public static void main ( String [ ] args ) {
  FastReader sc = new FastReader ( ) ;
  int n = sc . nextInt ( ) ;
  int m = sc . nextInt ( ) ;
  int k = sc . nextInt ( ) ;
  int p [ ] = new int [ n ] ;
  int s [ ] = new int [ n ] ;
  int d [ ] = new int [ m ] ;
  int count = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    p [ i ] = sc . nextInt ( ) ;
    ;
  }
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    s [ i ] = sc . nextInt ( ) ;
    if ( p [ i ] > d [ s [ i ] - 1 ] ) {
      d [ s [ i ] - 1 ] = p [ i ] ;
    }
  }
  for ( int i = 0 ;
  i < k ;
  i ++ ) {
    int c = sc . nextInt ( ) ;
    if ( p [ c - 1 ] < d [ s [ c - 1 ] - 1 ] ) count ++ ;
  }
  System . out . println ( count ) ;
}

public static void main ( String [ ] args ) { FastReader sc = new FastReader ( ) ; int n = sc . nextInt ( ) ; int m = sc . nextInt ( ) ; int k = sc . nextInt ( ) ; int p [ ] = new int [ n ] ; int s [ ] = new int [ n ] ; int d [ ] = new int [ m ] ; int count = 0 ; for ( int i = 0 ; i < n ; i ++ ) { p [ i ] = sc . nextInt ( ) ; ; } for ( int i = 0 ; i < n ; i ++ ) { s [ i ] = sc . nextInt ( ) ; if ( p [ i ] > d [ s [ i ] - 1 ] ) { d [ s [ i ] - 1 ] = p [ i ] ; } } for ( int i = 0 ; i < k ; i ++ ) { int c = sc . nextInt ( ) ; if ( p [ c - 1 ] < d [ s [ c - 1 ] - 1 ] ) count ++ ; } System . out . println ( count ) ; }
(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)))) (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) value: (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)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (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)))))) (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: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (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 (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (decimal_integer_literal))))) consequence: (expression_statement (update_expression (identifier)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))