题解 | 鸡兔同笼

#include <iostream>
using namespace std;

int main() {
    int n;
    int max, min;
    while (cin >> n) {
        if (n % 2) {
            cout << "0 0" << endl;
            continue;
        }
        int t = n;
        min = 0;
        max = t / 2;
        while (t) {
            if (t >= 4) {
                min++;
                t -= 4;
            } else {
                min++;
                t -= 2;
            }
        }
        cout << min << " " << max << endl;
    }
}
// 64 位输出请用 printf("%lld")

洒洒水啦~