MULTIPLE

Time Limit : 1 Second

Memory Limit : 128 MB

Submission: 51

Solved: 13

Description
Write a program that, given a natural number N between 0 and 4999 (inclusively), and M distinct decimal digits X1,X2..XM (at least one), finds the smallest strictly positive multiple of N that has no other digits besides X1,X2..XM (if such a multiple exists).
Input
The input file has several data sets separated by an empty line, each data set having the following format:
• On the first line - the number N
• On the second line - the number M
• On the following M lines - the digits X1,X2..XM.
Output
For each data set, the program should write to standard output on a single line the multiple, if such a multiple exists, and 0 otherwise.
sample input
22
3
7
0
1

2
1
1
sample output
110
0
hint
source
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