Problem Statement
Let $x$ be a string of length at least $1$. We will call $x$ a good string, if for any string $y$ and any integer $k (k \geq 2)$, the string obtained by concatenating $k$ copies of $y$ is different from $x$. For example, a, bbc and cdcdc are good strings, while aa, bbbb and cdcdcd are not.
Let $w$ be a string of length at least $1$. For a sequence $F=(\,f_1,\,f_2,\,...,\,f_m)$ consisting of $m$ elements, we will call $F$ a good representation of $w$, if the following conditions are both satisfied:
- For any
$i \, (1 \leq i \leq m)$,$f_i$is a good string. - The string obtained by concatenating
$f_1,\,f_2,\,...,\,f_m$in this order, is$w$.
For example, when $w=$aabb, there are five good representations of $w$:
$($aabb$)$$($a$,$abb$)$$($aab$,$b$)$$($a$,$ab$,$b$)$$($a$,$a$,$b$,$b$)$
Among the good representations of $w$, the ones with the smallest number of elements are called the best representations of $w$. For example, there are only one best representation of $w=$aabb: $($aabb$)$.
You are given a string $w$. Find the following:
- the number of elements of a best representation of
$w$ - the number of the best representations of
$w$, modulo$1000000007 \, (=10^9+7)$
(It is guaranteed that a good representation of $w$ always exists.)
Constraints
$1 \leq |w| \leq 500000 \, (=5 \times 10^5)$$w$consists of lowercase letters (a-z).
Partial Score
$400$points will be awarded for passing the test set satisfying$1 \leq |w| \leq 4000$.
Input
The input is given from Standard Input in the following format:
w
Output
Print $2$ lines.
- In the first line, print the number of elements of a best representation of
$w$. - In the second line, print the number of the best representations of
$w$, modulo$1000000007$.
样例
aab
1
1
bcbc
2
3
ddd
3
1
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