AtCoder Grand Contest 022
B
GCD Sequence
AtCoder
⌀ 1645
原题
← AC →
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Problem Statement

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Nagase is a top student in high school. One day, she's analyzing some properties of special sets of positive integers.

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She thinks that a set $S = \{a_{1}, a_{2}, ..., a_{N}\}$ of distinct positive integers is called special if for all $1 \leq i \leq N$, the gcd (greatest common divisor) of $a_{i}$ and the sum of the remaining elements of $S$ is not $1$.

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Nagase wants to find a special set of size $N$. However, this task is too easy, so she decided to ramp up the difficulty. Nagase challenges you to find a special set of size $N$ such that the gcd of all elements are $1$ and the elements of the set does not exceed $30000$.

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Constraints

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  • $3 \leq N \leq 20000$
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Input

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Input is given from Standard Input in the following format:

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N

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Output

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Output $N$ space-separated integers, denoting the elements of the set $S$. $S$ must satisfy the following conditions :

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  • The elements must be distinct positive integers not exceeding $30000$.
  • The gcd of all elements of $S$ is $1$, i.e. there does not exist an integer $d > 1$ that divides all elements of $S$.
  • $S$ is a special set.
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If there are multiple solutions, you may output any of them. The elements of $S$ may be printed in any order. It is guaranteed that at least one solution exist under the given contraints.

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样例

Input #1
3
Output #1
2 5 63
$\{2, 5, 63\}$ is special because $gcd(2, 5 + 63) = 2, gcd(5, 2 + 63) = 5, gcd(63, 2 + 5) = 7$. Also, $gcd(2, 5, 63) = 1$. Thus, this set satisfies all the criteria. Note that $\{2, 4, 6\}$ is not a valid solution because $gcd(2, 4, 6) = 2 > 1$.
Input #2
4
Output #2
2 5 20 63
$\{2, 5, 20, 63\}$ is special because $gcd(2, 5 + 20 + 63) = 2, gcd(5, 2 + 20 + 63) = 5, gcd(20, 2 + 5 + 63) = 10, gcd(63, 2 + 5 + 20) = 9$. Also, $gcd(2, 5, 20, 63) = 1$. Thus, this set satisfies all the criteria.
题目信息
题号
agc022_b
时间限制
2 s
内存限制
256 MB

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