AtCoder Beginner Contest 102
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Problem Statement
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You are given a positive integer $N$. Find the minimum positive integer divisible by both $2$ and $N$.
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Constraints
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$1 \leq N \leq 10^9$- All values in input are integers.
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Input
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Input is given from Standard Input in the following format:
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N翻译中…
Output
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Print the minimum positive integer divisible by both $2$ and $N$.
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样例
Input #1
3
Output #1
6
$6$ is divisible by both $2$ and $3$. Also, there is no positive integer less than $6$ that is divisible by both $2$ and $3$. Thus, the answer is $6$.
Input #2
10
Output #2
10
Input #3
999999999
Output #3
1999999998
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。