https://codeforces.com/contest/1236/problem/B Alice got many presents these days. So she decided to pack them into boxes and send them to her friends. There are nn kinds of presents. Presents of one kind are identical (i.e. there is no way to disting…
Matrix Power Series Time Limit: 3000MS Memory Limit: 131072K Total Submissions: 20309 Accepted: 8524 Description Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 + … + Ak. Input The input contains exactly one test cas…
小明系列故事——师兄帮帮忙 Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 3502 Accepted Submission(s): 894 Problem Description 小明自从告别了ACM/ICPC之后,就开始潜心研究数学问题了,一则可以为接下来的考研做准备,再者可以借此机会帮助一些同学,尤其是漂亮的师妹.这不,班里…