摘要: 1067 - Combinations PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB Given n different objects, you want to take k of them. 阅读全文
posted @ 2016-03-31 20:50 sCjTyC 阅读(314) 评论(0) 推荐(0) 编辑