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多校1——Add More Zero（大水题）
Add More Zero There is a youngster known for amateur propositions concerning several mathematical hard problems.Nowadays, he is preparing a thought-provoking problem on a specific type of原创 2017-07-27 20:19:53 · 389 阅读 · 0 评论 -
多校 ——Balala Power!
Balala Power!Talented Mr.Tang has nn strings consisting of only lower case characters. He wants to charge them with Balala Power (he could change each character ranged from a to z into eac原创 2017-07-27 20:32:22 · 399 阅读 · 0 评论 -
KazaQ's Socks
KazaQ's SocksKazaQ wears socks everyday.At the beginning, he has nn pairs of socks numbered from 11 to nn in his closets. Every morning, he puts on a pair of socks which has the原创 2017-07-27 20:53:29 · 411 阅读 · 0 评论 -
Is Derek lying?
Is Derek lying? DeriiiDerek and AlfiAlfia are good friends.DerekDerek is Chinese,and AlfiaAlfia is Austrian.This summer holiday,they both participate in the summer camp of Borussia Dortm原创 2017-07-27 21:08:59 · 202 阅读 · 0 评论 -
Regular polygon
Regular polygon On a two-dimensional plane, give you n integer points. Your task is to figure out how many different regular polygon these points can make.InputThe input file consi原创 2017-07-28 07:43:58 · 604 阅读 · 0 评论 -
Two strings 2017 多校 9 J
Two strings Giving two strings and you should judge if they are matched.The first string contains lowercase letters and uppercase letters. The second string contains lowercase letters原创 2017-08-23 10:03:29 · 204 阅读 · 0 评论 -
Array Challenge 2017 多校10 矩阵快速幂
Array Challenge There’s an array that is generated by following rule.h0=2,h1=3,h2=6,hn=4hn−1+17hn−2−12hn−3−16And let us define two arrays bnandan as below. iibn=n+1hn+9hn+1hn−1+9hn2+2原创 2017-08-27 20:35:02 · 316 阅读 · 0 评论