# Doesn't seem possible

Let $N$ be the smallest positive integer for which the digit sum of $N$ and the digit sum of $N+1$ are both divisible by $50$. How many digits of $N$ are 9?

Details and assumptions

The digit sum of a number is the sum of all its digits. For example the digit sum of 1123 is $1 + 1 + 2 + 3 = 7$.

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