转自:http://userpage.chemie.fu-berlin.de/diverse/doc/ISO_3166.htmlCountry A 2 A 3 Number ---------------------------------------------------------------------- AALAND ISLANDS AX ALA 248 AFGHANISTAN AF AFG 004 ALBANIA AL ALB 008 ALGERIA DZ DZA 012 AMERI…

1073. Square Country Time limit: 1.0 secondMemory limit: 64 MB There live square people in a square country. Everything in this country is square also. Thus, the Square Parliament has passed a law about a land. According to the law each citizen of th…

题目链接:hdu 5723 Abandoned country 题目大意:N个点,M条边:先构成一棵最小生成树,然后这个最小生成树上求任意两点之间的路径长度和,并求期望 /************************************************************** Problem:hdu 5723 User: youmi Language: C++ Result: Accepted Time:2932MS Memory:22396K solution:首先注意到任…

题目传送门 /* 题意:问n最少能是几个数的平方和 01背包:j*j的土地买不买的问题 详细解释:http://www.cnblogs.com/vongang/archive/2011/10/07/2200721.html */ #include <cstdio> #include <algorithm> #include <cmath> #include <cstring> using namespace std; ; const int INF = 0x…

The Country List Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2464    Accepted Submission(s): 576 Problem Description As the 2010 World Expo hosted by Shanghai is coming, CC is very honorabl…

HDU 5723 Abandoned country(落后渣国) Time Limit: 8000/4000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Description 题目描述 An abandoned country has n(n≤100000) villages which are numbered from 1 to n. Since abandoned for a long time, the r…

Abandoned country 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5723 Description An abandoned country has n(n≤100000) villages which are numbered from 1 to n. Since abandoned for a long time, the roads need to be re-built. There are m(m≤1000000) ro…

本文转自:http://www.codeproject.com/Articles/28363/How-to-convert-IP-address-to-country-name   Download source code - 1.11 MB How to retrieve a visitor's IP address Every visitor to your site or web application has an IP address. It is quite handy to be…

You want to visit a strange country. There are n cities in the country. Cities are numbered from 1 to n. The unique way to travel in the country is taking planes. Strangely, in this strange country, for every two cities A and B, there is a flight fro…

1698. Square Country 5 Time limit: 2.0 secondMemory limit: 64 MB The first arithmetical operation taught to the children of the Square country is the calculation of squares of positive integers. At the first lesson the children are provided with “eas…