（MEX，1，n+1） { Find Range of L in this MEX Find Range of R in this MEX answer += len of Range_L * len of Range_R } you can solve MEX=i by MEX=i-1

maybe survivorship bias？

each node can only chose a direction to Switch to other color，if a node use a direction to switch to a different color, then for others, they can only choice the direction that Parallel to the others.therefor， it is a problem that only need to think with row or col

but they lose their time!

In fact, this is not the only round that I can find the same problem that I have done before. In the last round, Education Codeforce Round 132, I found that I have done problem C last year and problem D just this week. So I just use the code that my friend and I have wrote before the contest and the AC code we have see in a blog,(we even have wrote another blog to talk about the problem before the contest!), and get the system message that said it was a violation of the rules since we use the same code. But that was because we have done it before the contest! The rules in http://mirror.codeforces.com/blog/entry/8790 said that use the code that have been wrote before the contest is allowed, I comply with the message to plead a miscarriage of justice against me, but no one reply, There was no one to deal with it. So，

the system message：“If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details.”

the rule：“Solutions and test generators can only use source code completely written by you, with the following two exceptions: the code was written and published/distributed before the start of the round, the code is generated using tools that were written and published/distributed before the start of the round.”

They look useless！There's no administrator to reverse my misjudgment. no administrator tell me that if I need to Provide more evidence. Even if you insist on misjudging me， please let me know to Provide more evidence to prove that!

http://mirror.codeforces.com/blog/entry/8790 http://acm.hdu.edu.cn/showproblem.php?pid=4915 http://t.csdn.cn/5qwDN https://www.acwing.com/file_system/file/content/whole/index/content/6131167/

In fact, this is not the only round that I can find the same problem that I have done before. In the last round, Education Codeforce Round 132, I found that I have done problem C last year and problem D just this week. So I just use the code that my friend and I have wrote before the contest and the AC code we have see in a blog,(we even have wrote another blog to talk about the problem before the contest!), and get the system message that said it was a violation of the rules since we use the same code. But that was because we have done it before the contest! The rules in http://mirror.codeforces.com/blog/entry/8790 said that use the code that have been wrote before the contest is allowed, I comply with the message to plead a miscarriage of justice against me, but no one reply, There was no one to deal with it. So，

the system message：“If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details.”

the rule：“Solutions and test generators can only use source code completely written by you, with the following two exceptions: the code was written and published/distributed before the start of the round, the code is generated using tools that were written and published/distributed before the start of the round.”

They look useless！There's no administrator to reverse my misjudgment. no administrator tell me that if I need to Provide more evidence. Even if you insist on misjudging me， please let me know to Provide more evidence to prove that!

http://mirror.codeforces.com/blog/entry/8790 http://acm.hdu.edu.cn/showproblem.php?pid=4915 http://t.csdn.cn/5qwDN https://www.acwing.com/file_system/file/content/whole/index/content/6131167/

Appeal of Educational Codeforces Round 132

Dear Sir or Madam， We got a message from the system after “Educational Codeforces Round 132”：

“If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://mirror.codeforces.com/blog/entry/8790. ”

So we followed the message to appeal. In fact, we did problem C last year and I did problem D this week coincidentally (The only difference of them is the way of input and output). That is why both of our code is similar to so many others. Some of them I don’t know before, they might have done the same problem before. Some of them are my friends, we have done these two problems together, and some of the code we use is the template we decided on together.

The rules in http://mirror.codeforces.com/blog/entry/8790 said this is allowed:

“Solutions and test generators can only use source code completely written by you, with the following two exceptions: 1.the code was written and published/distributed before the start of the round, 2.the code is generated using tools that were written and published/distributed before the start of the round.”

Here are the evidences. They all wrote before the contest 132! (If you need more evidence to judge, please contact me):

C: http://acm.hdu.edu.cn/showproblem.php?pid=4915（where we find C first）

http://t.csdn.cn/5qwDN（where we learn C first）

D: https://www.acwing.com/file_system/file/content/whole/index/content/6131167/ （the templates that we wrote and published）

We apologize for the extra work this has caused. But we did not break any rules. The same problems are what none of us want to see. Please correctly judge this special case and cancel the wrong punishment for us. We also want to know what to do next time we encounter the same situation. This is not the first time we meet the same problems in codeforces contest that we have done before. Since we are teammate, we need to make our code style same, use the same template, and work on the problem together (not in contest, when we learn). It always leads to the probability of being punished by mistake when we meet the same problem we have done before. We have already done the problem coincidentally before the contest, spending lots of time to learn how it work, But we still have to spend a lot of time modify code in contest to avoid being punished for mistakes. That sounds very unreasonable! Please judge correctly. Withdraw our wrongful punishment. And tell as what to do next time we meet such a situation. (We also don’t like this situation!). If there is anything else we can do for you, please let us know. Yours, AINgray and DeepLearning-

Appeal of Educational Codeforces Round 132

Dear Sir or Madam， We got a message from the system after “Educational Codeforces Round 132”：

“If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://mirror.codeforces.com/blog/entry/8790. ”

So we followed the message to appeal. In fact, we did problem C last year and I did problem D this week coincidentally (The only difference of them is the way of input and output). That is why both of our code is similar to so many others. Some of them I don’t know before, they might have done the same problem before. Some of them are my friends, we have done these two problems together, and some of the code we use is the template we decided on together.

