package types.visibility.y;
import  types.visibility.x.A;
class C extends A {
	int fy(C that) {
		return /*this.x0 + this.x1 + */this.x2 + this.x3
				+ /*that.x0 + that.x1 + */that.x2 + that.x3;
	}
}

class D {
	int gy(A that) {
		return /*that.x0 + that.x1 + that.x2 + */that.x3;
	}
}