摘要：
#题面 Problem Description There is a strange lift.The lift can stop can at every floor as you want, and there is a number Ki(0 ⇐ Ki ⇐ N) on every floor. 阅读全文
摘要：
##题面 Problem Description Given a specified total t and a list of n integers, find all distinct sums using numbers from the list that add up to t. For 阅读全文