#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 500
#define mid (l+r)/2
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
const ll mod=1000000007;//998244353;
const ll inf=1e18*4;
const ld pai=acos(-1);
int n,all;
int a[509];
int dp[509][100009][2];
int bt(int id,int crnt,int to){
if(id==n){
if(crnt==0)return 0;
return 1e9;
}
int &ret=dp[id][crnt][to];
if(ret!=-1)return ret;
ret=1e9;
ret=min(ret,bt(id+1,crnt,to)+a[id]);
int ncrnt=crnt+a[id];
if(to==1)ncrnt=crnt-a[id];
ret=min(ret,bt(id+1,abs(ncrnt),1-(ncrnt<=0)));
ncrnt=crnt+a[id];
if(to==0)ncrnt=crnt-a[id];
ret=min(ret,bt(id+1,abs(ncrnt),1-(ncrnt<=0)));
return ret;
}
int main(){
mem(dp,-1);
cin>>n;
for(int i=0;i<n;i++)cin>>a[i],all+=a[i];
int ans=bt(0,0,0);
cout<<ans+(all-ans)/2<<endl;
}
