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

https://www.nowcoder.com/practice/3cd4621963e8454594f00199f4536bb1?tpId=37&tags=&title=&difficulty=0&judgeStatus=0&rp=1&sourceUrl=%2Fexam%2Foj%2Fta%3FtpId%3D37

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)

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