#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector <int> tablica;
int liczba;
short ile_razy = 0;
while(cin>>liczba)
{
if(ile_razy<=3)
{
tablica.push_back(liczba);
}
if((tablica[tablica.size()-1] == 42) && (tablica[tablica.size()-2] != 42))
{
ile_razy++;
}
}
for(int i=0; i<tablica.size(); i++)
{
cout << tablica[i] << endl;
}
}
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