public static void main ( String [ ] args ) {
  Scanner reader = new Scanner ( System . in ) ;
  N = reader . nextInt ( ) ;
  int [ ] arr = new int [ N ] ;
  int [ ] gaps = new int [ N ] ;
  for ( int i = 0 ;
  i < N ;
  i ++ ) {
    arr [ i ] = reader . nextInt ( ) ;
    if ( i > 0 ) {
      int r = Math . abs ( arr [ i ] - arr [ i - 1 ] ) + gaps [ i - 1 ] ;
      if ( i > 1 ) {
        r = Math . min ( r , Math . abs ( arr [ i ] - arr [ i - 2 ] ) + gaps [ i - 2 ] ) ;
      }
      gaps [ i ] = r ;
    }
  }
  System . out . println ( gaps [ N - 1 ] ) ;
  reader . close ( ) ;
}

public static void main ( String [ ] args ) { Scanner reader = new Scanner ( System . in ) ; N = reader . nextInt ( ) ; int [ ] arr = new int [ N ] ; int [ ] gaps = new int [ N ] ; for ( int i = 0 ; i < N ; i ++ ) { arr [ i ] = reader . nextInt ( ) ; if ( i > 0 ) { int r = Math . abs ( arr [ i ] - arr [ i - 1 ] ) + gaps [ i - 1 ] ; if ( i > 1 ) { r = Math . min ( r , Math . abs ( arr [ i ] - arr [ i - 2 ] ) + gaps [ i - 2 ] ) ; } gaps [ i ] = r ; } } System . out . println ( gaps [ N - 1 ] ) ; reader . close ( ) ; }
(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)))))) (expression_statement (assignment_expression left: (identifier) right: (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))))) (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: (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)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))