Day 0：
Actually bought the wrong ticket. . (RP--)
Test machine, the examination room feeling okay (although less than last year's examination room).
Exam suddenly flustered, but also a moment segment tree merge and differential constraints (and proved of little use).
Day 1：
7:40: The first time so early to the examination room.
Into the examination room after the first wave of written procedures to take (although the last did not use).
T1 a problem. Ten minutes the code finished, out of a large sample no control over the (self-confidence ++).
T2 at first glance: this problem I seem to have done? (Not).
Began to consider the situation in sequence, at the beginning of the set is $ dp_i $ $ i $ represents the number before the brackets program sequence, pushing for a long time did not launch.
$ Dp_i $ disposed Numbers in parentheses represent a legitimate sequence $ I $ end, can be found $ O (n) $ transfer (actually $ O (1) $ a).
After spending a half hour to think about how to optimize this transfer, however, did not find feasible method.
Time only half an hour, he had nearly been aware of the cold. He took a deep breath and calm mood, then looked at T3.
Ok? The T3 seems greedy directly on the line ah, it seems there is hope.
Ten minutes later: cold cold this greed is false (because it is not a full-delete option to delete).
Finally, I would rush out ten minutes to 10 minutes of violence T3, but finally could not get it.
In the afternoon a wave of self-test on major platforms:
oituku: 100 + 50 + 0, cow-off: 100 + 70 + 0, luogu: 100 + 95 + 0
If the data is found T2 water can get some more points, and my heart with the point of comfort (though others are readily cut T2).
Suddenly found ticket out of the examination room, and this year it really is so much to be a sign of an explosion.
Day 2：
Open question, will look at the T1, we found no idea directly jump to see T2 (is not panic).
T2 guessing conclusion: the size of each transfer point of the last recorded block, then $ n ^ 2 $ DP can.
Intuitively I feel a little fake, but it easily ran the sample, and then try to push a little slope optimization, found it impossible to deal with constraints (head smoked did not expect the decision to consider monotonic).
I went to looked at T3, the first to write a 40-minute violence. T1 feel a little nervous and go back and look at T1, at this time there are about a half hour.
T1 moment a sudden brain make a $ O (n ^ 2m) $ of the DP, the code finished forty minutes was found to be wrong. . Suddenly feeling has returned $ day1 $.
Finally, only the code finished T1 rush of violence leave $ 32 $ points, when submitted yet there is some pot (really more nervous the more chaotic).
32 + 64 + 40 = 136 self-closing, and also think of the examination room 64 + 64 + 55 = 183 to the. .
Check out the afternoon rush back to school, take the time almost forgot to pack (thanks to remind students of the same school), it seems not only intelligence, even the memory also degraded. .
to sum up:
After careful thought back to school this year in the end he is kneeling in the where.
Compared to last year, the situation does not appear to write bombing this year, allocation of time is also reasonable.
Feel the biggest drawback is that thinking is not precise enough, think of an algorithm began to write, finished only to find that wrong, resulting in wasted a lot of time .
Another problem is likely to be a dead end, there is always drilled hard in one direction, often neglecting their other ideas .
If $ day1 T2 $ I do not have to study how to optimize the transfer, but to ponder new transfer equation, probably would not be stuck in the $ T2 $ two and a half hours resulted in an explosion of mind, and even 10 points T3 are even violence It will never finish.
If $ day2 T1 $ I can think about the correctness of that $ dp $ equations, do not waste one hour of time to code a wrong code, perhaps there is time to write $ 64 $ 84 $ points points or $ code rather than rush to leave the code finished violence.
But this is not even a provincial election on it.
？？？
Quiet way back, and perhaps before long the school's computer room on only two of the bar. Next year, who would withstand the pressure of cultural studies, skipped school to the room that read the code empty during school holidays, in one night at the screen debug it?
Not to retire but almost retired written text, when is a period of high retirement (maybe not always?) School brother's feelings, anyway, next year our turn (maybe earlier?).
Like zcy said: We may not like OI this matter itself, but a group of like-minded people together, to do "even put their future at stake liked it, but also to do things."
Think simulation game finished nervous wait after evaluation, going to night classes uneasy when absent, foraging together in a rare happy holiday.
They play badminton in the hallway outside the room, a flashlight when power play room thunderstorm the night werewolf kill time.
Competition is not only caused by floating a few awards, these unique experience then why not a return?
不管最后的结果如何，只顾笃定往前走便是，生命的每一段，都不是浪费时间。