| Time Limit | $1$ 秒/Second(s) | Memory Limit | $128$ 兆字节/Megabyte(s) |
| 提交总数 | $37$ | 正确数量 | $20$ | "
| 裁判形式 | 标准裁判/Standard Judge | 我的状态 | 尚未尝试 |
| 难度 | 分类标签 | 数学 |
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.
The first line contains one integer t (1≤t≤104). Then t test cases follow.
Each test case is characterized by one integer n (1≤n≤109).
For each test case output the number of ordinary numbers among numbers from 1 to n.
6
1
2
3
4
5
100
1
2
3
4
5
18