题目链接: 232A - Cycles(点击打开) 题意: 要构成一个存在 \(k\) 个三元环的图,需要多少个点,输出顶点数 \(n\),并输出图. 题解: 题目中的任何图都可以用 \(90\)~ \(100\)个顶点构造完成. Proof that \(100\) vertices are always enough for the given restrictions on \(n\). - For some \(p\) after first \(p\) iterations we wi…
题面: You are given an array a with n distinct integers. Construct an array b by permuting a such that for every non-empty subset of indices S = {x1, x2, ..., xk} (1 ≤ xi ≤ n, 0 < k < n) the sums of elements on that positions in a and b are different,…
B. Looksery Party time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The Looksery company, consisting of n staff members, is planning another big party. Every employee has his phone number and…
Police Recruits Time Limit: 1000MS Memory Limit: 262144KB 64bit IO Format: %I64d & %I64u Submit Status Description The police department of your city has just started its journey. Initially, they don’t have any manpower. So, they started hiring n…
Problem I. Instruction 题目连接: http://codeforces.com/gym/100531/attachments Description Ingrid is a head of a big railway station and, among other duties, is responsible for routing trains to the right platforms. The station has one entrance, and there…
转载请注明出处: http://www.cnblogs.com/fraud/ ——by fraud System Administrator Bob got a job as a system administrator in X corporation. His first task was to connect n servers with the help of m two-way direct connection so that it becomes possible…
C. Nice Garland time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You have a garland consisting of nn lamps. Each lamp is colored red, green or blue. The color of the ii-th lamp is sisi ('R',…
On the way to school, Karen became fixated on the puzzle game on her phone! The game is played as follows. In each level, you have a grid with n rows and mcolumns. Each cell originally contains the number 0. One move consists of choosing one row or c…
