#include<iostream>
using namespace std;
int main()
{
int T1[5];
int T2[5]={0};
int cn,ct=0;
for( int i=0 ; i<5;i++)
{
cin >> T1[i];
}
for (int i=0 ; i<5 ; i++)
{
cn=T1[i];
while(cn==T1[i+1])
{
T2[i]=T1[i];
ct++;
i++;
}
}
for ( int i=0 ; i<5 ; i++)
{
cout << T2[i]<<endl;
}
return 0;
}
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