In total, some 5,000 people work in Antarctica during its summer months, across 80 research stations operated by about 30 countries.
Мир Российская Премьер-лига|19-й тур
。关于这个话题，WPS官方版本下载提供了深入分析
The protection problem
This story was originally featured on Fortune.com
I used cnfgen to generate SAT instances using the following command: