inheritance

#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
#define pb push_back
#define mpk make_pair
#define N 1001
#define PI acos(-1.0)
#define Mn 1000000007

class BaseClass
{
public:
    ll a;
    BaseClass(ll n)
    {
        a=n;
    }
};

class DerivedClass: public BaseClass
{
public:
    ll b;
    DerivedClass(int x,int y):BaseClass(x)
    {
        b=y;
    }
};

int main()
{

    DerivedClass o1(2,3);
    cout<<o1.a<<" "<<o1.b<<endl;
    return 0;
}