Привет! Мы приглашаем вас на Codeforces Round 957 (Div. 3), который состоится в 11.07.2024 17:35 (Московское время). Данный раунд будет представлен по правилам третьего дивизиона. Вам будет предложено 7 задач, которые мы с Noobish_Monk, ErnKor, Kmes и ArSarapkin подготовили для вас.
Согласно правилам третьего дивизиона:
Вам будет предложено 7 задач.
Штраф за неверную посылку будет составлять 10 минут.
12-ти часовая фаза открытых взломов после окончания контеста.
После завершения фазы открытых взломов ваши решения будут перетестированы по обновленным тестам.
Напоминаем, что в таблицу официальных результатов попадут только достоверные участники третьего дивизиона. Как написано по ссылке — это вынужденная мера для борьбы с неспортивным поведением. Для квалификации в качестве достоверного участника третьего дивизиона надо:
принять участие не менее чем в пяти рейтинговых раундах (и решить в каждом из них хотя бы одну задачу)
не иметь в рейтинге точку 1900 или выше.
Независимо от того являетесь вы достоверными участниками третьего дивизиона или нет, если ваш рейтинг менее 1600, то раунд для вас будет рейтинговым.
Мы хотим поблагодарить всех, кто помог в составлении раунда:
Наших координаторов, Gornak40 и Vladosiya за чудесную координацию!
Благодарим Михаила MikeMirzayanov Мирзаянова за великолепный Polygon и чарующий Codeforces!
Vladosiya, за то, что он свел на нет лор почти всех задач...
Наших многочисленных тестеров: natalina, FairyWinx, Kosya, ErnKor, 74TrAkToR, ArSarapkin, mainyutin, ibraevdmitriy, gaiercop, _y_0_g_u_r_t, Maksim_Musikhin, Arina77, artimovich.ko, main-scobik, savanzh, davpe, Pronkin_dv, kalita.georgy, kuznetsov.da, s_w_a_n_i_k, Keopint, VolkovMA, kuewa, cry, Harsh_kunwar, Kon567889, dshindov, OAleksa, SajidAbdullah, redkar, george_the_piggy, k1sara и многие другие, которые не указали свой хэндл.
Отдельная благодарность KEFedorov, за привлечение больше 35 тестеров.
Удачи!
UPD1 После окончания раунда Shayan проведёт трансляцию с разбором решений, также будет доступна запись, но также мы подготовим и текстовый разбор.
UPD2 Видео-разбор от Shayan
UPD3 Видео-решение "победителя" этого раунда, neal
UPD4 Текстовый разбор.
UPD5 Поздравляем победителей раунда:
Официальные:
Официальные + Неофициальные:
cool
my goal to reach +1700 after this round
Me too
Good luck!!! My goal is to reach 1200-1300 in the next weeks.
My goal is to participate in the contest.
__ combating unsporting behavior. To qualify as a trusted participant of the fourth division, you must: __ take part in at least five rated rounds (and solve at least one problem in each of them), __ do not have a point of 1900 or higher in the rating. __ Regardless of whether you are a trusted participant of the fourth division or not, if your rating is less than 1600 (or you are a newcomer/unrated), then the round will be rated for you.
why is it fourth division
Copy-pasting issues
Finally I can write this: my first unrated div3 :D
so people rated above 1600 wont be placed on leaderboard ?
They wont be placed on official leaderboard
How I used to think , it will be div 3 which will carry me to expert, but the div 2 hard carried man
Me too:)
As a tester of this round, I will say that the tasks were interesting
Just curious: How do you guys propose a Div3 contest?
Hoping we all get positive delta :)
Hoping we all learn something regardless of delta :). (No offense, but if someone gets positive delta, someone else won't get positive delta)... I like being realistic.
ig you dont know the saying "May you all win"
not strong enough compared to you :)
As a tester i confirm that problems are indeed cool and worth solving.
finally a div3 after a long time.
Can you tell me how to propose div3 contests? Vladosiya, Gornak40 ?
Vladosiya please check dm.
Thank you.
f(n)=(n−1)⋅(f(n−2)+f(n−1))
can we solve this eqn using matrix expo???
if yes then plzz give me the matrix...
this is the recursion for the number of derangements of n
can you send the problem link plzz?
https://cses.fi/problemset/task/1717/
How do you do this ? I have been stuck for 2 hours, I have a formula that can calculate answer for all numbers till n in O(n2) time, but that will give TLE
I like the monk's organization :D
when was the last time we saw a probabilty problem in a div 3 , somebody has to sneak one in there
also i know yall hate math so dont downvote thanks.
