hdu 5924.Mr. Frog’s Problem

http://acm.hdu.edu.cn/showproblem.php?pid=5924

题意：输入A，B，要求A≤C,D≤B，A/B+B/A≤C/D+D/C，求符合要求的C，D有几个

直接输出就好了，A和B一样就输出一个，不一样就是两个，一正一反，水

#include<iostream>
#include<string>
using namespace std;
int main()
{
    int n,i=1;
    string s1,s2;
    cin >> n;
    while(n--&&cin >> s1 >> s2)
    {
        cout << "Case #"<<i++<<":"<<endl;
        if(s1!=s2)
        {
            cout << 2<<endl;
            cout << s1 << " "  << s2 << endl;
        cout << s2 << " " <<s1 << endl;
        }
        else
        {
            cout << 1 <<endl;
            cout << s1 << " "  << s2 << endl;
        }
    }
    return 0;
}