#include <iostream>

using namespace std;

int main() {

int a,b,c,d;

cin>>a>>b>>c>>d;

if(d==2*c)

 cout<<" "<<  a<<" "<<b<<" "<<c<<" "<<d<<" "<<2*d;

else

 cout<<" "<<  a<< " "<< b<<" "<<  c<< " "<< d<<" "<<  d+d-c;

    return 0;

}

 輸入1 2 3 4

測試時是1 2 3 4 5

解答時變8 1 2 3 4