n = int(input())
s, t = map(int, input().split())
a = list(map(int, input().split()))


s -= 1
t -= 1

s1 = []
for ind in range(s + 1, 2 * n):
    if ind % n != t:
        s1.append(a[ind % n])
    else:
        break
s2 = []
for ind in range(t + 1, 2 * n):
    if ind % n != s:
        s2.append(a[ind % n])
    else:
        break
s2 = s2[::-1]

len_s1 = len(s1)
len_s2 = len(s2)
ans1 = a[s] + sum(s1[:(1 + len_s1) // 2]) + sum(s2[:len_s2 // 2])
ans2 = a[s] + sum(s1[:len_s1 // 2]) + sum(s2[:(1 + len_s2) // 2])

ans = max(ans1, ans2) - (sum(a) - max(ans1, ans2))
print(ans)