UPD1 After the end of the round, Shayan will broadcast the solutions, a recording will also be available, but we will also prepare a textual editorial
Unfortunately many will do it during the contest itself too.
I want to go specialist, Good luck for me
i need 1434 rating
Shayan streams pretty much in recent month for problems' solution. I appreciate him a lot.
As a tester, I can guarantee that the round will be interesting!
I want to solve 3 questions in this contest :)
How to be tester? Is this random?
No, it's not random. Most testers are friends of setters or coordinators. Yes, there are some "random" testers if you want to say it like that, but in a way that they are friends of friends.
OK, thank you ;)
As a problemsetter, good luck, guys!
As a tester of this round, I can say that this round will probably lower your rating, but the tasks are worth solving <3
bro your comment scared me ::skull::
Skill issues
a general doubt, penalty gets applied after correct submisson or doen't depend on correct submission?
time to lock in
I hope I'll be +1300 after this round! Good luck to everyone!
Looking forward to getting my first color today!
will trusted participant be rated ??
or just be included in the official standing ?
Regardless of whether you are a trusted participant of the third division or not, if your rating is less than 1600 (or you are a newcomer/unrated), then the round will be rated for you.
If the rating range is 1600-1900(didn't cross 1900 at any time), then you would only be in the official standings.
Btw, Congrats!! on reaching Expert
Oh , i didn't see it
Thx : )
I hope to go forward and wish for this to be the best Div3. Odin is with us!!!
that went a bit better than last div2 (emphasis on a bit because i somehow crashed my ide 4 times which lost me about 4-6 minutes from E-G)
got stuck on F , ughhhhhhhhhhhhhhh.
Me too :(
:(
Overall very nice problems and good contest. My first time solving E and hopefully I get a good delta :)
is it just brute force ? 1e4*1e4 *100 it should not pass obviously
here's an oberservation: n*a-b can only be at most 7 digits which means b can only have at most 7 values for each a
well nope, brute force is TLE, its basically going over all values of A (10^4 iterations) and the it is guaranteed that the length of a valid string after removing b bits from it will never exceed a length of 7 (cuz the constraints come into play) so for every A , you run 7 inner loops and then obviously you can find b in constant time using a formula.
270014350
you can also solve this with math i believe — start with an empty string (denoted as s), add the digits of n one-by-one to it, then solve the system of equations:
(int)s = n * a - b
numdigits(n) * a - b = numdigits(s)
270034846
ohh, thanks for this :) . During the contest, i was constantly trying to think in this direction cuz this is much more efficient than what i wrote but yeah my brain just didnt work. Thanks for the soln, appreciated.
C is the easiest but it was the hardest for me to write
why was it hard to write? its just printing 2 loops ?
ignore this was my worst performance soo far
Probably Cheating
idk, D is just case handling, and E is running a loop on A and computing B accordingly. As a pupil , D was simple but E took some time
may be this time my brain stopped working possible after getting 3 penalties on A
3 pens on A is ROUGH tbh :)
D was only matter of implementation, Russian cper have quite different sense of indexing something.
like if there is single 'W' between 'L' — "LWL". most people probably would think that simply jump over 'W' without swim, no it wasn't you need to jump first and then swim 1 kek.
wasnt it stated you start at n = 0 (ok to be fair it isnt stated the rest of the inputs are [1..n]) (but it doesnt matter that much)
How did you get TLE,WA on A despite being a 1550?
How to solve F?
set trivializes, only add if its a divisor of x, max 36 elements in the set so it wont tle
How did I not see this..
wow so i was in the right direction just less time ughhh. Used sets but couldnt write correct code fack
bruh 1e5 has 36 factors
but 90000 has 74 factors lol
i dont think that matters, simply going over every factor that can be created does run well in time. 270114245 . And now i feel sed cuz i could have gotten this during contest :(. I wrote the same thing at night just missed the s.insert(1) line during reset of the set
Actually number of divisors of $$$M$$$ is bounded by $$$2\sqrt M$$$ (think of the way we find divisors) In this case the overall time complexity would be $$$O(N\sqrt N)$$$ for $$$N \sim 10^5$$$ which's fast enough
ig for all practical purposes N^1/3 can be used as an upper bound for number of divisors
I literally cannot believe on how ChatGPT unable to solve stupid implementation problem like D.
why would you want chat gpt to solve for you?
