Readers, we present, the Ultimate Reading Comprehension Challenge! If you don't know what Reading Comprehension is, it's about you are given a passage, you read it and answer the question. Sounds neat, but this time we will something crazy! We'll g……

Hi, coders! I welcome you to LiShi Simulation Contest 3. Details of the contest: Tournament Time: 2020/2/13-2020/2/29 Place: Here Problem Count:3(100+100+100) Time: 1 Hour Difficulty: D2B-D2C Subtask: YES for all three problems! Characters: Ookami……

思考题 with anime Unlimited Fafnir After watching the famous anime Unlimited Fafnir, XGN got excited. So he decided to recreate the scene of fighting the Basilisk. This time, Yuu is going to do it himself. Let's suppose the world is a 2D plane. The……

2019-01-01 WN,ZKY,HDD,ZJS,XZM,XGN,HYK,ZXY,ZYD The First of HHS New Year Party. 2019-02-06 XGN The first HHS real 3D game Planet ZJS released 2019-04-04 XZM The blog site is up! 2019-04-14 XGN,SYR,JGH Orange Boy Can You Solve It Out? series starts 2……

思考题so late? Dazzit Again This is an easy version of OBCYSIO 28) You are given an integer sequence A of length N and another sequence B of length M. Then imagine a game: First, you choose exactly M different elements and arrange them, let's call ……

Hi, coders. I welcome you to Like Shiyan Simulation Round 2. This round will be held on OJ Essential. As usual, you can take any 1h of your spare time. Hints: 1. Problems: 4 (100-100-50-50) 2. Time: 1h 3. Difficulty: Around Div2D 4. 1 from Atcoder,……

It's gonna be 2020 Chinese New Year. Seems someone is going to send a gift. The 2020 STG! Warning: Play Touhou first before playing this Story In Gensyoku it's going to be the Lunar New Year. Reimu is going to invite Nazrin as one of the moscots. B……

Contest Link If you haven't read the problems or tried to solve it yourself, don't read this. A - Clock Difficulty: d2b Hint The hour hand of the clock moves 0.5 degree per minute, the minute hand of the clock moves 6 degree per minute. Then it tur……

思考题 for 2020 DuiLian 二十年飞花不尽 一几度落月无穷 九州同乐 Of twenty years, the flower never withers In one eternity, the moon forever remains Enjoy it together It's 2020 soon. It's time for the biggest holiday - The Yuandan and the Chinese Ne……

思考题 about cheating Lottery Cheating Let's have some lottery! In this lottery system, a number string S and an array of integers A is predetermined. It is known that |A|=|S| and let's define A_0=0. Each user chooses a number string T(|T|=|S|). Th……