public static void main ( String args [ ] ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  boolean is = false ;
  if ( n < 0 ) {
    n = n * - 1 ;
    is = true ;
  }
  int last , lastSecond ;
  if ( is ) {
    last = n % 10 ;
    lastSecond = n % 100 ;
    lastSecond = lastSecond / 10 ;
    if ( last >= lastSecond ) {
      n = n / 10 ;
    }
    else {
      n = n / 100 ;
      n = n * 10 ;
      n = n + last ;
    }
    n = n * - 1 ;
  }
  System . out . println ( n ) ;
}

public static void main ( String args [ ] ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; boolean is = false ; if ( n < 0 ) { n = n * - 1 ; is = true ; } int last , lastSecond ; if ( is ) { last = n % 10 ; lastSecond = n % 100 ; lastSecond = lastSecond / 10 ; if ( last >= lastSecond ) { n = n / 10 ; } else { n = n / 100 ; n = n * 10 ; n = n + last ; } n = n * - 1 ; } System . out . println ( n ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier) dimensions: (dimensions))) 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: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (false))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal))))) (expression_statement (assignment_expression left: (identifier) right: (true))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier))) (if_statement condition: (parenthesized_expression (identifier)) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))