#include <iostream>
using namespace std;

class A {
protected:
int x;
public:
A(int a):x(a){}
};

class B: virtual public A {
protected:
int x;
public:

B(int a, int b):A(a),b(x){}


};

class C: virtual public A {
protected:
int x;
public:
C(int a, int c):A(a),c(x){}
};

class D: public B,C {
protected:
int x;
public:
D(int a, int b, int c,int d):A(a),B(b),C(c),d(x){}

};

class E: public D {
protected:
int x;
public:
E(int a, int b, int c, int d, int e):D(a,b,c,d),e(x){}
friend ostream&operator<<(ostream& os, const E&obj){
os << obj.A::x << " " << obj.B::x
<< " " <<obj.C::x << " "  << obj.D::x << " " << x << " ";
return os;
};


int main(){

E a(1,2,3,4,5);
 cout << a << endl;
   return 0;
}