import sequtils
# import algorithm,math,tables
# import sets,intsets,queues,heapqueue,bitops,strutils
# import strutils,strformat,sugar,macros
# template stopwatch(body) = (let t1 = cpuTime();body;echo "TIME:",(cpuTime() - t1) * 1000,"ms")
template times*(n:int,body) = (for _ in 0..<n: body)
template `max=`*(x,y) = x = max(x,y)
template `min=`*(x,y) = x = min(x,y)
template `^`(n:int) : int = (1 shl n)

proc getchar_unlocked():char {. importc:"getchar_unlocked",header: "<stdio.h>" .}
proc scan(): int =
  while true:
    let k = getchar_unlocked()
    if k < '0': return
    result = 10 * result + k.ord - '0'.ord

let n = scan()
let M = newSeqWith(n,scan())
const INF = 1e10.int
var ans = INF
var dp = newSeqWith[int](^n + 1,INF)
proc solve(s,total,buyTotal:int) =
  if s == ^n - 1:
    ans .min= total
    return
  if dp[s] <= total : return
  dp[s] = total
  for x in 0..<n:
    if (^x and s ) > 0 : continue
    solve(s or ^x,total + (M[x] - (buyTotal mod 1000)).max(0),buyTotal+M[x])
solve(0,0,0)
echo ans