2015 sixth annual Blue Bridge Cup National Software Competition (Preliminary) Summary

It's the first time I've written a spontaneous summary since I went to college, which may mean that my view of the university and the rest of my college life will change. First of all, to guide me to write this summary of the "characters" bar, RUI, from a freshman is a classmate, until junior became a roommate. His grades have been very good, if I remember correctly, freshman professional first, sophomore seems to be the first and second, in short, in the class has been ranked in the top, in the study results inside, the most I envy is his English, four and six is a one-time, and, six test 500 more points (specific how many remember not clear), uh ... In addition to good academic performance, professional ability is not to say, in freshman joined the Institute of ACM Laboratory, programming ability that is step by step, until now become my eyes of the programming God. In the human aspect, is also very low-key, do things steady, not disorderly talk, have their own ideals, and towards their dreams have been struggling (just yesterday also because made a poster made 200 bucks, eh). From him, I learned a lot, is my university's little teacher, good, that about Rui first said this.

April 10, poof, puff, mouth has been in the long breath, thinking, tomorrow is Blue Bridge Cup province, looking at the code he has done, in addition to the end, or no bottom. Night to the dorm 10 o'clock the whole, back to the dorm, and roommates to carry out a simple conversation, ask who did not, what to do, and then undress, wash, look and usually no different, but the heart is indeed a big stone. After a while, Rui back, and began the single cycle diamond Zhang the first "Peony flower open", I was also drunk (Diamond Zhang is his favorite good voice students). For a while I took the basin to do rui bed side, while washing feet, while watching Rui familiar with the common C + + code, there are greatest common divisor, sieve method for prime numbers, generate random numbers, I look at the side and he discussed, hope to be as much as possible to take a little more, for tomorrow's provincial races to increase a little chance, Although the level of basic has become a foregone conclusion, but still want to find the heart comfortable. Oh, yes, halfway, Rui. The last time I took a photo of the ACM school game, there were a lot of scenes inside of me that made me very happy. Because this evening is Friday, so lights out late, 11 points 50 lights out, but I still climb the bed early, ready to rest early, for tomorrow's provincial races ready. Soon the kung fu went to sleep, morning up only remember last night in the brush Weibo ...

April 11, because I set the alarm clock is 6 points 20, so I was the first in the dormitory, up after the stomach is not very comfortable, then went to the toilet (I do not know because of the tension, or because of the bubble noodles last night). Convenient later, or old routines, wash your face and brush one go, the next is to wear clothes, would like to wear casual pants, also do not remember what I thought, just put on the pants off, replaced by jeans. Wash finished, pack good things, roommates (this Blue Bridge Cup our dormitory has 3 people to participate in, in addition to me and Rui, there is Mao) speed is not slow, also basic pack up, then set out, then it is about 7 points. To the dorm downstairs, yingming and Hao are waiting for us, we go to the restaurant, eat together, I, Rui,mao are eating fornicated sesame, Hao as always eat his 3 eggs and 3 buns, there is a bowl of millet gruel, have to say, eat enough, anyway, I was eating. After the meal, 6 of us (and a female classmate, Xiaomei) set out to the teacher's meeting place, where the teacher called more than once to ask where, well, until the end we were 5 minutes late.

Finally gathered with the teacher, there are two teachers, 1 is Feng teacher, and the other 1 is LU teacher (he taught us C + + in a big semester, is a very good teacher), just met when the heart is not very comfortable, let two on the old teacher and so we a few young, it is not supposed to, fortunately, the teacher is very good, nothing said , Go straight! Because of the distance from the meeting place to the bus stop, the teacher and the students were also talking and laughing on the way. I still remain silent in most cases, because neither of these teachers is my mentor (the Blue Bridge Cup needs to be assigned to the instructor), although the teacher is not so obvious, but my sensitive nerves still imply that I need to speak less. Which Yingming inadvertently said a sentence why now is our 5 people, Lou teacher then went on to say a sentence, Tongbin is with Mao a up, eh, instant heart very not taste. Soon, after we crossed the Vientiane city, arrived at the place of the sign, said also coincidentally, just have a bus of 33 road, just drove away, after responsible yingming "brave block car", the bus unexpectedly stopped, we also successfully sat on to Ludong University's 33 road car, saved the waiting for 10 minutes. In the car, and Lu teacher next to Hao next to each other, Lu teacher first and I said a few words, which said, Tongbin is still in the chair Ah, I was also happy and sad, hi is in the teacher's eyes I am still more capable of, I think I can be competent president, SAD is I have been the Vice Ah, In the joke between a pen, in fact, how I want to say sorry to you, in the freshman time do not listen to your words, to your text messages and telephone ignored, so that I now regret and regret.

About 8 points around 15, our line of people arrived at the West campus of the Ludong University of Simon, the car will be responsible for the competition (students) to guide us to the examination Room (Shaw Library), soon arrived at Yi Fu Lou, because we are going to the relatively late, many sophomore students have been ahead, go to the walk a lot of hoops, At this time the teacher proposed to take a photo, in the mind very want to close but also afraid of guidance teacher is not their sake, is not very active, fortunately, teachers are very active, directly shout the name, say how to shoot, I also instantly not timid, decisive and they stood together, took a group photo, which has a special junior group photo, and a group photo of the sophomore 31. After the group photo, we joined together to introduce the examination room, the examination room is mostly on the 5 floor, I am 506, some in 508 and so on, eh, here is a small episode, Hair shoe cover when my shoe cover too small belt, is drunk, fortunately, is not so strict requirements, eh, my feet is how big.

