#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
signed main(){
  Int n;
  cin>>n;
  vector<Int> a(n);
  for(Int i=0;i<n;i++) cin>>a[i];
  Int s=1<<n;
  vector<Int> sm(s,0);
  for(Int b=0;b<s;b++)
    for(Int i=0;i<n;i++)
      if((b>>i)&1) sm[b]+=a[i];

  const Int INF = 1e9;
  vector<Int> dp(s,INF);
  dp[0]=0;
  for(Int b=0;b<s;b++){
    for(Int i=0;i<n;i++){
      if((b>>i)&1) continue;
      chmin(dp[b|(1<<i)],dp[b]+max(0LL,a[i]-sm[b]%1000));
    }    
  }
  cout<<dp[s-1]<<endl;
  return 0;
}