static void exec ( Scanner in , PrintStream out ) {
  int N = in . nextInt ( ) ;
  int [ ] A = new int [ N ] ;
  for ( int i = 0 ;
  i < N ;
  i += 1 ) {
    A [ i ] = in . nextInt ( ) ;
  }
  IntSummaryStatistics s = IntStream . of ( A ) . summaryStatistics ( ) ;
  out . println ( s . getMax ( ) - s . getMin ( ) ) ;
}

static void exec ( Scanner in , PrintStream out ) { int N = in . nextInt ( ) ; int [ ] A = new int [ N ] ; for ( int i = 0 ; i < N ; i += 1 ) { A [ i ] = in . nextInt ( ) ; } IntSummaryStatistics s = IntStream . of ( A ) . summaryStatistics ( ) ; out . println ( s . getMax ( ) - s . getMin ( ) ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier)) (formal_parameter type: (type_identifier) name: (identifier))) body: (block (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))))) (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: (assignment_expression left: (identifier) right: (decimal_integer_literal)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))))))