摘要：
Rare OrderTime Limit:3000MSMemory Limit:Unknown64bit IO Format:%lld & %llu[Submit] [Go Back] [Status]DescriptionRare OrderA rare book collector recently discovered a book written in an unfamiliar language that used the same characters as the English language. The book contained a short index, bu 阅读全文
摘要：
The Broken PedometerThe ProblemA marathon runner uses a pedometer with which he is having problems. In the pedometer the symbols are represented by seven segments (or LEDs):But the pedometer does not work properly (possibly the sweat affected the batteries) and only some of the LEDs are active. The 阅读全文