Design Tutorial: Learn from Math
题意翻译
输入一个数n(12<=n<=10^6),找出两个合数x,y,使得x+y=n,如果有多组x,y,输出任意一组即可
【输入格式】:一个数,n
【输出格式】:两个数,中间用空格隔开,任意一组满足题意的x和y
题目描述
One way to create a task is to learn from math. You can generate some random math statement or modify some theorems to get something new and build a new task from that.
For example, there is a statement called the "Goldbach's conjecture". It says: "each even number no less than four can be expressed as the sum of two primes". Let's modify it. How about a statement like that: "each integer no less than 12 can be expressed as the sum of two composite numbers." Not like the Goldbach's conjecture, I can prove this theorem.
You are given an integer $ n $ no less than 12, express it as a sum of two composite numbers.
输入输出格式
输入格式
The only line contains an integer $ n $ $ (12<=n<=10^{6}) $ .
输出格式
Output two composite integers $ x $ and $ y $ $ (1<x,y<n) $ such that $ x+y=n $ . If there are multiple solutions, you can output any of them.
输入输出样例
输入样例 #1
12
输出样例 #1
4 8
输入样例 #2
15
输出样例 #2
6 9
输入样例 #3
23
输出样例 #3
8 15
输入样例 #4
1000000
输出样例 #4
500000 500000
说明
In the first example, 12 = 4 + 8 and both 4, 8 are composite numbers. You can output "6 6" or "8 4" as well.
In the second example, 15 = 6 + 9. Note that you can't output "1 14" because 1 is not a composite number.