mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N = int(input())
    s, t = map(int, input().split())
    s -= 1
    t -= 1
    A = list(map(int, input().split()))

    DS = [0] * N
    DT = [0] * N
    for i in range(N):
        DS[i] = min(abs(i - s), abs(i - (N+s)))
        DT[i] = min(abs(i - t), abs(i - (N + t)))

    ans = 0
    tmp = []
    for i in range(N):
        if DS[i] < DT[i]:
            ans += A[i]
        elif DS[i] > DT[i]:
            ans -= A[i]
        else:
            tmp.append(A[i])
    if len(tmp) == 2:
        ans += max(tmp) - min(tmp)
    elif len(tmp) == 1:
        ans += tmp[0]
    print(ans)


if __name__ == '__main__':
    main()