摘要:
There is a company that has N employees(numbered from 1 to N),every employee in the company has a immediate boss (except for the leader of whole compa 阅读全文
摘要:
Mayor's posters Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 74745 Accepted: 21574 Description The citizens of Bytetown, AB, could not s 阅读全文