2013年10月6日
Necessary Coins
摘要： DescriptionVasya has been on vacation on Mars. He's a big fan of foreign coins, and thus has collected exactly one martian coin of each denomination, for a total ofncoins:a1martian dollars,a2martian dollars, etc,anmartian dollars. Unfortunately, he couldn't stand ordering the Pan Galactic Ga 阅读全文
posted @ 2013-10-06 23:55 _log__ 阅读(253) 评论(0) 推荐(0)