• ## Orange Boy Can You Solve It Out? Ep. 37

思考题 with song 75 There have been 73 heroes failing to rescue the princess, and the 74-th was killed by the princess. As the 75-th knight, you decided to become stronger so that you would survive the princess's attack. You are given a directed g……
XGN 2020年2月26日
• ## LSS 1-3 Statistic & Conclusion

LSS 1-3 has ended! If you don't know, it's a contest focused on fast hand speed. The problems are usually easy and neat with simple concept. Here are some results: Problem Tag Tag LSS1 LSS2 LSS3 A math math implementation B math dp dfs & s……
XGN 2020年2月23日
• ## LSS 3 Announcement & Editorial

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……
XGN 2020年2月13日
• ## Orange Boy Can You Solve It Out? Ep. 36

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……
XGN 2020年2月10日
• ## Orange Boy Can You Solve it Out? Ep. 28.5

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 ……
XGN 2020年2月6日
• ## LSS 2 Announcement & Editorial

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,……
XGN 2020年2月4日
• ## LSS 1 Editorial

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……
XGN 2020年1月16日
• ## Orange Boy Can You Solve It Out? Ep. 35

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……
XGN 2019年12月31日
• ## Orange Boy Can You Solve It Out? Ep. 34

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……
XGN 2019年12月10日
• ## Orange Boy Can You Solve It Out? Ep. 33

思考题 Times A shadow pokemon! Recently the famous game Pokemon SwordString was released. XGN, one of the biggest fan of Pokemon, decided to have a try. In each battle, your Pokemon can be seen as a string A and the enemy can be seen as a string B.……
XGN 2019年12月9日