This is the first time to participate in the competition field, plus, in recent years rarely go to Beijing, so really looking forward to this opportunity to go to Beijing to attend the game.
Because the school is quite far away from Beijing, we can only go by train. Very long time on the train, I can with the students, seniors / sister, teacher led chatting to pass the time.
For some reason, I led and teachers are not very familiar with, but he always wanted to know at this time is a good opportunity -
To Beijing, Beijing is still bustling, but the first time to a slightly different feel.
Game day, there are a few seniors in the morning examination, based on their feedback, we learned that the Blue Bridge Nations Cup tournament title added to the 10, five fill in the blank, five big questions. This is an opportunity and a challenge. .
Before noon, the teacher asked us dined at the hotel, the food was delicious, northern flavor, not spicy finish very comfortable. To the examination room inside, very hot, did not have air conditioning, but still have to do a good Jing Xiaxin question, Ambassador of female teachers is also very good, I did not see the water, he handed me a bottle, ha ha ha ha ha refills.
Finally finished out of the examination room, realized that, ah, own at least two questions wrong, and thought he would go home empty handed, I did not expect was the last achievement second prize upstream. If the examination process, more stable, focusing on basic skills, prize or no problem.
Introduced under the title encounter
First, the value of solving the most violent, for answers to solve the loop 7020 (score 5)
Second, the 2019 can be expressed in the form of a plurality of different numbers and quality, such as 2 + 2019 = 2017, without regard to the order of (2017 + 2 and 2017 + 2 are the same), please state the number of all programs. (Score 5)
This question yourself reading the wrong question, only requires that it be divided into two prime numbers ok, filling therefore the answer 1. Back to the hotel after thought, if he did not misread the title, should also not make, the first reaction is a knapsack problem, but can not solve the problem of repetition primes
Three, dfs number labyrinth path output answer 206 (10 score)
The question is very simple, it is best to print out a path under inspection
Fourth, find the minimum number of 100 containing violence 45360 factors (score 10)
Fifth, the output lattice stitching program (score 10)
With a title like the previous Zhenti, but this problem needs to be converted into a graphic divided into symmetrical about the diagonal
Sixth, from a character string is extracted several characters, which can be modified during character, to make it into a string b. Q. minimum number of modifications
Seven,
Eight
Nine, Eight Wonders
Methods do it yourself, with a heap segment tree maintenance, if the last successful commissioning, the first prize is a certain steady. Too little training, transfer segment tree on the board for nearly forty minutes.