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Every fraction can be converted to a repeatin decimal. For example 1/2 = .5, 1/3 = .(3) and 1/6 = .1(6). Given an integer n, Tom wants to know how many digit k occurs totally in the repeating decimal presentation of 1/2, 1/3 ... 1/n.
The input consists of several test cases. Each test case is a line containing two integers n (2 ≤ n ≤ 100) and k (0 ≤ k ≤ 9).
Output the total occurrence of the digit.
3 5 7 3 7 0
1 1 0
时间上限 | 内存上限 |
1000 | 65536 |