import java.util.*;
import java.io.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
        FastScanner sc = new FastScanner(System.in);
        PrintWriter pw = new PrintWriter(System.out);
        int n = sc.nextInt();
        int s = sc.nextInt()-1;
        int t = sc.nextInt()-1;
        long[] a = sc.nextLongArray(n);
        long total = 0;
        for(long v : a){
            total += v;
        }
        ArrayList<Long> arr = new ArrayList<>();
        int xcnt = n/2+n%2;
        for(int i = -xcnt+1; i < xcnt; i++){
            int now = s+i;
            if(now < 0){
                now += n;
            }else if(now >= n){
                now -= n;
            }
            if(Math.abs(i) > Math.min(Math.abs(now-t),Math.abs(now-(n+t)))){
                continue;
            }else{
                arr.add(a[now]);
            }
        }
        long nowx = 0;
        for(int i = 0; i < xcnt; i++){
            nowx += arr.get(i);
        }
        long ans = nowx;
        int p = 0;
        int ne = xcnt;
        int len = arr.size();
        while(true){
            if(ne >= len) break;
            nowx += (arr.get(ne)-arr.get(p));
            p++;
            ne++;
            ans = Math.max(ans,nowx);
        }
        pw.println(ans-(total-ans));
        pw.flush();
    }

    static class GeekInteger {
        public static void save_sort(int[] array) {
            shuffle(array);
            Arrays.sort(array);
        }
 
        public static int[] shuffle(int[] array) {
            int n = array.length;
            Random random = new Random();
            for (int i = 0, j; i < n; i++) {
                j = i + random.nextInt(n - i);
                int randomElement = array[j];
                array[j] = array[i];
                array[i] = randomElement;
            }
            return array;
        }
 
    }
}

class FastScanner {
    private BufferedReader reader = null;
    private StringTokenizer tokenizer = null;
    public FastScanner(InputStream in) {
        reader = new BufferedReader(new InputStreamReader(in));
        tokenizer = null;
    }

    public String next() {
        if (tokenizer == null || !tokenizer.hasMoreTokens()) {
            try {
                tokenizer = new StringTokenizer(reader.readLine());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return tokenizer.nextToken();
    }

    public String nextLine() {
        if (tokenizer == null || !tokenizer.hasMoreTokens()) {
            try {
                return reader.readLine();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return tokenizer.nextToken("\n");
    }

    public long nextLong() {
        return Long.parseLong(next());
    }

    public int nextInt() {
        return Integer.parseInt(next());
    }

    public double nextDouble() {
         return Double.parseDouble(next());
    }
    
    public String[] nextArray(int n) {
        String[] a = new String[n];
        for (int i = 0; i < n; i++)
            a[i] = next();
        return a;
    }

    public int[] nextIntArray(int n) {
        int[] a = new int[n];
        for (int i = 0; i < n; i++)
            a[i] = nextInt();
        return a;
    }

    public long[] nextLongArray(int n) {
        long[] a = new long[n];
        for (int i = 0; i < n; i++)
            a[i] = nextLong();
        return a;
    } 
}