Highest single digit divisor

Find the highest single digit divisor for all numbers in the given range [l, r].
The input contains two space-separated numbers land r. Your task is to print the highest single digit divisors for all numbers in the range [l, r] on separate lines.
36 42
9 1 2 3 8 1 7


Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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