시간 제한 | 메모리 제한 | 제출 | 정답 | 맞힌 사람 | 정답 비율 |
---|---|---|---|---|---|
3 초 | 512 MB | 161 | 25 | 22 | 25.000% |
For every positive integer we may obtain a non-negative integer by multiplying its digits. This defines a function f, e.g. f(38) = 24.
This function gets more interesting if we allow for other bases. In base 3, the number 80 is written as 2222, so: f3(80) = 16.
We want you to solve the reverse problem: given a base B and a number N, what is the smallest positive integer X such that fB(X) = N?
The input consists of a single line containing two integers B and N, satisfying 2 < B ≤ 10 000 and 0 < N < 263.
Output the smallest positive integer solution X of the equation fB(X) = N. If no such X exists, output the word “impossible”. The input is carefully chosen such that X < 263 holds (if X exists).
10 24
38
10 11
impossible
9 216
546
10000 5810859769934419200
5989840988999909996