Codeforces Round 440 (Div. 1, based on Technocup 2018 Elimination Round 2)
A
Maximum splitting
Codeforces
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原题
←B →
翻译中…

You are given several queries. In the $*i*$-th query you are given a single positive integer $*n*_{*i*}$. You are to represent $*n*_{*i*}$ as a sum of maximum possible number of composite summands and print this maximum number, or print -1, if there are no such splittings.

翻译中…

An integer greater than $1$ is composite, if it is not prime, i.e. if it has positive divisors not equal to $1$ and the integer itself.

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Input

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The first line contains single integer $*q*$ ($1 ≤ *q* ≤ 10^{5}$) — the number of queries.

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$*q*$ lines follow. The ($*i* + 1$)-th line contains single integer $*n*_{*i*}$ ($1 ≤ *n*_{*i*} ≤ 10^{9}$) — the $*i*$-th query.

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Output

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For each query print the maximum possible number of summands in a valid splitting to composite summands, or -1, if there are no such splittings.

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Note

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$12 = 4 + 4 + 4 = 4 + 8 = 6 + 6 = 12$, but the first splitting has the maximum possible number of summands.

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$8 = 4 + 4$, $6$ can't be split into several composite summands.

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$1, 2, 3$ are less than any composite number, so they do not have valid splittings.

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样例

Input #1
1
12
Output #1
3
InputCopy OutputCopy
Input #2
2
6
8
Output #2
1
2
InputCopy OutputCopy
Input #3
3
1
2
3
Output #3
-1
-1
-1
InputCopy OutputCopy
题目信息
题号
871A
时间限制
2 s
内存限制
256 MB

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