#include <iostream>
#include <stack>
using namespace std;
int main() {
stack <int> s;
s.push(5);
s.push(12);
s.push(7);
s.push(6);
s.push(19);
while(!s.empty()){
cout << s.top() << endl;
s.pop();
}
if(!s.empty())
s.pop();
return 0;
}
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