#include<bits/stdc++.h>
using namespace std;
#define int long long int
main()
{
int n,sum=0,mx=0,x;
cin>>n;
for(int i=0;i<n;i++)
{
cin>>x;
sum+=x;
mx=max(mx,x);
}
if(mx>=(sum-mx))cout<<2*mx<<endl;
else cout<<sum<<endl;
}
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