class point {
int x, y;
public:
point( int _x, int _y ) { x = _x; y = _y; }
};
class circle : public point {
int r;
public:
circle( int x, int y, int _r ) : point(x,y) { r = _r; }
};
class cylinder : public circle {
int h;
public:
circle( int x, int y, int h ) : point( x, y ), circle( r ) {}
};
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