import sys
input=lambda: sys.stdin.readline().rstrip()
n=int(input())
s,t=map(int,input().split())
A=[int(i) for i in input().split()]
sign=1
if s>t:
	s,t=t,s
	sign=-1


ans=0
s-=1
t-=1

dif=0
for i in range(n):
	if i<=s:
		if s-i<i+n-t:
			ans+=A[i]
		elif s-i==i+n-t:
			dif+=A[i]
		else:
			ans-=A[i]
	elif i<=t:
		if i-s<t-i:
			ans+=A[i]
		elif i-s==t-i:
			dif-=A[i]
		else:
			ans-=A[i]
	else:
		if n+s-i<i-t:
			ans+=A[i]
		elif n+s-i==i-t:
			dif+=A[i]
		else:
			ans-=A[i]
if sign==1:
	if dif>=0:
		print(ans+dif)
	else:
		print(ans-dif)
else:
	if dif>=0:
		print(-ans+dif)
	else:
		print(-ans-dif)