ACM試題Problem K:Ones
Description
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?
％ binomial.m by David Terr, Raytheon, 5-11-04, from mathworks.com
％ Given nonnegative integers n and m with m<=n, compute the
％ binomial coefficient n choose m.
