//  "Group," by Katherine Scott and edited by Stephen Widdows.  Written 10/2/95
//  This program is based on the idea of "Group" with binary operation
//  "multiplication mod 5."  Input two positive integers a and b and
//  the program will computer the group element "ab".

#include <iostream.h>
#include <stdlib.h>      //defines EXIT_SUCCESS etc

int main ( )
{
  int a;
  int b;
  int g;
  
  cout << "Please enter two positive integers a and b.\n";           
  cin >> a >> b;
	
  g = (a + b) % 5; 

  cout << "Group element ab is: " << g << "\n";
  return EXIT_SUCCESS;
}