思考题 greedy? SMM Have you ever played Super Mario Maker (2)? There's an interesting mode called Endless Challenge. Let's look at a simplified version: The game contains N levels. The player plays from level 1 to level N in order. In Level i, ther……

思考题 long ago Chess Ninetail and Doragon are playing Global Chess on a chessboard with N*M grids. The left-upper corner is (1,1) and the right-lower corner is (N,M) The Global Chess goes as follows: Each player has some soldiers. Ninetail plays ……

Hi, coders! I, XGN, welcome you to LSS 4, the super easy contest. Contest Detail: Start at 2020/3/2 and deadline is the weekend after English Extra Exam is finished. Contest Duration: 1h Problem Count: 4 Score Distribution: 50+50+100+100 Difficult……

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……

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……

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……

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,……

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……