#include <iostream>
using namespace std;
 
struct MyQuestion
{
	void fun()
	{ cout<<"a"; }
 
	void fun()const
	{ cout<<"b"; }
 
	void call()
	{
		const auto *c = this;
		c->fun(); 	// calls fun() const
 
		fun(); 		// calls fun()
	}
};
 
int main() {
	MyQuestion q;
	q.call();
}
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