https://blog.csdn.net/weixin_41676881/article/details/80745177
How to determine the number after a decimal to binary conversion of a binary number, a total of a few?
After a decimal to binary conversion of a degree, to determine the binary number, a total of a few,
look at a comparison with the size of several square 2
Output octal can use% o, can be output as hexadecimal% x, the output is a binary going to solve our own.
Memory Limit Exceeded (Memory Limit)
We need their own space program complexity over time to optimize the memory space where the complexity and time complexity is corresponding to occur.
https://blog.csdn.net/team39/article/details/84814043