zoukankan      html  css  js  c++  java
  • HDOJ 1017 A Mathematical Curiosity

    Problem Description
    Given two integers n and m, count the number of pairs of integers (a,b) such that 0 < a < b < n and (a^2+b^2 +m)/(ab) is an integer.

    This problem contains multiple test cases!

    The first line of a multiple input is an integer N, then a blank line followed by N input blocks. Each input block is in the format indicated in the problem description. There is a blank line between input blocks.

    The output format consists of N output blocks. There is a blank line between output blocks.

    Input
    You will be given a number of cases in the input. Each case is specified by a line containing the integers n and m. The end of input is indicated by a case in which n = m = 0. You may assume that 0 < n <= 100.

    Output
    For each case, print the case number as well as the number of pairs (a,b) satisfying the given property. Print the output for each case on one line in the format as shown below.

    Sample Input
    1

    10 1
    20 3
    30 4
    0 0

    Sample Output
    Case 1: 2
    Case 2: 4
    Case 3: 5

    /*对于英语如我这样的人来说,,,,题目是天书啊。看了别人的翻译才知道什么意思的。。。
    
    大概意思是:(0 < a < b < n ) (a^2+b^2 +m)/(ab) 的结果是一个整数,
    所以满足需要(a^2+b^2 +m)%(ab)等于0。
    输出:求这样的(a,b)有多少对。
    懂了意思就是个水题。
    还有注意输出格式:
    第一个输入t为有t组数据。
    每组数据有n,m2个数。
    当n==0&&m==0时,这一组的输入结束,进行下一组。
    每2组之间的输出有一个空行。
    */
    
    import java.util.Scanner;
    
    public class Main{
        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            int t = sc.nextInt();
            while(t-->0){
                int p = 0;
                while(sc.hasNext()){
                    int n = sc.nextInt();
                    int m = sc.nextInt();
                    int num=0;
                    if(n==0&&m==0){
                        break;
                    }
                    for(int a=1;a<n-1;a++){
                        for(int b=a+1;b<n;b++){
                            if((a*a+b*b+m)%(a*b)==0){
                                num++;
                            }
                        }
                    }
                    System.out.println("Case "+(++p)+": "+num);
                }
                if(t!=0)
                    System.out.println();
            }
        }
    }
    
    
  • 相关阅读:
    怎样用 koa-router 实现 get 请求
    怎样用 koa-bodyparser 获取 POST 请求上下文中的表单数据
    怎样用 Koa 搭配 fs 模块返回一个 html 文件给前端
    怎样用 koa 解析出 POST 请求上下文中的表单数据
    怎样用 Koa 写 Hello, World!
    怎样使用 Vue-CLI 创建 Vue3 项目
    Koa 中怎样获取请求中的 query 参数
    怎样开发一个最简版 Koa 日志打印中间件
    怎样安装 Koa
    辅助理解 this 的一些代码片段
  • 原文地址:https://www.cnblogs.com/webmen/p/5739352.html
Copyright © 2011-2022 走看看