A14176. Ordinary Numbers
编程题
普及/提高-
知识点
题目描述
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 $n$ .
For a given number $n$ , find the number of ordinary numbers among the numbers from $1$ to $n$ .
输入格式
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 $n$ ( $1 \le n \le 10^9$ ).
Each test case is characterized by one integer $n$ ( $1 \le n \le 10^9$ ).
输出格式
For each test case output the number of ordinary numbers among numbers from $1$ to $n$ .
输入输出样例
输入 #1
6 1 2 3 4 5 100
输出 #1
1 2 3 4 5 18