题解 | #汽水瓶#

#include <iostream>

using std::cout;
using std::endl;
using std::cin;

int max_cola(const int& num) {
    return num / 2 ;
}

int main(void) {
    int number;
    while (cin >> number) {
        if (number != 0) {
            cout << max_cola(number) << endl;
        }
    }
    return 0;
}