#include <iostream>

/*
 *
 * 6.53
 *
 *
 */

int main () {

	/*
	  (a) int calc(int&, int&);
	  int calc(const int&, const int&); // Low level const
	  
	  (b) int calc(char*, char*);
	  int calc(const char*, const char*); // Low level const
	  
	  (c) int calc(char*, char*);
	  int calc(char* const, char* const); // Top level const ignored
	 */
	return 0;
}