Function' Description

Complete the function properPreparation in the editor below.

properPreparation has the following parameter:

n$.$ an integer

Returns

int: the number of good strings, modulo $({10}^9+7)$

Constraints

$1n{10}^5$

grad Input Format For Custom Testing

The first and only line contains an integer, $n,$ denoting the length of the string.

$$ Sample Case $0$

Sample Input for Custom Testing

$\backslash$table$[[$STDIN$,$FUNCTION$],[+$cdotsn$=5,]]$

Sample Output

$1460$

Explanation

One good string of length $5$ is "preep" and there are a total of $1460$ of them.

$$ Sample Case $1$

Sample Input For Custom Testing

give the code for the above code

gove $t$

Meesho coding questions. If u want Meesho coding

exam clearance msg us