#include "bits/stdc++.h"
using namespace std;
#define ll long long
#define endl '\n'
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define rep2(i,a,b) for(int i=int(a);i<int(b);i++)
#define pb emplace_back
#define all(x) (x).begin(),(x).end()
ll mod=1e9+7;
ll mod2=998244353;
const int INF=1e9;

signed main(){
	ll n;
    cin>>n;
    vector<ll> a(n);
    ll sum=0;
    rep(i,n){
        cin>>a[i];
        sum+=a[i];
    }
    ll ans=1e9;
    ll x=0;
    ans=abs(sum-x);
    rep(i,n){
        sum-=a[i];
        x+=a[i];
        ans=min(ans,abs(sum-x));
    }
    cout<<ans<<endl;

}

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