public static void main ( String [ ] args ) {
  Scanner scanner = new Scanner ( System . in ) ;
  String range = scanner . nextLine ( ) ;
  scanner . close ( ) ;
  int delimiterPos = range . indexOf ( " " ) ;
  int s = Integer . parseInt ( range . substring ( 0 , delimiterPos ) ) ;
  int t = Integer . parseInt ( range . substring ( delimiterPos + 1 ) ) ;
  int num = t - ( s - 1 ) ;
  System . out . println ( num ) ;
}

public static void main ( String [ ] args ) { Scanner scanner = new Scanner ( System . in ) ; String range = scanner . nextLine ( ) ; scanner . close ( ) ; int delimiterPos = range . indexOf ( " ▁ " ) ; int s = Integer . parseInt ( range . substring ( 0 , delimiterPos ) ) ; int t = Integer . parseInt ( range . substring ( delimiterPos + 1 ) ) ; int num = t - ( s - 1 ) ; System . out . println ( num ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (identifier) name: (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 (string_literal))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal) (identifier))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))