title: Maximum Points Intersection N Circles
signature: function maximumPointsIntersectionNCircles($n) {
test_code: <?php
  
  
  // SOLUTION CODE 
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function validateSolution($actual, $expected){
      return serialize($actual) == serialize($expected);
  }
  
  function driver($n, $expected){
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME($n), $expected)){
          return "PASSED";
        }
        return "FAILED";
      }
      catch (Exception $exception_obj) {
        return get_class($exception_obj);
      }
  }
  
  function main(){
      printf("TEST-0...%s\n",driver(
        30, 
        870));
      
      printf("TEST-1...%s\n",driver(
        25, 
        600));
      
      printf("TEST-2...%s\n",driver(
        69, 
        4692));
      
      printf("TEST-3...%s\n",driver(
        39, 
        1482));
      
      printf("TEST-4...%s\n",driver(
        14, 
        182));
      
      printf("TEST-5...%s\n",driver(
        60, 
        3540));
      
      printf("TEST-6...%s\n",driver(
        89, 
        7832));
      
      printf("TEST-7...%s\n",driver(
        27, 
        702));
      
      printf("TEST-8...%s\n",driver(
        29, 
        812));
      
      printf("TEST-9...%s\n",driver(
        29, 
        812));
      
  }
  
  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 );
  }