#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template <class T> using vec = vector<T>;
template <class T> using vvec = vector<vec<T>>;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N,S,T;
    cin >> N >> S >> T;
    S--; T--;
    vec<ll> A(N);
    for(auto& x:A) cin >> x;
    vec<ll> X,Y;
    for(int i=(S+1)%N;;(i+=1)%=N){
        if(i==T) break;
        X.push_back(A[i]);
    }
    for(int i=(S-1+N)%N;;(i+=-1+N)%=N){
        if(i==T) break;
        Y.push_back(A[i]);
    }
    int n = X.size(),m = Y.size();
    if(n%2 && m%2){
        ll s = A[S]-A[T];
        vec<ll> c(2);
        for(int i=0;i<n;i++){
            if(i<n/2) s += X[i];
            else if(i==n/2) c[0] = X[i];
            else s -= X[i];
        }
        for(int i=0;i<m;i++){
            if(i<m/2) s += Y[i];
            else if(i==m/2) c[1] = Y[i];
            else s -= Y[i];
        }
        if(c[0]<c[1]) swap(c[0],c[1]);
        cout << s+c[0]-c[1] << "\n";
    }else{
        ll s = A[S]-A[T];
        for(int i=0;i<n;i++){
            if(i<=(n-1)/2) s += X[i];
            else s -= X[i];
        }
        for(int i=0;i<m;i++){
            if(i<=(m-1)/2) s += Y[i];
            else s -= Y[i];
        }
        cout << s << "\n";
    }
}