| Author: | Антон Карабанов | Time limit: | 1 sec | |
| Input file: | Standard input | Memory limit: | 512 Mb | |
| Output file: | Standard output |
Find the smallest positive integer which is divisible by n and starts from digits 2021 in decimal notation.
Input contains a single integer n — the divisor of the required number.
Output a single integer — the answer.
1 ≤ n ≤ 1012
| No. | Standard input | Standard output |
|---|---|---|
| 1 | |
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