What will be the output of the following C++ code?

#include <iostream>
using namespace std;
class BaseClass 
{
    int x;
    public:
    void setx(int n) 
    {
        x = n;
    }
    void showx() 
    {
        cout << x ;
    }
};
class DerivedClass : private BaseClass
{
    int y;
    public:
    void setxy(int n, int m)
    {
        setx(n);      
        y = m;
    }
    void showxy() 
    {
        showx();       
        cout << y << '\n';
    }
};
int main()
{
    DerivedClass ob;
    ob.setxy(10, 20);
    ob.showxy();
    return 0;
}