title: Number Of Triangles In A Plane If No More Than Two Points Are Collinear
signature: numberOfTrianglesInAPlaneIfNoMoreThanTwoPointsAreCollinear :: Integer -> Integer
  numberOfTrianglesInAPlaneIfNoMoreThanTwoPointsAreCollinear n = 
test_code: import Text.Printf
  import Control.Exception (catch, SomeException)
  import Data.Typeable
  import qualified Data.List as List
  import qualified Data.Map as Map
  import qualified Data.Set as Set
  
  -- SOLUTION CODE
  -- ============================================
  
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  validateSolution :: Integer -> Integer -> Bool
  validateSolution actual expected = do
      actual == expected
  
  
  driver :: Integer -> Integer -> String
  driver n expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME n) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver (67) (47905) )
  
      printf "TEST-1...%s\n" (driver (58) (30856) )
  
      printf "TEST-2...%s\n" (driver (67) (47905) )
  
      printf "TEST-3...%s\n" (driver (60) (34220) )
  
      printf "TEST-4...%s\n" (driver (4) (4) )
  
      printf "TEST-5...%s\n" (driver (97) (147440) )
  
      printf "TEST-6...%s\n" (driver (9) (84) )
  
      printf "TEST-7...%s\n" (driver (16) (560) )
  
      printf "TEST-8...%s\n" (driver (83) (91881) )
  
      printf "TEST-9...%s\n" (driver (87) (105995) )
  
source_py: def number_of_triangles_in_a_plane_if_no_more_than_two_points_are_collinear(n):
      return (((n * (n - 1)) * (n - 2)) // 6)
source_cpp: int number_of_triangles_in_a_plane_if_no_more_than_two_points_are_collinear(int n) {
    return n * ( n - 1 ) * ( n - 2 ) / 6;
  }