题目2 : Professor Q's Software 时间限制:10000ms 单点时限:1000ms 内存限制:256MB 描述 Professor Q develops a new software. The software consists of N modules which are numbered from 1 to N. The i-th module will be started up by signal Si. If signal Si is generated mul…
时间限制:10000ms 单点时限:1000ms 内存限制:256MB 描写叙述 Little Hi runs a web server. Sometimes he has to deny access from a certain set of malicious IP addresses while his friends are still allow to access his server. To do this he writes N rules in the configurati…