Description 题目描述 You are given an polynomial of x consisting of only addition marks, multiplication marks, brackets, single digit numbers, and of course the letter x. For example, a valid polynomial would be: (1+x)*(1+x*x+x+5)+1*x*x. You are required…

A Simple Math Problem Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2791    Accepted Submission(s): 1659 Problem Description Lele now is thinking about a simple function f(x). If x < 10 f(x) =…

Simple String Problem Recently, you have found your interest in string theory. Here is an interesting question about strings. You are given a string S of length n consisting of the first k lowercase letters. You are required to find two non-empty sub…

Description 题目描述 Recently, you have found your interest in string theory. Here is an interesting question about strings. You are given a string S of length n consisting of the first k lowercase letters. You are required to find two non-empty substrin…

FZU - 2218Simple String Problem 题目大意:给一个长度为n含有k个不同字母的串,从中挑选出两个连续的子串,要求两个子串中含有不同的字符,问这样的两个子串长度乘积最大是多少? 根据题目所给的k<=16很自然的想到用状压dp来处理,但不知道该dp个什么,在观摩大佬的做法后才明白.我们用0000000000000000到1111111111111111表示pomnlkjhgfedcba的字符存不存在的状态,某个字符存在的话对应位就是1,反之就是0.一开始dp[x]就表示,…

比赛时没做出这题太可惜了. 赛后才反应过来这就是个中缀表达式求值,数字栈存的不是数字而是多项式. 而且,中缀表达式求值很水的,几行就可以搞定. #include<cstdio> #include<cstring> #include<algorithm> using namespace std; struct Poly{ ]; Poly operator+(const Poly &p)const{ Poly np={}; ; i<; ++i){ np.a[i…

一起啃PRML - 1.1 Example: Polynomial Curve Fitting @copyright 转载请注明出处 http://www.cnblogs.com/chxer/ 前言:真是太糟糕了,本地的公式和图片粘上来全都喂汪了... We begin by introducing a simple regression problem, 用一个例子穿起这些零碎的知识点. 回顾最前面的Mathematical Notation: A superscript T denotes…

3489: A simple rmq problem Time Limit: 40 Sec  Memory Limit: 600 MBSubmit: 1594  Solved: 520[Submit][Status][Discuss] Description 因为是OJ上的题,就简单点好了.给出一个长度为n的序列,给出M个询问:在[l,r]之间找到一个在这个区间里只出现过一次的数,并且要求找的这个数尽可能大.如果找不到这样的数,则直接输出0.我会采取一些措施强制在线. Input 第一行为两个整…

http://acm.hdu.edu.cn/showproblem.php?pid=4976 2014 Multi-University Training Contest 10 1006 A simple greedy problem. Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 20    Accepted Submission(s…

p.MsoNormal { margin: 0pt; margin-bottom: .0001pt; text-align: justify; font-family: Calibri; font-size: 10.5000pt } h1 { margin-top: 5.0000pt; margin-bottom: 5.0000pt; text-align: center; font-family: 宋体; color: rgb(26,92,200); font-weight: bold; fo…