http://poj.org/problem?id=2590 http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=1871 题目大意: 给两个点a,b,要求从a移动到b,每次移动步数要比前面的一步大或者等于或者小1.求最小的步数.(起始和终点必须步数为1) 思路: 直接对称着来做. 比如: 1->7的话 可以 1 2 2 1 1->9 1 2 3 2 1 50 1 2 3 4 5 6 7 6 5 4 3 2 1 1 两个OJ…

Steps Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 7872   Accepted: 3612 Description One steps through integer points of the straight line. The length of a step must be nonnegative and can be by one bigger than, equal to, or by one sm…

#include<iostream> #include<algorithm> #define MAXN 1000000 using namespace std; unsigned a[MAXN]; int main() { //freopen("acm.acm","r",stdin); int i; ; ; int x; int y; a[] = ; ; i < MAXN; ++ i) { a[i] = a[i-] + num; ++…

Number Steps Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 13758   Accepted: 7430 Description Starting from point (0,0) on a plane, we have written all non-negative integers 0,1,2, ... as shown in the figure. For example, 1, 2, and 3 h…

Number Steps Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 13664   Accepted: 7378 Description Starting from point (0,0) on a plane, we have written all non-negative integers 0,1,2, ... as shown in the figure. For example, 1, 2, and 3 h…

Online Judge系统      Online Judge系统(简称OJ)是一个在线的判题系统.用户可以在线提交给定问题的多种程序(如C.C++.Pascal.Java)源代码,系统对源代码进行编译和执行,并通过预先设计的测试数据来检验程序源代码的正确性. 一个用户提交的程序在Online Judge系统下执行时将受到比较严格的限制,包括运行时间限制.内存使用限制和安全限制等.用户程序执行的结果将被Online Judge系统捕捉并保存,然后再转交给一个裁判程序.该裁判程序或者比较用户程序…

POJ 3009 题意: 给出一个w*h的地图,其中0代表空地,1代表障碍物,2代表起点,3代表终点,每次行动可以走多个方格,每次只能向附近一格不是障碍物的方向行动,直到碰到障碍物才停下来,此时障碍物也会随之消失,如果行动时超出方格的界限或行动次数超过了10则会game over .如果行动时经过3则会win,记下此时行动次数(不是行动的方格数),求最小的行动次数 #include<cstdio> #include<iostream> #include<cstring>…

Log 2016-3-21 网上找的POJ分类,来源已经不清楚了.百度能百度到一大把.贴一份在博客上,鞭策自己刷题,不能偷懒!! 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: (1)图的深度优先遍历和广度优先遍历. (2)最短路…

好抽象的树形DP......... Apple Tree Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 6411 Accepted: 2097 Description Wshxzt is a lovely girl. She likes apple very much. One day HX takes her to an apple tree. There are N nodes in the tree. Each nod…

D - Going Home Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 2195 Appoint description:   Description On a grid map there are n little men and n houses. In each unit time, every little man can…