YoungForest's blog

The recap balances bucket upgrades against water-filling rounds, then distributes a bounded connected colouring across a binary tree.

Three solutions determine a product sign, solve a Josephus circle, and use bottom-up DP for minimum side jumps; the fourth is unfinished.

Five problems move from budgeted pairs and a spiral orchestra layout to greedy reordering, a changing maze, and batched tasks.

Solutions truncate a sentence, deduplicate active minutes, minimize absolute difference, and record a subsequence-GCD approach that timed out.

Four solutions use board parity, sentence-end matching, reversed-value differences and memoized remainder states, followed by a rejudge correction.

Auto daily health report solution for BUAA.

Four solutions deduplicate integers, track a permutation reset, replace bracket keys by lookup, and maximize a product by splitting a fixed total.

How to reach a remote server through a jump host using SSH ProxyJump or port forwarding.

Three contest solutions handle ascending runs, order backlogs and a bounded peak; a post-contest binary trie counts XOR pairs in a range.

How my investing journey began, what changed my thinking, and the lessons that still shape it.