The number of odd n-digit numbers is 4
Medium
Execution time limit is 1 second
Runtime memory usage limit is 64 megabytes
Determine and output the count of odd natural numbers with exactly n digits that do not fall within the range [a, b].
Input
Three natural numbers n, a, and b are provided in a single line, separated by spaces (1 ≤ n ≤ 12, 1 ≤ a, b ≤ 10^12).
Output
Provide the solution to the problem.
Examples
Input #1
Answer #1
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