这个人很懒,暂无签名信息
原文地址:https://www.19lou.com/forum-111-thread-18791510563032268-1-1.html?qq-pf-to=pcqq.c2c&qq-pf-to=pcqq.c2c9月底在西湖区买了套房,今天足不出户,3小时搞定水电煤气过户手续,包括打电话打听的时间。准备工作:①知晓房屋坐落地址;水、电、燃气的各户号、原户主的名字(这些可以在支付宝支付绑定的时候看到...
原题: Given two integers n and k, find how many different arrays consist of numbers from 1 to n such that there are exactly k inverse pairs. We define an inverse pair as following: For ith and jth ele...