摘要：
Given a sequence of N pairs of integers, find the length of the longest increasing subsequence of it. An increasing sequence A1..An is a sequence such 阅读全文
摘要：
Little Artem has invented a time machine! He could go anywhere in time, but all his thoughts of course are with computer science. He wants to apply th 阅读全文
摘要：
几何题，希望有时间回来解决掉。 阅读全文
摘要：
In this problem you will meet the simplified model of game Pudding Monsters. An important process in developing any game is creating levels. A game fi 阅读全文