背包 题目列表 Knapsack 2 Earn or Unlock [ABC221G] Jumping sequence [ARC104D] Multiset Mean Lorry [ABC056D] No Need Addition on Segments [BalticOI 2010] Candies (Day2) [ARC096F] Sweet Alchemy Deja Vu [NOI2020] 制作菜品 PermuTree (hard version) Hyperrectangle [GXOI/GZOI2019] 旧词 Journey Byteland coins [NEERC 2017] Knapsack Cryptosystem Sum Knapsack Knapsack Queries on a tree [ABC269G] Reversible Cards 2 [ICPC 2022 Jinan R] DFS Order 2 AB Tree