题目连接:10763 Foreign Exchange 题目大意:给出交换学生的原先国家和所去的国家,交换成功的条件是如果A国给B国一个学生,对应的B国也必须给A国一个学生,否则就是交换失败. 解题思路: 给出数据  10 x  y 1 2 2 1 3 4 4 3 100 200 200 100 57 2 2 57 1 2 2 1 按照排序: xy y x 12 1 2 12 1 2 21 2 1 21 2 1 257 2 57   34 3 4  43 4 3 572 57 2 100 200…

题意:给出很多对数字,看看每一对(a,b)能不能找到对应的(b,a). 放在贪心这其实有点像检索. 用stl做,map+pair. 记录每一对出现的次数,然后遍历看看对应的那一对出现的次数有没有和自己出现的此时一样即可. 代码: /* * Author: illuz <iilluzen@gmail.com> * Blog: http://blog.csdn.net/hcbbt * File: uva10763.cpp * Lauguage: C/C++ * Create Date: 2013-…

Foreign Exchange Your non-profit organization (iCORE - international Confederation of Revolver Enthusiasts) coordinates a very successful foreign student exchange program. Over the last few years, demand has sky-rocketed and now you need assistance w…

  Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu   Description Your non-profit organization (iCORE - international Confederation of Revolver Enthusiasts) coordinates a very successful foreign student exchange program. Over the…

Your non-profitorganization (iCORE - international Confederationof Revolver Enthusiasts) coordinates a very successfulforeign student exchange program. Over the last few years, demand hassky-rocketed and now you need assistance with your task. The pr…

题目:10763 - Foreign Exchange 题目大意:给出每一个同学想要的交换坐标 a, b 代表这位同学在位置a希望能和b位置的同学交换.要求每一位同学都能找到和他交换的交换生. 解题思路:把给定的原先给定的序列,交换前后位置后得到新的序列. 假设这个新的序列和原来的序列同样就符合要求.由于  (a.b) (b. a)若是成对出现.那么前后交换后还是(b. a)(a.b). 代码: #include <stdio.h> #include <string.h> #inc…

题目 题目     分析 没什么好说的,字符串拼接一下再放进map.其实可以直接开俩数组排序后对比一下,但是我还是想熟悉熟悉map用法. 呃400ms,有点慢.     代码 #include <bits/stdc++.h> using namespace std; int read(string a) { int ans=0,i=0; while(i<a.length()){ans=(ans<<3)+(ans<<1)+a[i]-'0';i++;} return…

 10763 Foreign ExchangeYour non-profit organization (iCORE - international Confederation of Revolver Enthusiasts) coordinatesa very successful foreign student exchange program. Over the last few years, demand hassky-rocketed and now you need assistan…

Foreign Exchange Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Your non-profit organization (iCORE - international Confederation of Revolver Enthusiasts) coordinates a very successful foreign student exchange program. Over th…

 Foreign Exchange Your non-profit organization (iCORE - international Confederation of Revolver Enthusiasts) coordinates a very successful foreign student exchange program. Over the last few years, demand has sky-rocketed and now you need assistance…