public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int tt = sc . nextInt ( ) ;
  while ( tt -- > 0 ) {
    int l = sc . nextInt ( ) , c = sc . nextInt ( ) ;
    int al [ ] = new int [ l ] ;
    for ( int i = 0 ;
    i < l ;
    i ++ ) al [ i ] = sc . nextInt ( ) ;
    int count = 0 ;
    for ( int i = 0 ;
    i < c ;
    i ++ ) {
      int x = sc . nextInt ( ) ;
      if ( Arrays . binarySearch ( al , x ) >= 0 ) count ++ ;
    }
    System . out . println ( count ) ;
  };
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int tt = sc . nextInt ( ) ; while ( tt -- > 0 ) { int l = sc . nextInt ( ) , c = sc . nextInt ( ) ; int al [ ] = new int [ l ] ; for ( int i = 0 ; i < l ; i ++ ) al [ i ] = sc . nextInt ( ) ; int count = 0 ; for ( int i = 0 ; i < c ; i ++ ) { int x = sc . nextInt ( ) ; if ( Arrays . binarySearch ( al , x ) >= 0 ) 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 (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)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) 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))))) (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: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (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 (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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (identifier))) 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))))))))