题解 | 鸡兔同笼

#include<bits/stdc++.h>

using namespace std;
int main()
{
    int k;
    while(cin>>k)
    {
        int max_num = 0;
        int min_num = 0;
        max_num = k / 2;
        if(k%2!=0)
        {
            cout<<0<<" "<<0<<endl; 
            continue;    
        }
        else if(k%4 == 0)
        {
            min_num = k/4;
        }
        else
        {
            min_num = k/4+1;
        }
        cout<<min_num<<" "<<max_num<<endl;
    }
    return 0;
}