#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
int main(){
    int N, s, t;
    cin >> N >> s >> t;
    vector<long long> A(N);
    for(int i = 0; i < N; i++) cin >> A[i];
    s--;
    t--;
    vector<long long> ma1, ma2;
    if(s < t){
        for(int i = s + 1; i < t; i++) ma1.push_back(A[i]);
        for(int i = 0; i < N - (int)ma1.size() - 2; i++) ma2.push_back(A[(s - 1 - i + N) % N]);
    }
    else{
        for(int i = s - 1; i > t; i++) ma1.push_back(A[i]);
        for(int i = 0; i < N - (int)ma1.size() - 2; i++) ma2.push_back(A[(s + 1 + i) % N]);
    }
    long long suml = A[s], sumr = A[t];
    vector<long long> sum1(ma1.size() + 1), sum2(ma2.size() + 1);
    for(int i = 1; i <= ma1.size(); i++){
        sum1[i] = sum1[i - 1] + ma1[i - 1];
    }
    for(int i = 1; i <= ma2.size(); i++){
        sum2[i] = sum2[i - 1] + ma2[i - 1];
    }
    long long ans = -1e18;
    int N1 = ma1.size(), N2 = ma2.size();
    if(N1 % 2 == 0 || N2 % 2 == 0){
        long long temp1 = suml + sum1[(N1 + 1) / 2] + sum2[(N2 + 1) / 2];
        long long temp2 = sumr + sum1[N1] - sum1[(N1 + 1) / 2] + sum2[N2] - sum2[(N2 + 1) / 2];
        ans = max(ans, temp1 - temp2);
    }
    else{
        long long temp1 = suml + sum1[N1 / 2] + sum2[(N2 + 1) / 2];
        long long temp2 = sumr + sum1[N1] - sum1[N1 / 2] + sum2[N2] - sum2[(N2 + 1) / 2];
        ans = max(ans, temp1 - temp2);
        temp1 = suml + sum1[(N1 + 1) / 2] + sum2[N2 / 2];
        temp2 = sumr + sum1[N1] - sum1[(N1 + 1) / 2] + sum2[N2] - sum2[N2 / 2];
        ans = max(ans, temp1 - temp2);
    }
    cout << ans << endl;
}