The number of n-digit numbers is 6.#9941

The number of n-digit numbers is 6.

1 second
64 megabytes
Easy

Determine and output the count of natural -digit numbers that fall outside the interval .

Input

Three natural numbers , , and are provided on a single line, separated by spaces (1 \le n \le 12, 1 \le a, b \le 10^{12}).

Output

Provide the solution to the problem.

Examples

Example 1

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