public static void main ( String [ ] args ) throws IOException {
  BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  int n = Integer . parseInt ( br . readLine ( ) ) ;
  StringTokenizer st = new StringTokenizer ( br . readLine ( ) ) ;
  Integer [ ] visit = new Integer [ n ] ;
  Set < Integer > cafes = new HashSet < Integer > ( ) ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) {
    visit [ i ] = Integer . parseInt ( st . nextToken ( ) ) ;
    if ( ! cafes . contains ( visit [ i ] ) ) cafes . add ( visit [ i ] ) ;
  }
  Map < Integer , Integer > last = new HashMap < Integer , Integer > ( ) ;
  for ( int i = n - 1 ;
  i >= 0 ;
  -- i ) {
    Integer v = last . getOrDefault ( visit [ i ] , null ) ;
    if ( v == null ) last . put ( visit [ i ] , n - i ) ;
  }
  Integer winner = null ;
  int winnerScore = 0 ;
  for ( Integer i : cafes ) {
    int score = last . get ( i ) ;
    if ( winner == null || winnerScore < score ) {
      winner = i ;
      winnerScore = score ;
    }
  }
  System . out . println ( winner ) ;
}

public static void main ( String [ ] args ) throws IOException { BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ; int n = Integer . parseInt ( br . readLine ( ) ) ; StringTokenizer st = new StringTokenizer ( br . readLine ( ) ) ; Integer [ ] visit = new Integer [ n ] ; Set < Integer > cafes = new HashSet < Integer > ( ) ; for ( int i = 0 ; i < n ; ++ i ) { visit [ i ] = Integer . parseInt ( st . nextToken ( ) ) ; if ( ! cafes . contains ( visit [ i ] ) ) cafes . add ( visit [ i ] ) ; } Map < Integer , Integer > last = new HashMap < Integer , Integer > ( ) ; for ( int i = n - 1 ; i >= 0 ; -- i ) { Integer v = last . getOrDefault ( visit [ i ] , null ) ; if ( v == null ) last . put ( visit [ i ] , n - i ) ; } Integer winner = null ; int winnerScore = 0 ; for ( Integer i : cafes ) { int score = last . get ( i ) ; if ( winner == null || winnerScore < score ) { winner = i ; winnerScore = score ; } } System . out . println ( winner ) ; }
(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 (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 (method_invocation object: (identifier) name: (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (array_type element: (type_identifier) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (type_identifier) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments (type_identifier))) arguments: (argument_list)))) (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (if_statement condition: (parenthesized_expression (unary_expression operand: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))))) (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier) (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments (type_identifier) (type_identifier))) arguments: (argument_list)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)) (null_literal))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (null_literal))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)) (binary_expression left: (identifier) right: (identifier)))))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (null_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (enhanced_for_statement type: (type_identifier) name: (identifier) value: (identifier) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (null_literal)) right: (binary_expression left: (identifier) right: (identifier)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))