Hi All, can anyone help me understand why I am getting memory limit exceeded on problem D? this is my submission, I followed a recursive approach to explore possible options of jumping and swimming, I am not using an extra data structure, thank you in advance for your help!
try passing the string by reference
Was it only for me ,or it was really hard to decode the problems?
oh yeah. very weird descriptions. probably their native language is not English.
None of codeforces, codechef, atcoder speak English natively. Poor preparation is the only reason behind bad statements.
Another round dusted by Indian cheaters.
Me staring at E for 1hr +
My brain got blown away after reading E was like another level for me.DIV3's have become harder now
Sharing my video of winning* the contest: https://www.youtube.com/watch?v=9Vv2ZukG1CM&t=2476s
(*tourist doesn't count)
When tourist enters a contest, everyone aims for the second place.
Great job, I also needed the video. It lightened my day to see where you started it. Also listening to explanations on E-G.
Missed E, and actually missed the first time that I could clear Div3.
That case n = 1 lol XD
Yeah, I've just checked it. My solution deserves to get WA because of my stupidity while not considering all the cases =((
btw big fan, i am trying to solve your previous problems when you were pupil/specialist for practice :)
its okay bro. I got E in like 1hr20 min but i got 2 WA bcoz of fact that string cant be empty. I was so tensed for next 40 minutes and actually we have just 100 different cases so i even tried to find where i was wrong until i read string cant be empty. By that time it was already 2hr10min and penalty was too harsh + no time for F
your rating does not get reevaluated on this right?
Only participants < 1600 are rated in div3. I did it "out of competition" so my rating isn't affected.
oh, thanks for info :)
Ahh, D was so straightforward but I spent like an hour debugging just to get AC in 3 minutes after reimplementing my idea.
What is the thing you have to notice to solve E?
The only way I would be able to solve (I didn't do this) would be to precompute all of n from 2 to 100 and then have a python program just return those precomputed solutions...
How do we solve for B given we check for values of A... Maybe I wasn't on the right track at all for optimal solution though...
Notice that B is also bounded by 10000, so the length of good results is bounded by len(10000*100-1) = 6. So you can simply iterate all strings of length 1-6 for each A
Easier than recent div4 round!
The problems were great, but the confusing statements ruined it for me, I really think more attention should be given to making the statement clear and understandable.
For example in problem D it was not clear that k was for the entire problem, when I read it I thought he could not swim a distance more than k in a row which led to me writing a completely different solution and wasted a lot of time on this.
I spent more time understanding the problems than solving them.
I am not saying the contest is bad, but I felt this should be addressed.
Same, initially i also thought it should be k consecutive rows. Luckily i decided to read samples where answer is NO and one of the test case explained where K need not be in a row
I think you just misread they wrote that k is for the entire swim from 1...n
The river is very cold. Therefore, in total (that is, throughout the entire swim from 0to n+1)Worst Problem was D . First time i solved so poor in DIV3 .
The first line of each test case contains three numbers n,m,k(0≤k≤2⋅105,1≤n≤2⋅105,1≤m≤10) — the length of the river, the distance ErnKor can jump, and the number of meters ErnKor can swim without freezing.
I read n then m then k and hence exchanged k's constraint with m's constraint . Stucked in the whole contest for more than 1 hour while solution is correct.
https://codeforces.me/contest/1992/submission/270048258
same
i mentioned this issue in testing, but unfortunately they did not take it into account
yikes
Actually I also choked because of this , but I also confused about the fact that how to solve this if the task is to compute if swimmer can swim the river if he can continously swim for only k units
. Please explain you solution for this above wrongly interprated question . Thank you
If you are asking about my solution if you could swim for at most k meters continuously, Here is what I tried to do (Not sure if it's correct or not)
I used a prefix sum array to count the number of crocodiles, there is a crocodile between l and r if
pre[r] - pre[l - 1] > 0I used a variable to store where the last log was, If there is water at the current index I check if the distance between it and the last log + m is less than or equal k and that there is no crocodile between log + m and the current index then the current index is reachable.
