摘要：
题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1712ACboy needs your helpTime Limit: 1000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3045Accepted Submission(s): 1581Problem DescriptionACboy has N courses this term, and he plans to spend at most M days on study. 阅读全文