# All Can Do

Time Limit: 2000/1000 MS (Java/Others)

Memory Limit: 32768/32768 K (Java/Others)

## Description

Construct a number N follows three below restrictions:
1. T-1 <= Log10N < T, ( 0 < T <= 100 )
2. 90 mod b = 0
3. N mod b = 0

## Input

The first line contains an integer t means the number of test cases.
Then each line will contain two integers T and b.

## Output

For each case, output N in one line, if there is no such answer, output "Impossible!".

## Sample Input

3
2 45
1 10
2 5

## Sample Output

90
Impossible!
95

lcy

## Source

HDU 2009-11 Programming Contest