#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
typedef pair<int,int>pii;
#define N 10100
int s[N],a[N];
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin>>n;
vector<pii>v;
for(int i=1;i<=n;i++) cin>>a[i],s[i]=s[i-1]+a[i];
for(int i=1;i<=n;i++){
for(int j=i;j<=n;j++){
v.push_back({s[j]-s[i-1],i});
}
}
sort(v.begin(),v.end());
int ans=1e18;
for(int i=0;i<v.size()-1;i++){
if(v[i].second!=v[i+1].second) ans=min(ans,v[i+1].first-v[i].first);
}
cout<<ans<<endl;
return 0 ;
}
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