Problem9372--CCC '19 S2 - Pretty Average Primes

9372: CCC '19 S2 - Pretty Average Primes

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Time Limit : 1.000 sec  Memory Limit : 512 MiB

Description

For various given positive integers N>3, find two primes, A and B such that N is the average (mean) of A and B. That is, N should be equal to $\frac{A+B}{2}$.

Recall that a prime number is an integer P>1 which is only divisible by 1 and P. For example, 2, 3, 5, 7, 11 are the first few primes, and 4, 6, 8, 9 are not prime numbers.

Input

The first line of input is the number $T\ (1≤T≤1000)$, which is the number of test cases. 

Each of the next $T$ lines contain one integer $N_i\ (4≤N_i≤1000000,\ 1≤i≤T)$.

For 6 of the available 15 marks, all $N_i<1000$.

Output

The output will consist of $T$ lines. The i-th line of output will contain two integers, $A_i$ and $B_i$, separated by one space. It should be the case that $N_i=\frac{A_i+B_i}{2}$ and that $A_i$ and $B_i$ are prime numbers.

If there are more than one possible $A_i$ and $B_i$ for a particular $N_i$, output any such pair. The order of the pair $A_i$ and $B_i$ does not matter.

It will be the case that there will always be at least one set of values $A_i$ and $B_i$ for any given $N_i$.

Sample 1 Input

4
8
4
7
21

Sample 1 Output

3 13
5 3
7 7
13 29

Notice that:

$8=\frac{3+13}{2}$

$4=\frac{5+3}{2}$

$7=\frac{7+7}{2}$

$21=\frac{13+29}{2}$

It is interesting to note, that we can also write

$8=\frac{5+11}{2}$

$21=\frac{5+37}{2}=\frac{11+31}{2}=\frac{19+23}{2}$


$7=\frac{3+11}{2}$

and so any of these pairs could have also been used in output. There is no pairs of primes other than 3 and 5 which average to the value of 4.


HINT

相同题目:CCC19s2

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