HDU 1303 Doubles
来源:互联网 发布:重庆软件行业协会地址 编辑:程序博客网 时间:2024/05/17 12:50
Doubles
Problem Description
As part of an arithmetic competency program, your students will be given randomly generated lists of from 2 to 15 unique positive integers and asked to determine how many items in each list are twice some other item in the same list. You will need a program to help you with the grading. This program should be able to scan the lists and output the correct answer for each one. For example, given the list
1 4 3 2 9 7 18 22
your program should answer 3, as 2 is twice 1, 4 is twice 2, and 18 is twice 9.
1 4 3 2 9 7 18 22
your program should answer 3, as 2 is twice 1, 4 is twice 2, and 18 is twice 9.
Input
The input file will consist of one or more lists of numbers. There will be one list of numbers per line. Each list will contain from 2 to 15 unique positive integers. No integer will be larger than 99. Each line will be terminated with the integer 0, which is not considered part of the list. A line with the single number -1 will mark the end of the file. The example input below shows 3 separate lists. Some lists may not contain any doubles.
Output
The output will consist of one line per input list, containing a count of the items that are double some other item.
Sample Input
1 4 3 2 9 7 18 22 02 4 8 10 07 5 11 13 1 3 0-1
Sample Output
320
题意:一行数中找到有多少个二倍关系,给的数字范围是0到99。
建一个bool型数组,范围100出头就行,标记所有出现过的数,从头开始找2倍关系。
#include<cstdio>#include<cstring>using namespace std;int main(){ bool a[102]; int n; while(~scanf("%d",&n)) { if(n==-1) break; memset(a,0,sizeof(a)); a[n]=1; if(n) while(scanf("%d",&n)&&n) a[n]=1; int i,sum=0; for(i=1;i<50;i++) { if(a[i]&&a[i*2]) { sum++; } } printf("%d\n",sum); } return 0;}
1 0
- hdu 1303 Doubles(模拟)
- HDU 1303 Doubles
- hdu 1303 Doubles
- hdu 1303 Doubles
- hdu 1303 Doubles
- HDU 1303 Doubles(水题)
- HDU 1303 Doubles
- hdu 1303 Doubles
- HDU 1303 Doubles(简单数组)
- HDU 1303 Doubles
- hdu 1303 doubles …
- hdu 1303(Doubles )(暴力求解)
- 杭电 HDU ACM 1303 Doubles
- POJ 1552 && HDU 1303 Doubles(水~)
- 1303:Doubles
- HDU 1301 Doubles
- HDU——1303Doubles(水题,试手二分查找)
- hdoj.1303 Doubles 20140819
- PHP客户端与C#服务器端 Socket通信
- Ubuntu中Apache,Django,wsgi环境搭建
- hdu 1520 简单树形dp
- Oracle 分组统计,并显示百分比的实现
- viewport/流式布局
- HDU 1303 Doubles
- 小时倒计时代码
- 【javase复习】## day 9正则表达式 ##
- SBI确认70万的Jan Dhan帐户以推动贷款
- 利用Jpgraph创建3D饼形图
- 最简单的基于FFmpeg的AVfilter例子(水印叠加)
- 庖丁常见错误处理
- Unable to instantiate application com.honjane.app.MyApplication
- 数据结构实验之栈一:进制转换