n = input()
v = map(int, raw_input().split())
dp = [0]*(n+1)
rev = [0]*(n+1)
used = [0]*(n+1)
dp[1] = v[0]
rev[1] = 0
used[1] = 1
for i in xrange(1,n):
    s = dp[i]
    t = dp[i-1]+v[i] if i>0 else -1
    u = dp[i-2]+v[i] if i>1 else -1
    if s<=t and u<=t:
        dp[i+1] = t
        rev[i+1] = i-1
        used[i+1] = 1
    elif s<=u and t<=u:
        dp[i+1] = u
        rev[i+1] = i-2
        used[i+1] = 1
    else:
        dp[i+1] = s
        rev[i+1] = i
print dp[-1]
r = n
ans = []
while r:
    if used[r]:
        ans.append(r)
    r = rev[r]
print " ".join(str(x) for x in ans[::-1])