剑锋OI SharpSwordOI

时间限制：1S / 空间限制：256MB 【在线测试提交传送门】【问题描述】 Petya learned a new programming language CALPAS. A program in this language always takes one non-negative integer and returns one non-negative integer as wel

时间限制：1S / 空间限制：256MB 【在线测试提交传送门】【问题描述】 Sherlock has a new girlfriend (so unlike him!). Valentine's day is coming and he wants to gift her some jewelry.He bought n pieces of jewelry. The i-th piece

时间限制：1S / 空间限制：256MB 【在线测试提交传送门】【问题描述】 Our beloved detective, Sherlock is currently trying to catch a serial killer who kills a person each day. Using his powers of deduction, he came to know that