The rest is similar to the solution of problem D
Ya make sense , It will pass thank's bro
There are so many similar solutions for problem D which have been taken from youtube. They all have just changed variable names while initialising a variable name with m-1 and incrementing a variable if there is water and using some other variables and at last they are checking if variable value is not zero then print yes else no. Loads and Loads of solution in the same format, I had a brainrot seeing 10k+ submissions for D itself.
I might have gotten E in contest time itself but cloudflare had other plans.
Am I really dumb as from submission its looking like D is easy but I was not able to solve it
D was ezz, not 10K easy tho :)
Yeah 5k submission I can understand as I am dumb but 10k is just crazy I am getting -ve delta for sure :(
well cheaters ruin it for actual hard-workers and thats pretty pathetic, like when i was giving div 3's 7-8 month ago and i was rated 900, if i solved 3 i would surely get +ve, but now its sort of impossible, either you get till E to get +ve or else you get fcked
bruh i asked chatgpt to solve D with dp and it actually worked
huh?? gpt might not even do it with a simple loop, how did DP work ? lmao
there is a valid dp solution
i know that brother, just stunned that gpt who cant write conditions in loop did it with DP, impressive to say the least lol
i think chatgpt is just better at dp lol
how brute-force round ，I love it.
Please report this guy. He is sharing answer during the contest time. He is destroying the cp environment. here is the link : https://www.youtube.com/live/frrrP-SHXWA?si=nnX4Ghj0bqvDJEeN
Fantastic round! E was an amazing problem! Thanks a lot for the round Noobish_Monk ErnKor Kmes ArSarapkin and all testers!
there is a question in cf round 957 div3 just completed question no. E Novie Mistake if n==1 for a=3 and b=2 means string is empty value of n*a-b=1 but string is empty means it is zero it is not matching then why question consider string is empty as 1 and it didn't mention anywhere
i got it my mistake
D has a very clean DP solution.
Let $$$dp[i]$$$ denote the minimum number of swims required to reach index $$$i$$$. The transitions are -
For $$$j = i + 1 - m$$$ to $$$i$$$
$$$dp[i + 1] = min(dp[i] + 1, dp[i + 1)$$$, if $$$s[i] =$$$ 'W'
Finally, the answer is YES if $$$dp[n + 1] \le k$$$.
Submission Link: https://codeforces.me/contest/1992/submission/270032188
Yeah, that's true, but I exceeded the memory limit during the contest using dynamic programming, so I used BFS instead. It is also an easy solution.
It's funny because I exceeded the memory limit using a DFS solution, and had to think of a DP solution instead.
both the dp and non dp should be O(N*10) solutions right !
why that extra 10? If you are checking for every possible m , you dont need to.
269966680
Yes, they are both $$$O(n * m).$$$
there is also easier greedy solution using O(1) extra memory: create a variable
last_land_pointand set it =iwhenever you get on the land. Then if everlast_land_pointbecome too far, that is farther than jumping distance, start incrementing a variable for how much to swim. If you hit a crocodile while swimming, not possible. If you have to swim too much, not possible.Code: https://codeforces.me/contest/1992/submission/269973081
That's great, bro! I liked your solution.
Hi, I struggle with tabulation DP, can you share any resource from where I can improve ?
Tabulation DP is pretty much the same as recursive DP, you just have to calculate the DP values in the correct order, that is, the current state being calculated should not depend on a future state. Honestly the best way to learn tabulation DP is to solve more problems, CSES DP section the Atcoder DP contest helped me a lot.
I submitted almost correct solution for E during the contest https://codeforces.me/contest/1992/submission/270016302, the only thing I didn't figured out was to convert to long long instead of size_t in the only place to avoid overflow. So disappointed, I will NEVER use any integer types except long long in competitive programming again!
Can someone point out why my F got hacked?
I did some math and figured that size of my sub and tmp sets can not be more than 30. 270037044
Doesn't
el * nums[i]overflow in an int?270040258 is this hackable?
// Can anybody tell me what's wrong in this implementation of D , I have chosen a variable pos to see if it is possible to pass the river and p tells if we found a "log" , c tells us if i found a "crocodile" and "w" tells us swimming through water i have as usual checked if if it is possible to get to a log then go there otherwise increase the position by m and check if there is one segment to swim to otherwise if only crocodiles were found btw i and i+m segment make pos false.
