AtCoder Beginner Contest 170
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Problem Statement
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Given is a number sequence $A$ of length $N$.
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Find the number of integers $i$ $\left(1 \leq i \leq N\right)$ with the following property:
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- For every integer
$j$$\left(1 \leq j \leq N\right)$such that$i \neq j$,$A_j$does not divide$A_i$.
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Constraints
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- All values in input are integers.
$1 \leq N \leq 2 \times 10^5$$1 \leq A_i \leq 10^6$
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Input
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Input is given from Standard Input in the following format:
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N
A_1 A_2 \cdots A_N
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Output
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Print the answer.
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样例
Input #1
5
24 11 8 3 16
Output #1
3
The integers with the property are $2$, $3$, and $4$.
Input #2
4
5 5 5 5
Output #2
0
Note that there can be multiple equal numbers.
Input #3
10
33 18 45 28 8 19 89 86 2 4
Output #3
5
题目信息
题面与样例版权归 AtCoder 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。