---

#include <iostream>  
 using namespace std;  
 int main()  
 {  
    
    int a,b,c,d,x,y,z,p,q,r;        
     while (cin>>a>>b>>c>>d)
{
        x=b-a;  
         y=c-b;  
      z=d-c;  
      
       p=b/a;  
        q=c/b;  
       r=d/c;  
          
        if(x==y && y==z)  
        { cout<<a<<" "<<b<<" "<<c<<" "<<d<<" "<<d+x<<endl;}  
       else  
            {  
                            
        cout<<a<<" "<<b<<" "<<c<<" "<<d<<" "<<d*r<<endl;  
           }  
}  
return 0;  
}