#include <iostream>
using namespace std;
class Foo {};
class Bar : public Foo {
public:
void func() { cout << 13; }
};
int main() {
Bar bar;
Foo* ptr = &bar;
static_cast<Bar*>(ptr)->func();
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKY2xhc3MgRm9vIHt9OwoKY2xhc3MgQmFyIDogcHVibGljIEZvbyB7CglwdWJsaWM6Cgl2b2lkIGZ1bmMoKSB7IGNvdXQgPDwgMTM7IH0KfTsKCmludCBtYWluKCkgewoJQmFyIGJhcjsKCUZvbyogcHRyID0gJmJhcjsKCQoJc3RhdGljX2Nhc3Q8QmFyKj4ocHRyKS0+ZnVuYygpOwoJcmV0dXJuIDA7Cn0=