Ah! Finally into the computer room, a large classroom about 100 machines, may be due to the tension, the instant ran to the toilet, after some thunder and lightning, it is really cool a lot. My camera number is number 70th, when I sit down the game has not started, I am in the e-disk knocking on the common code (greatest common divisor, sieve method to find prime numbers, etc.), and I also open the Dev programming environment to test, so as not to avoid software failure, can not run dumbfounded. Soon, 9 points, the game officially started, first click on the website to download the test questions, enter the password after the decompression test, and then began to do the problem. (I'll say a few words about my problem-solving process). First is the first question, when just see this question is feeling relatively simple, but in order to prevent the pit to read more than a few times, it is very simple, from 10000-99999 minus 4 of the number, I used a very simple 5 heavy cycle to solve; Next is the second problem, called the Galactic Bomb, look at the name is very scary, After I read test instructions found it is a very simple date calculation problem, to a fixed date, calculate after how many days, the date is how much, actually I have a lot of short board, one of which is the programming of the date class is helpless, afraid of error, so I simply do not program, directly with the hand calculation, because it is 1000 days, Also not how big, compared to the programming, should be hand calculate relatively fast, after my "earnest hand calculate", and consider leap year situation, get Out is 2017-08-05 (remember wrong words); OK, then next is the third question, called "Three sheep offer Rui", I smoke out of the core test instructions is to give an addition formula, and give some of its features, and finally let you program to calculate the second addend, I was the first idea is that I have done this similar topic, all follow their own ideas go, because the formula appeared in 8 different numbers, so decisively thought of the 8 cycle, the content of the loop, the condition of the judgment is the problem given by the formula , if not mistaken, the result is 1085. After these 3 questions, the heart is still more happy, in the mind, this time I am afraid I do blue Bridge Cup really the most smooth once, it seems to spend less than 50 minutes or 40 minutes, remember not clear.

The next step is not optimistic, it is a code fill in question. The first call "lattice output", is the output of a string in the middle of a lattice, in fact, the code given is generally not difficult, but let the fill in this place but let me Zhang two monks, not touch the mind, printf ("%*s%s%*s,__________"); This can be filled, Thought that would be blindfolded, first blindfolded ', buf, ', not, and Width-strlen (BUF), buf, ', or not, and then give up, do the next question. This question is nine array fraction, test instructions is 1,2,3...9 these nine numbers make up a fraction, its value is exactly 1/3, how is the group method? , see the code, I know this is in the recursive function to fill in the code, I am unfamiliar with recursion, thought this can be finished, to tell the truth, the code really did not read, no way, endure pain, skip this problem, continue to see the topic. The next problem is called "addition to multiply", given 1+2+3+...+49=1225, now requires two of them are not adjacent to multiplication sign, making the result of 2015, at this time thinking, compared to the front of the 3 questions, the logic of the problem is obviously more complex than they, but they have not been frightened, After all, is the result of the question, my train of thought is 1-49 and divided into 5 parts, sum1,pro1,sum2,pro2,sum3, and then use a double cycle, will solve the problem, in fact, did not do at first, the result is 6 28, only this group of solutions, obviously wrong, Because the problem is given a set of correct solution is 10 27, because in this problem spent too much time, I fear that time will not be enough, so no more time to do the next problem, until later when the examination was found in the calculation of sum2 when a small error occurred, sum2 = (i+2+ J-1) * (j-1-i-2+1)/2; After changing to the above statement, the program runs correctly, resulting in two sets of solutions, one set is 10 27 of the topic given, and the other is 16 24 (of course, the topic only lets commit 16). As for the later 7th and 8th, I spent a lot of time, but really naught, did not think of the solution, so far, 8th and 9th are just read the topic only, and did not think how to do, then go back to check before the topic. Mainly those two code blank questions, until the end also did not how to come to an accurate answer, hey, thought this time may be only 4 questions, this is not an accident.

Soon, 13 arrived, the online stop the answer to the submission, the sixth session of the Blue Bridge Cup to the end of the game. The heart gives birth to a few words, the skill is inferior to the person, the resentment cannot others. Pack things, will do their own source code copied to the U disk (oneself did not bring, with Mao's), then went out to the toilet (right, there is also a small episode, the race halfway through the toilet, a bunch of people in the toilet in the brim, are holding the cell phone, everyone still murmuring, do not know what is busy, I am also afraid of causing trouble, after the toilet, hurried to the examination room, and then and other people and teachers gathered, listening to their discussions on the topic of the problem solving methods, they are really plugged in the mouth, after all, and others are not a level ah! Then, is waiting for the bus, car, and then very smoothly to the Kang-Hui company station, and then walked back to the school, everything is so common, but at this time in the dialogue with Rui, I got an important message, is the code to fill in the second question I was right, I will be the last line of two number of exchange code directly copied I did not expect to be right, this makes me happy a bit!

Soon, this day is nearing the end, from the laboratory to take the computer to the dormitory, recalled from last night to the present, can not tell the feeling, both enrich, and feel pity. Beijing, such a big long have not been to, really want to see, after all, it is the capital, is the heart of the country, there are too many yearning for Beijing, Peking University, Tsinghua, Tiananmen Square, Bird's nest ... Eh, I use two years to change my present degree of sensible, perhaps, is also worth ...

2015 sixth annual Blue Bridge Cup National Software Competition (Preliminary) Summary