#include<iostream> #include<stdio.h> using namespace std; int main() { //freopen("test.txt","r",stdin); int sum; int num; int temp; ){ cin>>num; ) break; temp = ; sum = ; while(num--) { int v; int t; cin>>v; cin…

Speed Limit Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 17030   Accepted: 11950 Description Bill and Ted are taking a road trip. But the odometer in their car is broken, so they don't know how many miles they have driven. Fortunately…

Speed Limit Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 17704   Accepted: 12435 Description Bill and Ted are taking a road trip. But the odometer in their car is broken, so they don't know how many miles they have driven. Fortunately…

一.Description Bill and Ted are taking a road trip. But the odometer in their car is broken, so they don't know how many miles they have driven. Fortunately, Bill has a working stopwatch, so they can record their speed and the total time they have dri…

一.Description Zombies love to eat brains. Yum. Input The first line contains a single integer n indicating the number of data sets. The following n lines each represent a data set. Each data set will be formatted according to the following descriptio…

                                                                                                  Speed Limit Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 17578   Accepted: 12361 Description Bill and Ted are taking a road trip. But th…

树链剖分是一个很固定的套路 一般用来解决树上两点之间的路径更改与查询 思想是将一棵树分成不想交的几条链 并且由于dfs的顺序性 给每条链上的点或边标的号必定是连着的 那么每两个点之间的路径都可以拆成几条链 那么就是对一群区间进行更改 这时候基本是用线段树进行logn的操作 做了三道基础题 都属于比较好想的 也就是线段树比较麻烦 需要写相当长一段时间... HDU 3966 给出一棵树的连接状况和边的大小 每次可以对a-b的路径的边的权值取反 或者改变指定边的值 或者求a-b路径的最大值 每次取反…

poj 题目分类 按照ac的代码长度分类(主要参考最短代码和自己写的代码) 短代码:0.01K--0.50K:中短代码:0.51K--1.00K:中等代码量:1.01K--2.00K:长代码:2.01K以上. 短:1147.1163.1922.2211.2215.2229.2232.2234.2242.2245.2262.2301.2309.2313.2334.2346.2348.2350.2352.2381.2405.2406: 中短:1014.1281.1618.1928.1961.2054…

本文来自:http://www.cppblog.com/snowshine09/archive/2011/08/02/152272.spx 多版本的POJ分类 流传最广的一种分类: 初期: 一.基本算法: (1)枚举. (poj1753,poj2965) (2)贪心(poj1328,poj2109,poj2586) (3)递归和分治法. (4)递推. (5)构造法.(poj3295) (6)模拟法.(poj1068,poj2632,poj1573,poj2993,poj2996) 二.图算法:…

acm之pku题目分类 对ACM有兴趣的同学们可以看看 DP:  1011   NTA                 简单题  1013   Great Equipment     简单题  1024   Calendar Game       简单题  1027   Human Gene Functions   简单题  1037   Gridland            简单题  1052   Algernon s Noxious Emissions 简单题  1409   Commun…