#include <fstream>

using namespace std;
ifstream fin("transport.in");
ofstream fout("transport.out");
const int NMAX=16005;
int v[NMAX], k, n;
bool ok(int C)
{
    int tr, sc=0, i;
    for(i=1;i<=n;i++)
    {
        if(v[i]>C)
            return 0;
        if(sc+v[i]<=C)
            sc=sc+v[i];
        else
        {
            tr++;
            sc=v[i];
        }
    }
        if(sc>0)
            tr++;
        return tr;
}
int bs(int st, int dr)
{
   int med, last=-1;
   while(st<=dr)
   {
       med=(st+dr)/2;
       if(ok(med))
       {
           last=med;
           dr=med-1;
       }
       else
        st=med+1;
   }
    return last;
}
int main()
{
    int i, s, ans;
    for(i=1;i<=n;i++)
    {
        fin>>v[i];
        s=s+v[i];
    }
    ans=bs(1, s);
    fout<<ans<<"\n";
    fin.close();
    fout.close();
    return 0;
}