/* -*- coding: utf-8 -*-
 *
 * 1150.cc:  No.1150 シュークリームゲーム(Easy) - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 100000;
const int MAX_N2 = MAX_N * 2;
const long long LINF = 1LL << 62;

/* typedef */

typedef long long ll;

/* global variables */

int as[MAX_N2];
ll ass[MAX_N2 + 1];

/* subroutines */

/* main */

int main() {
  int n, s, t;
  scanf("%d%d%d", &n, &s, &t);
  s--, t--;
  int n2 = n * 2;

  for (int i = 0; i < n; i++) scanf("%d", as + i), as[i + n] = as[i];
  for (int i = 0; i < n2; i++) ass[i + 1] = ass[i] + as[i];

  int s0, t0, t1, s1;
  if (s < t)
    s0 = s, t0 = t1 = t, s1 = s + n;
  else
    s0 = s, t0 = t + n, t1 = t, s1 = s;

  int k = t0 - (s0 + 1), l = s1 - (t1 + 1);
  int hk = k / 2, hl = l / 2;
  int w0 = t0 - hk, w1 = t1 + 1 + hl;
  ll x = as[s], y = as[t];

  if (! (k & 1) || ! (l & 1)) {
    x += (ass[w0] - ass[s0 + 1]) + (ass[s1] - ass[w1]);
    y += (ass[t0] - ass[w0]) + (ass[w1] - ass[t1 + 1]);
  }
  else {
    if (as[w0] > as[w1]) {
      x += (ass[w0] - ass[s0 + 1]) + (ass[s1] - ass[w1 + 1]);
      y += (ass[t0] - ass[w0]) + (ass[w1 + 1] - ass[t1 + 1]);
    }
    else {
      x += (ass[w0 - 1] - ass[s0 + 1]) + (ass[s1] - ass[w1]);
      y += (ass[t0] - ass[w0 - 1]) + (ass[w1] - ass[t1 + 1]);
    }
  }

  printf("%lld\n", x - y);
  return 0;
}