Given a pair of positive integers, for example, 6 and 110, can this equation 6 = 110 be true? The answer is yes, if 6 is a decimal number and 110 is a binary number. Now for any pair of positive integers N1 and N2, your task is to find the radix of one number while that of the other is given. Input Specification: Each input file contains one test case. Each case occupies a line which contains 4 positive integers: ...
Given a sequence of positive integers and another positive integer p. The sequence is said to be a perfect sequence if M≤m×p where M and m are the maximum and minimum numbers in the sequence, respectively. Now given a sequence and a parameter p, you are supposed to find from the sequence as many numbers as possible to form a perfect subsequence. Input Specification: Each input file contains one test case. For each case, the first line contains two positive integers N and p, where N (≤10^5) is the number of integers in the sequence, and p (≤ 10^9 ) is the parameter. In the second line there are N positive integers, each is no greater than 10^9. ...