Solution to day 1 part 2 of advent of code challenge

day1_part2.rb

count = 0 
previous = 999999999999999
current = 0 
block1=0
block2=0
block3=0
pos=0

File.readlines('input').each do |line|
  num = line.to_i
  puts "Read number is: " + line
  puts "pos: " + pos.to_s

  if pos % 3 == 0
    puts "Block 1: " + block1.to_s
    current = block1
    block1 = 0 
  end 
  if pos % 3 == 1
    puts "Block 2: " + block2.to_s
    current = block2
    block2 = 0 
  end 
  if pos % 3 == 2
    puts "Block 3: " + block3.to_s
    current = block3
    block3 = 0 
  end 
  
  block1 = block1 + num 
  if pos > 0 
    block2 = block2 + num 
  end 
  if pos > 1 
    block3 = block3 + num 
  end
  if pos > 2 
    if current > previous
      count = count + 1 
    end 
    previous = current
  end 

  pos = pos + 1 
end

puts "Block 1: " + block1.to_s
puts "Block 2: " + block2.to_s
puts "Block 3: " + block3.to_s

if current > previous
  count = count + 1 
end

puts count