text: array = []
  num = 0
  num1 = 1
  temp = 0
  while(num <= 4000000):
      print(num , num1)
      temp = num1
      print(num , num1)
      num1 = num1 + num
      print(num , num1)
      num = temp
      print(num , num1)
      
      #num,num1 = num1, num + num1
      
      if(num%2==0):
          array.append(num)
  print(sum(array))        
  