http://codeforces.com/contest/472/problem/D D. Design Tutorial: Inverse the Problem time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output There is an easy way to obtain a new task from an old on…
D. Design Tutorial: Inverse the Problem time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output There is an easy way to obtain a new task from an old one called "Inverse the problem": we give…
C. Design Tutorial: Make It Nondeterministic time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A way to make a new task is to make it nondeterministic or probabilistic. For example, the hard…
B. Design Tutorial: Learn from Life time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output One way to create a task is to learn from life. You can choose some experience in real life, formalize it…
A. Design Tutorial: Learn from Math time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output One way to create a task is to learn from math. You can generate some random math statement or modify som…
Design Tutorial: Learn from Life time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output One way to create a task is to learn from life. You can choose some experience in real life, formalize it an…
题目背景 阿宝上学了,今天老师拿来了一块很长的涂色板. 题目描述 色板长度为L,L是一个正整数,所以我们可以均匀地将它划分成L块1厘米长的小方格.并从左到右标记为1, 2, ... L. 现在色板上只有一个颜色,老师告诉阿宝在色板上只能做两件事: "C A B C" 指在A到 B 号方格中涂上颜色 C. "P A B" 指老师的提问:A到 B号方格中有几种颜色. 学校的颜料盒中一共有 T 种颜料.为简便起见,我们把他们标记为 1, 2, ... T. 开始时色板上原…
最近手感有点差,所以做点水题来锻炼一下信心. 下周的南京区域赛估计就是我的退役赛了,bless all. Revenge of Fibonacci Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 204800/204800 K (Java/Others)Total Submission(s): 1582 Accepted Submission(s): 356 Problem Description The well-know…
