抄题解不关我事（

不用栈的解法：

#include <bits/stdc++.h>
#define int long long
using namespace std;

signed main() {
	vector<int> a;
	int x;
	while (cin >> x) {
		if (x == 0)
			break;
		a.push_back(x);
	}

	reverse(a.begin(), a.end());

	for (auto &i : a)
		cout << i << " ";

	return 0;
}