#include <iostream>
#include <string>
using namespace std;
int main()
{
int stos[100];
int rozmiar=0, wczytaj_liczbe;
string komenda;
do
{
cin>>komenda;
if (komenda=="pop")
{
if (rozmiar>=0)
{
rozmiar=rozmiar-1;
}
}
if (komenda=="push")
{
if (rozmiar<100)
{
cin>>wczytaj_liczbe;
stos[rozmiar]=wczytaj_liczbe;
rozmiar=rozmiar+1;
}
}
}
while (komenda!="end");
if (rozmiar>99 || rozmiar<0)
{
cout<<"error";
}
if (rozmiar==0)
{
cout<< " ";
}
else
{
for (int i=rozmiar-1; i>=0; i--)
{
cout<<stos[i]<<endl;
}
}
return 0;
}
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}