#include <bits/stdc++.h>
#define rep(a,n) for (ll a = 0; a < (n); ++a)
using namespace std;
using ll = long long;
typedef pair<ll,ll> P;
typedef pair<P,ll> PP;
typedef vector<vector<ll> > Graph;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const ll INF = 1e18;


//入力
ll n;
ll s,t;
vector<ll>a;



int main(){
    cin >> n;
    cin >> s >> t;
    s--;t--;
    a.resize(2*n);
    rep(i,n)cin>>a[i];
    rep(i,n)a[i+n]=a[i];
    ll x = 0;
    ll y = 0;
    if(s<t){
        vector<ll>wait;
        ll ns = s+n;
        int i=0;
        while((s+i)<=(t-i)){
            if(s+i==t-i){
                wait.push_back(a[s+i]);
                break;
            }
            x += a[s+i];
            y += a[t-i];
            i++;
        }
        i=1;
        while((t+i)<=(ns-i)){
            if((t+i)==(ns-i)){
                wait.push_back(a[t+i]);
                break;
            }
            x += a[ns-i];
            y += a[t+i];
            i++;
        }
        if(wait.size()==1){
            x += wait[0];
        }
        if(wait.size()>=2){
            x += max(wait[0],wait[1]);
            y += min(wait[0],wait[1]);
        }
        cout << x-y << endl;
    }
    else{
        vector<ll>wait;
        ll nt = t+n;
        int i=0;
        while((t+i)<=(s-i)){
            if(t+i==s-i){
                wait.push_back(a[t+i]);
                break;
            }
            y += a[t+i];
            x += a[s-i];
            i++;
        }
        i=1;
        while((s+i)<=(nt-i)){
            if((s+i)==(nt-i)){
                wait.push_back(a[s+i]);
                break;
            }
            y += a[nt-i];
            y += a[s+i];
            i++;
        }
        if(wait.size()==1){
            x += wait[0];
        }
        if(wait.size()>=2){
            x += max(wait[0],wait[1]);
            y += min(wait[0],wait[1]);
        }
        cout << x-y << endl;

    }

    return 0;
    
}