Programmer Group

meaning of the title Divide n numbers into several groups. The minimum number in each group cannot be more than the total number of elements in this group. Find the number of schemes. N<=2000.   Reflection If we get a partition of n numbers, we can simply find out the number of schemes. After sorting it from large to small, let larger I ...

       Python : 3.7.3          OS : Ubuntu 18.04.2 LTS         IDE : pycharm-community-2019.1.3       Conda : 4.7.5    typesetting : Markdown   code_1 """ @Author : Xing Xin @Date : 2019/7/2 @Blog : www.cnblogs.com/xingchuxin @Gitee : gitee.com/zhichengjiu """ def main(): # The final value is 9 end_num = 9 # Row cou ...

Problem surface LOJ Title Solution First of all, there is an obvious conclusion that the edges that do not need to be modified can be deleted directly, and the edges that need to be modified can be reserved. The white dot is that the number of times each edge is to be visited can be directly modeled as two. If an edge is proved to be connected ...

1. Install gcc-c++, tcl yum install gcc-c++ tcl 2. Decompress, compile and test tar zxvf redis-5.0.5.tar.gz make make test 3. Install to / opt make PREFIX=/opt/redis/redis-5.0.5 install # Create a soft chain ln -s redis-5.0.5 latest 4. Configuration file. There is an example redis.conf in the source file directory. T ...

1. Attribute of class and attribute of class object class Parent(object): a = 'a' b = 1 def __init__(self): self.a = 'A' self.b = 1.1 def print_info(self): print('a = %s , b = %s' % (self.a, self.b)) @staticmethod def static_test(self): print 'a static func.' ...

I. environmental preparation Main: 192.168.132.121 From: 192.168.132.122 There is data on the main database, and it is still being written. mysql> select * from darren.test; +------+ | id | +------+ | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | +------+ mysql> grant replication slave on *.* to 'replication'@'192 ...

Change from: https://blog.csdn.net/xukai871105/article/details/53516857 PrefaceThis article will show how to set the interrupt priority of STM32 Cortex M3 and M4 Series MCU in FreeRTOS embedded operating system.summary [1] STM32L1 series, STM32F1 series and STM32F4 series. NVIC? Prioritygroup? 4 is required when setting NVIC. [2] the priori ...

Bubble sorting is one of the simple sorting algorithms. By comparing two adjacent elements, when the first element is larger than the second element, the first element is moved back (ascending, similarly, descending). After each sorting, there must be a maximum or minimum value at the end. First bubble sort 1 static void BubbleSort ...

Simple multithreaded applet code implementation: 1. Write a program to print out "I am a programmer" letter by letter by multithreading cooperation. The string has array storage of char type.   import static jodd.util.ThreadUtil.sleep; public class CharNum { static String str = "i am a programmer"; String[] str1 = ...

Use the System.Collections.ArrayList.Sort() object array to customize sorting   Its core is the implementation of comparator, which is a class. It inherits the IComparer interface and implements the int IComparer.Compare(Object x, Object y) method. This method implements the comparison method of custom sorting. It can sort the object array di ...