Day1
The night before the board a lot of brush, saw a few questions backpack, feeling relatively well prepared to go after, Guoji boat sitting next to me, I read the board edge side knock quick chat with him, came suddenly behind a person to bring it to the U disk computer copy the title, my heart was not prepared, do not unified title issued it? Open face a problem, instantaneous heart rate, the three questions read it again, they begin to liver T1,10 minutes to come up with practice, I did not expect to finish the code after the nightmare has only just begun, the original plan was to get in 30 minutes T1, not because I actually wrote a tune left shift overflow problem more than an hour. I put a large sample out in the past, we have been 10:10, and I have to curse. Hurried look at T2, how count the number of legal brackets string? Like a long time O (n) practice, I thought out, hastily wrote the n- 2 , and had a large sample. But this tree can live data 2000 do? I quickly put the trees have just written practice transferred to the chain, thinking that there is no problem. Look T3, totally do not, the whole arrangement enumeration of violence did not write out the last five minutes to die altogether, so I an examination room, I suddenly found a problem with the chain T2 practice, expect 50 points from the score immediately become only 15 minutes, eating mood is gone, Day1 so exploded.
Day2
A look at the title, but also to force the ignorant, T1 backpack or person to do it? T2 What the hell? T3 seems to have 40? Exam backpack can not see white, the liver over one hour T1, still nothing, the sample is too small, and make life difficult for large sample life and death, T2 wrote a greedy no protection, not any large sample past, T3 of 40 points finally written, in retrospect T1, without thinking, the next day so ended my career OI also such an end, a bitter defeat, hope next year to make up regret it.