# Problem H

Pea Pattern

Do you see the pattern in the following sequence of numbers?

$1, 11, 21, 1112, 3112, 211213, 312213, \ldots $

Each term describes the makeup of the previous term in the
list. For example, the term $3112$ indicates that the previous
term consisted of three $1$’s (that’s the $31$ in $3112$) and one $2$ (that’s the $12$ in $3112$). The next term after
$3112$ indicates that it
contains two $1$’s, one
$2$ and one $3$. This is an example of a *pea
pattern*.

A pea pattern can start with any number. For example, if we start with the number $20902$ the sequence would proceed $202219$, $10113219$, $1041121319$, and so on. Note that digits with no occurrences in the previous number are skipped in the next element of the sequence.

We know what you’re thinking. You’re wondering if $101011213141516171829$ appears in the sequence starting with $20902$. Well, this is your lucky day because you’re about to find out.

## Input

Input consists of a single line containing two positive integers $n$ and $m$, where $n$ is the starting value for the sequence and $m$ is a target value. Both values will lie between $0$ and $10^{100}-1$.

## Output

If $m$ appears in the
pea pattern that starts with $n$, display its position in the list,
where the initial value is in position $1$. If $m$ does not appear in the sequence,
display `Does not appear`. We believe that
all of these patterns converge on a repeating sequence within
$100$ numbers, but if you
find a sequence with more than $100$ numbers in it, display
`I’m bored`.

Sample Input 1 | Sample Output 1 |
---|---|

1 3112 |
5 |

Sample Input 2 | Sample Output 2 |
---|---|

1 3113 |
Does not appear |

Sample Input 3 | Sample Output 3 |
---|---|

20902 101011213141516171829 |
10 |