Daily_CF_Problems

Main Activities (Daily)

• Update 2 Codeforces problems with different difficulty everyday except Sunday in the file daily_problems/${YYYY}/${MM}/${MMDD}/problems.md with hints.

• Update the solution to at least 1 of the 2 problems in the file daily_problems/${YYYY}/${MM}/${MMDD}/solution/${problem_code}.md.

• Categorize the problems by their used methods in the file categories/${method}.md.

How to join

• Upload your solution in the folder: daily_problems/${YYYY}/${MM}/${MMDD}/personal_submission.

• Remember to name your submission code file ${problem_code}_${your_name}.{py/cpp/...}.

• Also, when creating a pull request, please title it ${YYYYMMDD} ${INFO}.

Statistics

Here are the current statistics of submissions: Link.

Today's Problem

Difficulty	Problems	Hints	Solution
1800	CF89A	How many diamonds should you move if you take out one of them?	Editorial
1900	CF685B	If $v$ is the son of $u$ with the subtree of the largest size, the centroid of the subtree of $u$ is also an ancestor of the centroid of the subtree of $v$ .	Editorial