zoukankan      html  css  js  c++  java
  • PAT 1048. Find Coins

    Eva loves to collect coins from all over the universe, including some other planets like Mars. One day she visited a universal shopping mall which could accept all kinds of coins as payments. However, there was a special requirement of the payment: for each bill, she could only use exactly two coins to pay the exact amount. Since she has as many as 105 coins with her, she definitely needs your help. You are supposed to tell her, for any given amount of money, whether or not she can find two coins to pay for it.

    Input Specification:

    Each input file contains one test case. For each case, the first line contains 2 positive numbers: N (<=105, the total number of coins) and M(<=103, the amount of money Eva has to pay). The second line contains N face values of the coins, which are all positive numbers no more than 500. All the numbers in a line are separated by a space.

    Output Specification:

    For each test case, print in one line the two face values V1 and V2 (separated by a space) such that V1 + V2 = M and V1 <= V2. If such a solution is not unique, output the one with the smallest V1. If there is no solution, output "No Solution" instead.

    Sample Input 1:

    8 15
    1 2 8 7 2 4 11 15
    

    Sample Output 1:

    4 11
    

    Sample Input 2:

    7 14
    1 8 7 2 4 11 15
    

    Sample Output 2:

    No Solution
    

    分析
    这题比较简单,应该属于散列吧

    #include<iostream>
    using namespace std;
    int face[501]={0};
    int main(){
    	int n,m,num;
    	cin>>n>>m;
    	for(int i=0;i<n;i++){
    		cin>>num;
    		face[num]++;
    	}
    	for(int i=1;i<=500;i++){
    		if(face[i]==0) continue;
    		face[i]--;
    		if(m-i>0&&m-i<=500&&face[m-i]>=1){
    		   cout<<i<<" "<<m-i<<endl;
    		   return 0;
    		}
    	}
    	cout<<"No Solution"<<endl;
    	return 0;
    }
    
  • 相关阅读:
    ArcGIS10.1的安装问题
    谁是农业信息化的第一推动力
    名片
    【旺铺2012分享】导航CSS代码使用修改技巧!
    新旺铺教程之导航12
    新旺铺教程之导航
    Photoshop制作通透的紫色宝石字
    用PS怎么画虚线圆?
    一张彩色图片,如何用Photoshop处理成一张轮廓图(就是变成刚用铅笔画出来时的那样)_...
    php从入门到放弃系列-01.php环境的搭建
  • 原文地址:https://www.cnblogs.com/A-Little-Nut/p/8328332.html
Copyright © 2011-2022 走看看