#include<iostream.h>
#include<conio.h>
class b1
{
protected:
int x;
public:
void assignx()
{
x=20;
}
};
class d1:public b1
{
protected:
int y;
public:
void assigny()
{
y=40;
}
};
class d2:public d1
{
protected:
int z;
public :
void assignz()
{
z=60;
}
};
class b2
{
protected:
int k;
public:
void assignk()
{
k=80;
}
};
class d3:public b2,public d2{
private:
int total;
public:
void output()
{
total=x+y+z+k;
cout<<total;
}
};
void main()
{
d3 s;
s.assignx();
s.assigny();
s.assignz();
s.assignk();
s.output();
getch();
}
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