public static void main ( String [ ] args ) {
  Scanner inp = new Scanner ( System . in ) ;
  int n = inp . nextInt ( ) ;
  String a = "312831303130313130313031" ;
  String b = "" ;
  int t ;
  boolean lp = false ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    t = inp . nextInt ( ) ;
    if ( t == 29 ) {
      if ( lp ) {
        System . out . println ( "NO" ) ;
        inp . close ( ) ;
        return ;
      }
      b += 28 ;
      lp = true ;
    }
    else {
      b += t ;
    }
  }
  String tmp = a ;
  if ( tmp . contains ( b ) ) {
    System . out . println ( "YES" ) ;
  }
  else if ( ( tmp += a ) . contains ( b ) ) {
    System . out . println ( "YES" ) ;
  }
  else if ( ( tmp += a ) . contains ( b ) ) {
    System . out . println ( "YES" ) ;
  }
  else {
    System . out . println ( "NO" ) ;
  }
  inp . close ( ) ;
}

public static void main ( String [ ] args ) { Scanner inp = new Scanner ( System . in ) ; int n = inp . nextInt ( ) ; String a = "312831303130313130313031" ; String b = " " ; int t ; boolean lp = false ; for ( int i = 0 ; i < n ; i ++ ) { t = inp . nextInt ( ) ; if ( t == 29 ) { if ( lp ) { System . out . println ( " NO " ) ; inp . close ( ) ; return ; } b += 28 ; lp = true ; } else { b += t ; } } String tmp = a ; if ( tmp . contains ( b ) ) { System . out . println ( " YES " ) ; } else if ( ( tmp += a ) . contains ( b ) ) { System . out . println ( " YES " ) ; } else if ( ( tmp += a ) . contains ( b ) ) { System . out . println ( " YES " ) ; } else { System . out . println ( " NO " ) ; } inp . close ( ) ; }
(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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (false))) (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: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (if_statement condition: (parenthesized_expression (identifier)) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (return_statement))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (expression_statement (assignment_expression left: (identifier) right: (true)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (identifier))) (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (if_statement condition: (parenthesized_expression (method_invocation object: (parenthesized_expression (assignment_expression left: (identifier) right: (identifier))) name: (identifier) arguments: (argument_list (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (if_statement condition: (parenthesized_expression (method_invocation object: (parenthesized_expression (assignment_expression left: (identifier) right: (identifier))) name: (identifier) arguments: (argument_list (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))