258.
Given a non-negative integer num, repeatedly add all its digits until the result has only one digit.
For example:
Given num = 38, the process is like: 3 + 8 = 11, 1 + 1 = 2...
Intervals
题目连接:
http://codeforces.com/gym/100231/attachments
Description
Start with an integer, N0, which is greater than 0. Let N1 be the number of ones in the binary representation of N0. So...