N = int(input())
s,t = map(int,input().split())
s -= 1
t -= 1
A = list(map(int,input().split()))
cnt = A[s]
if s<t:
    d1 = t-s-1
    d2 = N-1-t+s
    if d1%2==0:
        for i in range(s+1,s+d1//2+1):
            cnt += A[i]
        for i in range(t+d2//2+1,t+d2+1):
            cnt += A[i%N]
    elif d1%2==1 and d2%2==0:
        for i in range(s+1,s+d1//2+2):
            cnt += A[i]
        for i in range(t+d2//2+1,t+d2+1):
            cnt += A[i%N]
    elif d1%2==1 and d2%2==1:
        cnt1 = 0
        for i in range(s+1,s+d1//2+2):
            cnt1 += A[i]
        for i in range(t+d2//2+2,t+d2+1):
            cnt1 += A[i%N]
        cnt2 = 0
        for i in range(s+1,s+d1//2+1):
            cnt2 += A[i]
        for i in range(t+d2//2+1,t+d2+1):
            cnt2 += A[i%N]
        cnt = cnt+max(cnt1,cnt2)
else:
    d2 = s-t-1
    d1 = N-1-s+t
    if d1%2==0:
        for i in range(s+1,s+d1//2+1):
            cnt += A[i%N]
        for i in range(t+d2//2+1,t+d2+1):
            cnt += A[i]
    elif d1%2==1 and d2%2==0:
        for i in range(s+1,s+d1//2+2):
            cnt += A[i%N]
        for i in range(t+d2//2+1,t+d2+1):
            cnt += A[i]
    elif d1%2==1 and d2%2==1:
        cnt1 = 0
        for i in range(s+1,s+d1//2+2):
            cnt1 += A[i%N]
        for i in range(t+d2//2+2,t+d2+1):
            cnt1 += A[i]
        cnt2 = 0
        for i in range(s+1,s+d1//2+1):
            cnt2 += A[i%N]
        for i in range(t+d2//2+1,t+d2+1):
            cnt2 += A[i]
        cnt = cnt+max(cnt1,cnt2) 
S = sum(A)
print(cnt*2-S)