Good Bye 2020
C
Canine poetry
Codeforces
1300
原题
← BD →
翻译中…

After his wife's tragic death, Eurydice, Orpheus descended to the realm of death to see her. Reaching its gates was uneasy, but passing through them proved to be even more challenging. Mostly because of Cerberus, the three-headed hound of Hades.

翻译中…

Orpheus, a famous poet, and musician plans to calm Cerberus with his poetry and safely walk past him. He created a very peculiar poem for Cerberus. It consists only of lowercase English letters.

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We call a poem's substring a palindrome if and only if it reads the same backwards and forwards. A string $a$ is a substring of a string $b$ if $a$ can be obtained from $b$ by deleting several (possibly zero or all) characters from the beginning and several (possibly zero or all) characters from the end.

翻译中…

Unfortunately, Cerberus dislikes palindromes of length greater than $1$. For example in the poem abaa the hound of Hades wouldn't like substrings aba and aa.

翻译中…

Orpheus can only calm Cerberus if the hound likes his poetry. That's why he wants to change his poem so that it does not contain any palindrome substrings of length greater than $1$.

翻译中…

Orpheus can modify the poem by replacing a letter at any position with any lowercase English letter. He can use this operation arbitrarily many times (possibly zero). Since there can be many palindromes in his poem, he may have to make some corrections. But how many, exactly? Given the poem, determine the minimal number of letters that have to be changed so that the poem does not contain any palindromes of length greater than $1$.

翻译中…

Input

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The first line of the input contains a single integer $t$ ($1 \leq t \leq 10^5$) denoting the number of test cases, then $t$ test cases follow.

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The first and only line of each test case contains a non-empty string of lowercase English letters, Orpheus' poem.

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The sum of the length of Orpheus' poems in all test cases will not exceed $10^5$.

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Output

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You should output $t$ lines, $i$-th line should contain a single integer, answer to the $i$-th test case.

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Note

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In the first test case, we can replace the third character with c and obtain a palindrome-less poem bacba.

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In the second test case, we can replace the third character with d and obtain a palindrome-less poem abdac.

翻译中…

In the third test case, the initial poem already doesn't contain any palindromes, so Orpheus doesn't need to change anything there.

翻译中…

样例

Input #1
7
babba
abaac
codeforces
zeroorez
abcdcba
bbbbbbb
a
Output #1
1
1
0
1
1
4
0
InputCopy OutputCopy
题目信息
题号
1466C
所属比赛
时间限制
2 s
内存限制
256 MB
标签
动态规划
贪心
字符串

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。