摘要: Problem DescriptionThere is an integeraandnintegersb1,…,bn. After selecting some numbers fromb1,…,bnin any order, sayc1,…,cr, we want to make sure tha... 阅读全文
posted @ 2015-08-09 09:39 pb2016 阅读(160) 评论(0) 推荐(1) 编辑