School Competition essay

School Competition essay

I went to the school Competition [12th Fujian Normal University Program Design Competition], got six questions, wrote an article to record it (pianjingyan )...

It was held on FZOJ. Currently, I cannot see the question on FZOJ. I don't know if it will be released...
Zhong Liang's question is related to fat brother...
Note: This article only records the process and describes the ideas, and does not post code (because you are too lazy to repeat it ).

A. As and Bs

1A2B guess a digital game. If you have never played it, you can play it on this online website.
I have already encountered two questions in this game. Previously, the question was from the ultraviolet () system. I remember writing a question.
This question refers to the process of giving guesses. There are several possibilities for a correct answer.
You only need to (10*9*7*6) = 5040 kinds of brute force attacks.

B. Bloody Chocolates

Let's talk about the idea of fighting evil with the brave in Chapter 1 of the big white. But you have to find the inner circle of the triangle.
Lyj friends can see in minutes that 1A is correct.

C. Curse of Labyrinth

Not read...

D. Dodgeball

Question: a few balls are moving in a rectangular table, with four 45-degree directions. When a wall bounce occurs and the target is not moving somewhere, ask the ball how many times it hits the target during the specified time. Note that the ball motion is independent.
This is the last question. I tried to simulate the trajectory of each ball every second. If the transaction times out, you can see that T can reach the 1e9 size. At this time, there were only 10 minutes left, and then I thought about this question nervously. Later I found that I could consider repeating the section and I just changed it.

E. Eleven

Give some numbers and calculate the number of solutions that are multiples of 11.
The first thought was digital DP, indicating that I had never practiced it, so I ran it on one side, and I didn't have it on the other... Complete it later.

F. Fat Brother the Great

This is a particularly speechless question. I did not notice the water question when I was reading this question. I found that many people had passed the question before discovering it...
Find all the "Fat Brother" in this question, and it is always wrong to use ctrl + f of IE, I carefully read more than five times of questions--(I also had question A during the period) and found that the search function of IE is case-insensitive by default! I'm totally disappointed with IE!

G. Get the Points

This is a high-quality question we have made.
Select any number of targets to be shot in n targets. Each target score is calculated as follows: No ai is available next to each target, bi is available, and ci is used in both of them. The score is the final calculation.
After reading the example, I thought that a <B <c, happily knocked out the greedy packet and found wa.
At this time, we found that abc is not necessarily increasing. We have discussed it with zyw. We have implemented a three-dimensional dp, where dp [N] [2] [2], the maximum score of the first I and the last two States is known, and then it can be recursive.
Have to worship zyw big orz...

H. Hou Palace

It indicates that you haven't seen it...

I. It's Your Race

Or a water question, just find the line with the largest.

J. Japanese Maid

I am very interested, but I still don't understand it...

He was well abused by fuda, but this time he was satisfied and he had to exercise more in the future.