public static void main ( String args [ ] ) {
  FastScanner in = new FastScanner ( ) ;
  int n = in . nextInt ( ) ;
  int a [ ] = in . nextArray ( n ) ;
  HashMap < Integer , Integer > hmap = new HashMap < > ( ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    hmap . put ( a [ i ] , i ) ;
  }
  int max = 0 ;
  int ans = 0 ;
  for ( int key : hmap . keySet ( ) ) {
    if ( n - hmap . get ( key ) > max ) {
      max = n - hmap . get ( key ) ;
      ans = key ;
    }
  }
  System . out . println ( ans ) ;
}

public static void main ( String args [ ] ) { FastScanner in = new FastScanner ( ) ; int n = in . nextInt ( ) ; int a [ ] = in . nextArray ( n ) ; HashMap < Integer , Integer > hmap = new HashMap < > ( ) ; for ( int i = 0 ; i < n ; i ++ ) { hmap . put ( a [ i ] , i ) ; } int max = 0 ; int ans = 0 ; for ( int key : hmap . keySet ( ) ) { if ( n - hmap . get ( key ) > max ) { max = n - hmap . get ( key ) ; ans = key ; } } System . out . println ( ans ) ; }
(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)))) (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: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (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)) 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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)) (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (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))))))