摘要：
Biggest Number 时间限制：1000 ms | 内存限制：65535 KB 难度：4 You have a maze with obstacles and non-zero digits in it: You can start from any square, walk in the 阅读全文
摘要：
1551: Longest Increasing Subsequence Again Description Give you a numeric sequence. If you can demolish arbitrary amount of numbers, what is the lengt 阅读全文