网址:https://cn.vjudge.net/contest/243309#problem/A You are given a set of n segments on the axis Ox, each segment has integer endpoints between 11 and mm inclusive. Segments may intersect, overlap or
OS: Mac OS X EI Capitan 当前PHP版本:5.6.30 升级后PHP版本:7.1.21 升级步骤参考:https://coolestguidesontheplanet.com/upgrade-php-on-osx/ 1. 安装新版本PHP(安装位置说明:https://php-osx.liip.ch): 打开terminal,运行:curl -s https://php-o