UVa 11877 - The Coco-Cola Store

// UVa 11877 - The Coco-Cola Store

#include <iostream>
using namespace std;

int main() {
	long long unsigned int n;
	cin >> n;
	while (n && cin) {
		cout << n / 2 << endl;
		cin >> n;
	}
	return 0;
}