PROGRAMMING:Help Xiao Ming out

Xiao Ming came across a multiple choice question with three options. He didn't know how to do it, so he decided to guess an answer. Please use the program to simulate the process of guessing the answer, that is: input a number through the keyboard, use the number to find the remainder of 3, and the output result is: 0 choose a, 1 choose B, 2 choose C
###Input format:
Enter a number in an integer range
###Output format:
Answer = output result
###Input example:
Here is a set of inputs. For example:
```in
six
```
###Output example:
The corresponding output is given here. For example:
```out
answer = A
```







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