#include <iostream>
using namespace std;

class A {

	void aa(int aa){
		int a = aa;
	}
	
	void aba(int aba){
		int a = aba;
	}
		void aaba(int aba){
		int a = aba;
	}
		void aaaba(int aba){
		int a = aba;
	}
	
};

class B {
	int a;

};

class C {
	char *b;
};

int main() {
	// your code goes here
	cout << "size of A:" << sizeof(A) << endl;
	cout << "size of B:" << sizeof(B) << endl;
	cout << "size of C:" << sizeof(C) << endl;
	return 0;
}