AOJ Volume0-0013

http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0013&lang=jp

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

int main (int argc, const char * argv[])
{
    int read = 0;
    vector<int> num;
    
    while (cin >> read) {
        if(read == 0) {
            //pop
           cout << num[num.size() - 1] << "\n";
            num.pop_back();
        }else {
            //push
            num.push_back(read);
        }
    }
    
    return 0;
}