With this number of if-else-s and no proper indentation, it's hard to get the idea implemented right. The right thing to do is perhaps not to find a particular bug, but to take a step back and observe what can be changed globally. Consider developing these habits:
formatting the code to aid in implementation (any decent IDE has a keyboard shortcut for that)
thinking about solutions with as little if-else-if-if-else... forests as possible
Never thought i will get 4 wrong submission on Div3-A :(
However solved B,C easily but spent too much time on D and didn't got much time to solve E Seems lots of people solved D so i might get -ve delta
I think you will reach pupil easily because you didn't participate in too much contests I participated in more contests so I would be relieved if I got those +50
nah bro just got +7, i think lot of incorrect submission for problem A cost me
Weird statements for D and F
Does anyone know what the error-"Invalid use of deleting symbols" mean? Here's the link for reference 270073853
1 1isn't valid for $$$n=1$$$, because it results in an empty string, which is exceptionally disallowed by the statement.Right, missed that. Thanks!
I'm sure many people brute forced the answers of E, and just made if and else cases of it, there weren't many numbers and was fairly easy to make cases for each n.
yeah since you really only have around 50 thousand cases (optimally) and it wouldn't be very hard to just bash out all the possible cases of a and b.
No that would give TLE, I meant people brute forced the answers beforehand, and made if else cases like: if (n==2) cout << 3 << endl << x1 << x2 << endl .. ... if (n==3) ....
why would that give TLE? i did just that
Personally, I believe that it shouldn't give TLE, due to the extra second it provides for the time constraints, 3 seconds, compared to 2 in B, C, D and 1 in A. I believe it should be possible to optimize enough to fit in the time limit, as 50,000 cases really isn't all that much in computing. You do have a point though.
You are missing the factor of building the number by getting individual digits which is atleast 20 operations for each i from 1 to 10^4. So your total operations would be 10000*5*20 for each test case, so a total 10^8 operations, I personally wouldn't risk on such a solution passing the TL.
one could easily optimize this by precomputing the number of digits that u will need and build the number from there. since that number is quite small it will not TLE
I'm not sure where you're getting these numbers from. Other than the $$$n = 1$$$ case (which has $$$9999$$$ possible answers, since $$$a = b + 1$$$ always works), among all $$$2 \le n \le 100$$$ there are a total of only $$$24$$$ other $$$a, b$$$ pairs actually possible. Precomputing all these and using if else statements would definitely not TLE.
really nice contest, I enjoyed the surplus of math-related questions, and it felt fitting for div 3. great job to all the organizers!
yeah same. as a math olympiad participant, these observation problems were easier to me, which is why i performed so well this time :D. definitely a great contest with some nice problems!
Can someone help me why my submission give a wrong answer in problem F 270081629
I fixed it here 270083428 Although, we can use an array to have much better complexity
Мужики, это конкретный позор с задачей F. Как можно было не написать 1 уточняющее предложение. Или хотя бы 1 тест объяснить. Для чего вообще вам тестеры нужны? Если вы вот так относитесь к задачам.
Мужик, ну тестеры как-то поняли ж условие) Просто обычно в задачах такого типа (разбить массив на отрезки с определённым свойством) уже подразумевается, что переставлять нельзя, что каждый отрезок имеет такое-то свойство и подобное. Вот и получилось, что как-то когда читаешь, можно не заметить, что это не написано
Буду знать. Просто видимо как новичок я вообще этого не понял. Я думаю со мной многие согласятся, что после прочтения не понятно в чём вообще состоит проблема. Т.к. не объявлено, что должны быть ТОЛЬКО плохие подотрезки. Только в конце контеста это написали. Этих проблем вообще не должно быть, потому что пишут хотя бы 1 пример, а лучше пару. Чтобы вопросов не было. А так получается, что легкие задачи с примерами, а сложные(до которых Div 3 новички еле еле доползли(Я)) должны понимать, как будто они уже с опытом. Но за Ешку лайк.
Enjoyed while solving the problems. But descriptions were just too bad. It took much time to understand each problems. Please make descriptions easy so that everybody can understand the questions easily
Congratulations to neal for taking the first place XD !!!
