A13848 | Decryption
时间限制1s
内存限制256MB
通过 / 提交0/0
题目描述
An agent called Cypher is decrypting a message, that contains a [composite number](https://en.wikipedia.org/wiki/Composite_number) $n$ . All divisors of $n$ , which are greater than $1$ , are placed in a circle. Cypher can choose the initial order of numbers in the circle.
In one move Cypher can choose two adjacent numbers in a circle and insert their [least common multiple](https://en.wikipedia.org/wiki/Least_common_multiple) between them. He can do that move as many times as needed.
A message is decrypted, if every two adjacent numbers are not coprime. Note that for such constraints it's always possible to decrypt the message.
Find the minimal number of moves that Cypher should do to decrypt the message, and show the initial order of numbers in the circle for that.
In one move Cypher can choose two adjacent numbers in a circle and insert their [least common multiple](https://en.wikipedia.org/wiki/Least_common_multiple) between them. He can do that move as many times as needed.
A message is decrypted, if every two adjacent numbers are not coprime. Note that for such constraints it's always possible to decrypt the message.
Find the minimal number of moves that Cypher should do to decrypt the message, and show the initial order of numbers in the circle for that.
输入格式
The first line contains an integer $t$ $(1 \le t \le 100)$ — the number of test cases. Next $t$ lines describe each test case.
In a single line of each test case description, there is a single composite number $n$ $(4 \le n \le 10^9)$ — the number from the message.
It's guaranteed that the total number of divisors of $n$ for all test cases does not exceed $2 \cdot 10^5$ .
In a single line of each test case description, there is a single composite number $n$ $(4 \le n \le 10^9)$ — the number from the message.
It's guaranteed that the total number of divisors of $n$ for all test cases does not exceed $2 \cdot 10^5$ .
输出格式
For each test case in the first line output the initial order of divisors, which are greater than $1$ , in the circle. In the second line output, the minimal number of moves needed to decrypt the message.
If there are different possible orders with a correct answer, print any of them.
If there are different possible orders with a correct answer, print any of them.
输入输出样例
输入 #1
3 6 4 30
输出 #1
2 3 6 1 2 4 0 2 30 6 3 15 5 10 0
In the first test case $6$ has three divisors, which are greater than $1$ : $2, 3, 6$ . Regardless of the initial order, numbers $2$ and $3$ are adjacent, so it's needed to place their least common multiple between them. After that the circle becomes $2, 6, 3, 6$ , and every two adjacent numbers are not coprime.
In the second test case $4$ has two divisors greater than $1$ : $2, 4$ , and they are not coprime, so any initial order is correct, and it's not needed to place any least common multiples.
In the third test case all divisors of $30$ greater than $1$ can be placed in some order so that there are no two adjacent numbers that are coprime.
In the second test case $4$ has two divisors greater than $1$ : $2, 4$ , and they are not coprime, so any initial order is correct, and it's not needed to place any least common multiples.
In the third test case all divisors of $30$ greater than $1$ can be placed in some order so that there are no two adjacent numbers that are coprime.
C++ 编辑器
输入
输出
可保存默认模板;新题优先使用已保存模板。
当前快捷键仅展示,暂不支持修改。
- 撤销
Ctrl / ⌘ + Z - 重做
Ctrl / ⌘ + Y - 查找
Ctrl / ⌘ + F - 全选
Ctrl / ⌘ + A - 复制
Ctrl / ⌘ + C - 剪切
Ctrl / ⌘ + X - 粘贴
Ctrl / ⌘ + V - 自动排版
工具栏排版按钮 - 草稿保存
编辑时自动保存到本机
历史
提交记录
状态说明时间源码
AI
作答助手
你好,我是作答助手。可以问思路、复杂度、样例含义或代码报错原因;不会直接给出完整 AC 代码。
确定要清空代码吗?
提交通过
评测结果:Accepted