1676: Problem E - Ones
内存限制：128 MB
时间限制：1 S
题面：传统
评测方式：文本比较
上传者：
提交：2
通过：2
题目描述
Given any integer 0 <= n <= 10000 not divisible by 2 or 5, some multiple of n is a number which in decimal notation is a sequence of 1's. How many digits are in the smallest such a multiple of n?
输入样例 复制
3
7
9901
输出样例 复制
3
6
12