#include <iostream>
#include <stack>
using namespace std;

int main() {
    stack<int> stk;
    int num;
    while (cin >> num && num != 0) {
        stk.push(num);
    }
    while (!stk.empty()) {
        cout << stk.top() << " ";
        stk.pop();
    }
}
// 64 位输出请用 printf("%lld")