链接：https://www.lucien.ink/go/UPC5528/题目：题目描述Ivica is a passionate computer scientist. He recently started working on his first computer game: a clone of the popular Tetris. Although he’s far from b...
链接：http://exam.upc.edu.cn/problem.php?id=5529题目：题目描述Recently, there has been a breach of user information from the mega-popular social network Secret Network. Among the confidential information are...