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#include <iostream>

using namespace std;

struct A {
        A() {
                print();
        }
        virtual void print() {
                cout <<"A"<<endl;
        }
};

struct B:A {
        void print() {
                cout<<"B"<<endl;
        }
};

int main(int argc, char** argv) {
        B foo = B();
        return 0;
}