public static void main ( String [ ] args ) throws IOException {
  FastReader reader = new FastReader ( ) ;
  FastWriter writer = new FastWriter ( ) ;
  int n = reader . readSingleInt ( ) ;
  int [ ] [ ] points = new int [ n ] [ 2 ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    points [ i ] = reader . readIntArray ( 2 ) ;
  }
  int [ ] [ ] [ ] convexHullHalves = getConvexHull ( points ) ;
  ;
}

public static void main ( String [ ] args ) throws IOException { FastReader reader = new FastReader ( ) ; FastWriter writer = new FastWriter ( ) ; int n = reader . readSingleInt ( ) ; int [ ] [ ] points = new int [ n ] [ 2 ] ; for ( int i = 0 ; i < n ; i ++ ) { points [ i ] = reader . readIntArray ( 2 ) ; } int [ ] [ ] [ ] convexHullHalves = getConvexHull ( points ) ; ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier)) dimensions: (dimensions_expr (decimal_integer_literal))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))))))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (identifier)))))))