title: Maximum Points Intersection N Circles
signature: function maximum_points_intersection_n_circles(n)
test_code: using Printf
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  function validate_solution(actual, expected)
      return actual == expected
  end
  
  function driver(n, expected)
      try
  
          if validate_solution(PLACEHOLDER_FN_NAME(n), expected)
              return "PASSED";
          end
          return "FAILED";
      catch exception_obj
          return string(Base.typename(typeof(exception_obj)).wrapper);
      end
  end
  
  function main()
      
      result = driver(30, 870);
      @printf("TEST-0...%s\n",result);
      
      result = driver(25, 600);
      @printf("TEST-1...%s\n",result);
      
      result = driver(69, 4692);
      @printf("TEST-2...%s\n",result);
      
      result = driver(39, 1482);
      @printf("TEST-3...%s\n",result);
      
      result = driver(14, 182);
      @printf("TEST-4...%s\n",result);
      
      result = driver(60, 3540);
      @printf("TEST-5...%s\n",result);
      
      result = driver(89, 7832);
      @printf("TEST-6...%s\n",result);
      
      result = driver(27, 702);
      @printf("TEST-7...%s\n",result);
      
      result = driver(29, 812);
      @printf("TEST-8...%s\n",result);
      
      result = driver(29, 812);
      @printf("TEST-9...%s\n",result);
      
  end
  
  main()
source_py: def maximum_points_intersection_n_circles(n):
      return (n * (n - 1))
source_cpp: int maximum_points_intersection_n_circles(int n) {
    return n * ( n - 1 );
  }