cf之路,1,Codeforces Round #345 (Div. 2) ps:昨天第一次参加cf比赛,比赛之前为了熟悉下cf比赛题目的难度.所以做了round#345连试试水的深浅..... 其实这个应该是昨天就写完的,不过没时间了,就留到了今天.. 地址:http://codeforces.com/contest/651/problem/A A. Joysticks time limit per test 1 second memory limit per test 256
1 集体智慧和协同过滤 1.1 什么是集体智慧(社会计算)? 集体智慧 (Collective Intelligence) 并不是 Web2.0 时代特有的,只是在 Web2.0 时代,大家在 Web 应用中利用集体智慧构建更加有趣的应用或者得到更好的用户体验.集体智慧是指在大量的人群的行为和数据中收集答案,帮助你对整个人群得到统计意义上的结论,这些结论是我们在单个个体上无法得到的,它往往是某种趋势或者人群中共性的部分. Wikipedia 和 Google 是两个典型的利用集体智慧的 Web
CF memsql Start[c]UP 2.0 A A. Golden System time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Piegirl got bored with binary, decimal and other integer based counting systems. Recently she dis
CF memsql Start[c]UP 2.0 B B. Distributed Join time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Piegirl was asked to implement two table join operation for distributed database system, minim
E. Sign on Fence time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output Bizon the Champion has recently finished painting his wood fence. The fence consists of a sequence of n panels of 1 meter w
Could not load file or assembly 'MySql.Data.CF, Version=6.4.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d, Retargetable=Yes' or one of its dependencies. The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047 I so
Freelancer's Dreams time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mikhail the Freelancer dreams of two things: to become a cool programmer and to buy a flat in Moscow. To become a cool p