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Ordinary Numbers

2000ms 262144K

Description:

Let's call a positive integer $$$n$$$ ordinary if in the decimal notation all its digits are the same. For example, $$$1$$$, $$$2$$$ and $$$99$$$ are ordinary numbers, but $$$719$$$ and $$$2021$$$ are not ordinary numbers.

For a given number $$$n$$$, find the number of ordinary numbers among the numbers from $$$1$$$ to $$$n$$$.

Input:

The first line contains one integer $$$t$$$ ($$$1 \le t \le 10^4$$$). Then $$$t$$$ test cases follow.

Each test case is characterized by one integer $$$n$$$ ($$$1 \le n \le 10^9$$$).

Output:

For each test case output the number of ordinary numbers among numbers from $$$1$$$ to $$$n$$$.

Sample Input:

6
1
2
3
4
5
100

Sample Output:

1
2
3
4
5
18

Informação

Codeforces

Provedor Codeforces

Código CF1520B

Tags

brute forcemathnumber theory

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Datas 09/05/2023 10:13:52

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