# frozen_string_literal: true

N = gets.to_i
POINTS = gets.split.map(&:to_i)

DP = {}
ARRAY = {}

DP[-1] = 0
ARRAY[-1] = []

DP[0] = POINTS[0]
ARRAY[0] = [0]

DP[1] = POINTS[1]
ARRAY[1] = [1]

(2...N).each do |i|
  point = POINTS[i]
  i1 = i - 3
  i2 = i - 2
  index = DP[i1] > DP[i2] ? i1 : i2
  DP[i] = DP[index] + point
  ARRAY[i] = ARRAY[index] + [i]
end

index = DP[N - 1] > DP[N - 2] ? N - 1 : N - 2
puts DP[index]
puts ARRAY[index].map { |i| i+1 }.join(' ')