public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int n = in . nextInt ( ) ;
  ArrayList < Domino > dominoes = new ArrayList < Domino > ( ) ;
  while ( n > 0 ) {
    in . nextLine ( ) ;
    String a = in . nextLine ( ) ;
    String b = in . nextLine ( ) ;
    Domino B = new Domino ( ) ;
    B . a [ 0 ] = ( int ) ( a . charAt ( 0 ) - '0' ) ;
    B . a [ 1 ] = ( int ) ( a . charAt ( 1 ) - '0' ) ;
    B . a [ 2 ] = ( int ) ( b . charAt ( 1 ) - '0' ) ;
    B . a [ 3 ] = ( int ) ( b . charAt ( 0 ) - '0' ) ;
    dominoes . add ( B ) ;
    for ( int i = 0 ;
    i < dominoes . size ( ) - 1 ;
    i ++ ) {
      if ( B . is_equal ( dominoes . get ( i ) ) ) {
        dominoes . remove ( i ) ;
      }
    }
    n -- ;
  }
  System . out . println ( dominoes . size ( ) ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int n = in . nextInt ( ) ; ArrayList < Domino > dominoes = new ArrayList < Domino > ( ) ; while ( n > 0 ) { in . nextLine ( ) ; String a = in . nextLine ( ) ; String b = in . nextLine ( ) ; Domino B = new Domino ( ) ; B . a [ 0 ] = ( int ) ( a . charAt ( 0 ) - '0' ) ; B . a [ 1 ] = ( int ) ( a . charAt ( 1 ) - '0' ) ; B . a [ 2 ] = ( int ) ( b . charAt ( 1 ) - '0' ) ; B . a [ 3 ] = ( int ) ( b . charAt ( 0 ) - '0' ) ; dominoes . add ( B ) ; for ( int i = 0 ; i < dominoes . size ( ) - 1 ; i ++ ) { if ( B . is_equal ( dominoes . get ( i ) ) ) { dominoes . remove ( i ) ; } } n -- ; } System . out . println ( dominoes . size ( ) ) ; }
(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)))) (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)))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (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)))) (expression_statement (assignment_expression left: (array_access array: (field_access object: (identifier) field: (identifier)) index: (decimal_integer_literal)) right: (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (character_literal)))))) (expression_statement (assignment_expression left: (array_access array: (field_access object: (identifier) field: (identifier)) index: (decimal_integer_literal)) right: (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (character_literal)))))) (expression_statement (assignment_expression left: (array_access array: (field_access object: (identifier) field: (identifier)) index: (decimal_integer_literal)) right: (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (character_literal)))))) (expression_statement (assignment_expression left: (array_access array: (field_access object: (identifier) field: (identifier)) index: (decimal_integer_literal)) right: (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (character_literal)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (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: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))))) (expression_statement (update_expression (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))))