#include <iostream>
using namespace std;
class X1
{
int value1;
public:
X1(int arg_value1=0) : value1(arg_value1) {}
};
class X2 : public X1
{
int value2;
};
int main()
{
X2 exampleClass;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKY2xhc3MgWDEKewogICAgaW50IHZhbHVlMTsKICAgIHB1YmxpYzoKICAgIFgxKGludCBhcmdfdmFsdWUxPTApIDogdmFsdWUxKGFyZ192YWx1ZTEpIHt9Cn07CgpjbGFzcyBYMiA6IHB1YmxpYyBYMQp7CiAgICBpbnQgdmFsdWUyOwp9OwoKaW50IG1haW4oKQp7CglYMiBleGFtcGxlQ2xhc3M7CglyZXR1cm4gMDsKfQ==