[Exam reflection] 0727NOIP simulation tests 9

Aha? Water to a rk1?

Thank you big brother drainage let people like me experience the taste of rk1.

Strange taste. Not quite like my level.

In fact, this test has the mentality of a Buddha, just realize pricey scores first six cumulative exam is emptied, and two 7-8 and exploded. . .

Wind, do my best.

Not nervous. I heard liu_runda the topic, is a good question, try it, do not expect to much higher scores, but as high as possible

There is no standing flag, no goal, just want stable state of mind, do not waste a good question

Into T1, look, the original root? Would like L Refrain the NC should be happy. I'm not happy, ah, too (even sample did not see).

T2 first thought it was a data structure or a tree on? Like a board, too. (Yesterday T2 5 minutes scars)

T3, eh? I like this question. I think that gave 25 points, 25 points to give it a little thought, so do question the whole process will be very happy ah

Ah, the top 25% of the test point is the last test of the original title, ah, water over the water too.

Because of their own and did not have much hope, so try to think that the practice of the last tdcp.

Sticky link: https: //www.cnblogs.com/hzoi-DeepinC/p/11227874.html.

Later, with the number of combinations of hard launch, because this question is no second argument, so the answer is a square, then it is easy to find the law a number of combinations.

Hey, over a sample, 25 sub-hand, flattered.

Then look at the second inquiry, ah, Cattleya number of templates! He has put on a number of combinations to play out, simply add one line of code is enough.

Kazakhstan, took another sample, 25 minutes, not long after the opening test, 50 should stabilize, super happy.

A third asked, why the sudden small n? And yet the shadow of some number of Cattleya, can the n- 2 , dp it ah!

Also, playing a table, there has been found which is larger than the prime number n: is a significant accumulation in some way ah

Gangster Zhaomaohuahu learn a little Internet set up a f, defined in considering the inclusion-exclusion repeat something, the result is. . . Launch a

IV asked, feeling like a two-dimensional number Cattleya. Uh, a very direct way of thinking, with two numbers multiplied ah Cartland

Hit a table with a violence program, a number Nakatelan contrast, super-simple.

Calculator where there is a decomposition of the quality factor of the function, you can use it to initially speculated that this question is still dp find the law. (DeepinC)

Cattleya number always play great use when you do not know when the law can not be found to depend on the number of Cattleya. (mikufun)

A law problem, especially when only one or two parameters, hit the table with violence program to find the law is a good choice. (hzoi_tdcp)

Even hit the table without finding out the law, direct cross-table what is wrong it? (kx)

So the more the T3 test of skill, I make good use of all kinds of clever but useless so A out. Overall 7 AC.

Then, as usual, I think I had a hand 100 points (although previously thought and he never will be a time inexplicable explosion)

The more accurate judgment. But it did not affect my state of mind - before exams thought I could A certain questions, the points of time before we know. . .

So this does not change the mentality, as it is the last question has been deleted, everyone did not score, do two questions before the line.

 

T2 is a combo obvious problems, a child can be very significant problem O (n) demand, another first glance it can only make you push inverse Gaussian elimination.

I did not think, can not think of positive solutions to their own estimates, I think they will get a score above first to get.

The results did not realize Gaussian elimination integer domain approach. -Nan hit a floating-point number, I do not know why.

There is always a wonderful story between me and Gauss. I am not a card precision is not a legitimate operation.

However, problems usually do when the problem has been exposed before, I always will be wrong, I do not know how to cheat in the past would be finished.

So this exam innocent explosion lost 20 points. (In fact, the 10 points was also a mystery how)

Usually mistake to be corrected in time, understand the principle, not to question the amount of brush and brush the question, so as not to expose problems in the examination room. [! the second time! ]

Positive solutions, then follow the need of the idea want to go sub-section entitled Why let a tree degenerate into a chain?

Those parts of the sub-ideas strange there are special restrictions are often used to inspire positive solutions.

One important way to optimize the degree of complexity: To observe and simplified formula.

 

Finally look at T1, what? Sun Jinning? Primitive root? Euler's theorem? m = 1e9?

There are about 25 minutes, so-so matrix multiplication, 50 minutes ago looks pretty ordinary

However, I looked at the simple example, Shoumo about the results and sample output actually not the same? !

I have tried a few times, trying to understand sample output, really can not understand ah! Together with suspected life, he has passed for 5 minutes.

There are 20 minutes to give up T1?

Ah, I feel I'm right ah. This is not the question I was going to die ah ranking

Go next door to the room asked the coach: ah? right? I do not know. You go next door to ask seniors it.

Like to go through the same business that it ran, then ran it, forever.

Then what can I do ah? Lamb. Ask seniors.

The sample is like this at the time of the last exam. Seniors doubt I was wrong probability is 30%

Announcement information about the investigation at the time of the last test, no corrections. Seniors doubt I was wrong probability is 50%

When he put a stick down the code of AC, there is no particular comment, seniors doubt I was wrong probability of 70%

The compiler dead life and death can not run. I see that seniors do not fly the way, I was wrong suspect probability of 90%

Finally, the sample bag. . . Seniors doubt I was wrong probability is 0%

" Well , you tell them what, two rooms say it ."

Uh, there are less than 20 minutes, I went to inform? This question I do not ah?

Anyway, I went anyway, then screams and ran.

Within the limits of his life time maximum speed code a matrix multiply, add a special sentence, pay up. (40 marks)

Left 4 minutes, just looking at the code T1 code daze, found himself sentenced especially wrong, rapid correction, +10 points.

Every minute on the exam are very critical, do not think the last few minutes you get a lot of points!

Satisfied. Exam is over.

You tell me the results of the matrix multiplication expect to score 80? !

mod <= 300, m <= 1e9. This is for test point O (MOD . 3 × log 2 m) Design? !

Calcd 8.1e8. How could this card too ah. Try to optimize the constant, a point not earn more.

Cancer data pit me 30 minutes! Sure enough, the original root of people will not generally constant.

Exam last minute, do not like this kind of knock F5 heartbeat feeling. Anyway, this time also no idea, so I went to the toilet.

I came back to see on the computer screen: three submitted unchanged

Drink of water, press F5. WA / T / A. Ah, as expected. Said to be in the T3 is not an accident I am very happy.

Opening the list, go to the water almost erupted from the nose: what? So water can rank1?

The first reaction is to look at charts is not yet dead points lower ranked high or something, actually did not.

The second reaction is to look at the evaluation is not there a large Waiting. Oh, indeed yes. not worried.

I do not understand at the time why so did not want to rank1. I feel I answer this very water ah

But a look skyh, Dybala bigwigs and outside the school division has a whole still above me, a hint of moving, there is a trace of chuckle.

Coach: "Wu Di, and so will you look after the test chaired Topic"

Me: "When will, not a full minute of it."

Then, the question really is what I say! Very excited.

Second rank1 come so suddenly so baffling.

However, fun is normal, but later calmed down I can still tell there are a lot of deficiencies.

First of all I said above, there are still some points should not get.

Secondly face big round of skyh very stable but still 10 points lower than me, with my first two exams still leading with nearly 200 points

Why this time I took the test rank1 I would like to stick to the leaderboard before 7? I let myself see:

Although rank1, but how lucky you are, and your points difference behind in the end how small. Your position in the end how dangerous.

Finally, after all, it is to be counted out, instead of watching your every rank.

So, still, long way to go ah.

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Origin www.cnblogs.com/hzoi-DeepinC/p/11256883.html