Score : $600$ points
Nagase is a top student in high school. One day, she's analyzing some properties of special sets of positive integers.
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 $1$.
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 $30000$.
Input is given from Standard Input in the following format:
$N$
Output $N$ space-separated integers, denoting the elements of the set $S$. $S$ must satisfy the following conditions :
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.
3
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 $gcd(2, 4, 6) = 2 > 1$.
4
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.