sums

def input_get
  input = gets.chomp
  sum[i] = input.to_i
end

def sum
  sum = []
  i = 0
  puts input_get
  
  while input!=''
    puts input_get
    i+=1
  end
  
  sum=sum.inject(:+)
  puts sum
end

# def sum(nums)
#   total = 0

#   i = 0
#   while i < nums.count
#     total += nums[i]

#     i += 1
#   end

#   # return total
#   total
# end