lethe2211

from wsgiref.handlers import format_date_time
from datetime import datetime
from time import mktime
import hmac
import hashlib
import base64
from urllib.parse import urlencode, quote_plus, quote

# Current HTTP date format like 'Thu, 27 Apr 2017 00:51:12 GMT'
date = format_date_time(mktime(datetime.now().timetuple()))

lethe2211

# -*- coding: utf-8 -*-

require 'nokogiri'
require 'open-uri'

# Microsoft Academic Search APIを扱うためのクラス
class MsacademicApiWrapper
  # 引数の論文IDに対応する論文のタイトルを返す
  def self.get_title(id)
    xml = get_paper_info(id)

lethe2211

#! /usr/bin/env python
# -*- coding: utf-8 -*-

import heapq

class Dijkstra(object):
    def dijkstra(self, adj, start, goal=None):
        '''
        ダイクストラアルゴリズムによる最短経路を求めるメソッド

lethe2211

#! /usr/bin/env python
# -*- coding: utf-8 -*-
 
import os
import sys
 
class Hoge(object):
    
    def __init__(self):
        pass

lethe2211

#! /usr/bin/env python
# -*- coding: utf-8 -*-
 
import os
import sys
 
class Hoge(object):
    
    def __init__(self):
        pass

lethe2211

#! /usr/bin/env python
# -*- coding: utf-8 -*-
 
import os
import sys
 
class Hoge(object):
    
    def __init__(self):
        pass

lethe2211

#! /usr/bin/env python
# -*- coding: utf-8 -*-
 
import os
import sys
 
class Hoge(object):
    
    def __init__(self):
        pass

lethe2211

#! /usr/bin/env python
# -*- coding: utf-8 -*-
 
import os
import sys
 
class Hoge(object):
    
    def __init__(self):
        pass

lethe2211

#! /usr/bin/env python
# -*- coding: utf-8 -*-
 
import os
import sys
 
class Hoge(object):
    
    def __init__(self):
        pass

lethe2211

a, b = map(int, raw_input().split())
print 4 * a + 2 * b