Why my solution for F was hacked? Just because the time constant?
a trend of not able to solve E and getting hacked on F continues
Took me embarrassingly long and with many false attempts to solve E. Solved F and G before it.
a recent trend is to give a constructive problem as div -3,4 E making it confusing wheather to go for e or f
I have rating less than 1600, but this contest is displaying in unrated section in my profile?
That is only because the ratings are not currently calculated
hi. i am a beginner here. just wanted to ask. now, since the hacking phase is over, by when(approximately) will the rating be shown?
After the hacking phase, all solutions will be rerun with the new test cases generated during the hacking phase. This is called System Testing. Your rating will be updated after the System Testing, but not immediately; this might take several hours even after the System Testing is complete.
I expect the overall process to take about a day. However, note that the time required for rating updates can vary.
When can the textual editorial be posted, since youtube isn't accesible in China :(
we'll try to post an editorial in the next three hours.
My rating didn't change even tho I solved 2 questions?
Rating changes didn't happen yet
Thank you
I hacked four solutions of E using the testcase where t=100 and n from 1 to 100. Now as the system tests are visible the second testcase is same as my hack test. How is this possible ?
Hack test — https://codeforces.me/contest/1992/hacks/1055241/test
Submission Link — https://codeforces.me/contest/1992/submission/270051562
It's because their solution is barely passing the time limit, so run to run variance. If it was ran again it might pass and it might not
I am unrated and a newbie right now but still this round is showing unrated for me..
Dude system testing hasn't started yet. The ratings dont change until its done
Since you are a newcomer, this round will be rated for you. It seems you saw your rating graph with the 'All' filter. However, this does not mean that you are unrated for this round; it simply means that the ratings have not been finalized yet.
Please wait for the system testing to be completed. After the system testing is done, you can expect your rating to be updated.
I had submitted 3 questions in the Codeforces Round 472 (rated, Div. 2, based on VK Cup 2018 Round 2) and it was accepted. But when I checked it just now it is not showing my submitted answers and my first question is highlighted red. Also is showing some system checking which is at 77%. Please tell me what is going on as I am new to Code Forces.
Don't worry, system testing is when all the submissions are checked again on larger amount of tests, the problems that you see "rejected" are actually just unchecked yet, you'll see the true result when system testing is finished.
Can anyone explain what is this hack doing?
https://codeforc.es/contest/1992/hacks/1054913
Before the change of statement, I struggled for a long time to understand problem F as I thought about making more "good segment". It's strange, I don't know why I can't get the real meaning. Why no explanation of the problems?
May I know why this contest is not rated though am a trusted participant.
Your rating has been updated. Check your profile.
how to see the test case where I Got hacked I cannot see it in hacks section, as well as there is no test case visible to me with wrong answer verdict
Just follow the instructions on the image. Also, during the hacking phase, you cannot see the hacker's input. If you can't view the tests, this might be the reason.
Here is your test used for hack: Link
Can anyone please help me correct this solution for problem D.
Got WA on 845th test of test case 2.
hey buddy , the problem is the part where you define your state of dp , so what I could understand from the code was dp[i] would give me true/false stating is it possible to go to the end of the river from i.
There are 2 things that are changing in your recursive function , that is i (index) and k (remaining swimm count) but nowhere in the dp state have you mentioned k there is just i.
Look at this example lets say when in the first recursive call you get to an index x with remaining swim count as y and it is possible to cross the river with y amount of swimming so dp[x] will be true. but lets say in future you call the same index again with z remaining swim count (z < y) and it is not possible to swim through the river with z swim , still you will be returning "true" because dp[x] is set to true because of first function call.
Conclusion :
you need to change the definition of dp[i] , instead of saying dp[i] gives me true or false if it possible to reach end from index i , define dp[i] as minimum number of swimming count required to reach end of river from index i . If it is impossible to reach end from i store some large number which cant be your ans in any case. Keep overflow in mind !!
AC soln: 270200685
Need Help ,,,, I don't understand how did I get 4 Penalty and -50 on Rating, please can anyone help me for solving this issue, I don't understand I am new here, please anyone there, hello coders
+00:04 in the ranking list does not means 4 penalty, it means you take 4 minutes to solve that question.Talking about the rating, you got negative delta bcoz you doesn't perform upto your rating level(before contest rating) in the contest.
I want to be a specialist, any tips for it,as my rating don't seem to change
Where's my rating?
+1
Now,it's coming back with 4 points more.