#include <iostream>
using namespace std;
class cb{
private:
int v1;
int v2;
public:
cb(){}
cb(int n1,int n2){
v1=n1;
v2=n2;
}
void fs(){
cout<<v1<<" ";
cout<<v2<<"\n";
}
};
class cd : cb{
private:
int v3;
public:
cd(int n3){
v3=n3;
}
void fscd(){
cout<<v3<<"\n";
}
};
int main() {
// your code goes here
return 0;
}
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