The rules in http://mirror.codeforces.com/blog/entry/8790 said this is allowed:

“Solutions and test generators can only use source code completely written by you, with the following two exceptions: 1.the code was written and published/distributed before the start of the round, 2.the code is generated using tools that were written and published/distributed before the start of the round.”

Here are the evidences. They all wrote before the contest 132! (If you need more evidence to judge, please contact me):

C: http://acm.hdu.edu.cn/showproblem.php?pid=4915（where we find C first）

http://t.csdn.cn/5qwDN（where we learn C first）

D: https://www.acwing.com/file_system/file/content/whole/index/content/6131167/ （the templates that we wrote and published）

We apologize for the extra work this has caused. But we did not break any rules. The same problems are what none of us want to see. Please correctly judge this special case and cancel the wrong punishment for us. We also want to know what to do next time we encounter the same situation. This is not the first time we meet the same problems in codeforces contest that we have done before. Since we are teammate, we need to make our code style same, use the same template, and work on the problem together (not in contest, when we learn). It always leads to the probability of being punished by mistake when we meet the same problem we have done before. We have already done the problem coincidentally before the contest, spending lots of time to learn how it work, But we still have to spend a lot of time modify code in contest to avoid being punished for mistakes. That sounds very unreasonable! Please judge correctly. Withdraw our wrongful punishment. And tell as what to do next time we meet such a situation. (We also don’t like this situation!). If there is anything else we can do for you, please let us know. Yours, AINgray and DeepLearning-

Appeal of Educational Codeforces Round 132

Dear Sir or Madam， We got a message from the system after “Educational Codeforces Round 132”：

“If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://mirror.codeforces.com/blog/entry/8790. ”

So we followed the message to appeal. In fact, we did problem C last year and I did problem D this week coincidentally (The only difference of them is the way of input and output). That is why both of our code is similar to so many others. Some of them I don’t know before, they might have done the same problem before. Some of them are my friends, we have done these two problems together, and some of the code we use is the template we decided on together.

The rules in http://mirror.codeforces.com/blog/entry/8790 said this is allowed:

“Solutions and test generators can only use source code completely written by you, with the following two exceptions: 1.the code was written and published/distributed before the start of the round, 2.the code is generated using tools that were written and published/distributed before the start of the round.”

Here are the evidences. They all wrote before the contest 132! (If you need more evidence to judge, please contact me):

C: Your text to link here... （where we find C first）

Your text to link here... （where we learn C first）

D: Your text to link here... （the templates that we wrote and published）

We apologize for the extra work this has caused. But we did not break any rules. The same problems are what none of us want to see. Please correctly judge this special case and cancel the wrong punishment for us. We also want to know what to do next time we encounter the same situation. This is not the first time we meet the same problems in codeforces contest that we have done before. Since we are teammate, we need to make our code style same, use the same template, and work on the problem together (not in contest, when we learn). It always leads to the probability of being punished by mistake when we meet the same problem we have done before. We have already done the problem coincidentally before the contest, spending lots of time to learn how it work, But we still have to spend a lot of time modify code in contest to avoid being punished for mistakes. That sounds very unreasonable! Please judge correctly. Withdraw our wrongful punishment. And tell as what to do next time we meet such a situation. (We also don’t like this situation!). If there is anything else we can do for you, please let us know. Yours, AINgray and DeepLearning-

I'm not very good at using this feature and mistakenly sent this message the message I really want to send is below sorry please ignore this message

In fact，even now i dont sure what problem A want to say.I just guess a way to solve it and get AC.

it dead.hacked.(╥﹏╥)

For each good it is sure that u can get a[i]/k.Then you still have to deal with n a[i]%k. Use f[j] to record the number of a[i]%k that == j. If u can find two things that add up over k，ans++. Even the biggest two goods，still 2k-2，and after /k，it is 1. 159835536

I can't wait to get back the rate I lost in #789!!!ψ(｀∇´)ψ

I mistakenly thought F meant: For every x(l<=x,x<=r), ax has to occur more than k times between l and r Find the longest segment and output l,r This is much more difficult than the correct question

First,you have to wait 12 hours since this contest need to be hacked. Then,you have to wait some hours since each submission need to be retest by more data(especially the hack data). Finaly,you only have to wait some hours again since the contest need time to calculate our rate.

Sure.But in order not to flood the screen,I can only post part of it.Hope you like them! happy： ✧٩(ˊωˋ*)و✧ (≧▽≦) surprise： Σ(っ °Д °;)っ （｀Δ´）！ angry： ╰（‵□′）╯ shy： (//∇//) debug： (ノ=Д=)ノ┻━┻ ac: (*'▽'*)♪ wa: ｡ﾟ(ﾟ´Д｀ﾟ)ﾟ｡ hack: ψ(｀∇´)ψ

a char picture，mean respect admire，just like ヽ(*´з｀*)ﾉ (*'▽'*)♪ these

I want to click on “Vote：I like it”，but I click on “Vote：I do not like it” by mistak。How can I change it？ qvq

SJF YYDS！！！

My A problem was garbled but I passed the in-match test and got RE after the match because the array was opened too small.How happy I was at the end of the race and how sad I was after the retest.｡ﾟ(ﾟ´Д｀ﾟ)ﾟ｡