傻逼OD题目又不全又要收费，看毛线，莫名奇妙 HW这叼机构别搁这儿害人得不得？ 我觉得我刷完原来的题目 过一遍华为机考的ED卷出处，就行了
HJ31 单词倒排
游戏本做过了好像
HJ32 密码提取
import sys
str1 = input()
str1 = list(str1)
res = 0
for i in range(len(str1)):
if i == 0:
continue
left = str1[0:i]
right = str1[i:]
shortLen = min(len(left), len(right))
count = 0
for j in range(shortLen):
if left[-(j+1)] == right[j]:
count += 2
else:
break
res = max(res, count)
#单数对称的情况
for i in range(len(str1)-1):
if i == 0:
continue
left = str1[0:i]
right = str1[i+1:]
mid = str1[i]
shortLen = min(len(left), len(right))
count = 1
for j in range(shortLen):
if left[-(j+1)] == right[j]:
count += 2
else:
break
res = max(res, count)
print(res)
