2022.02.11翻译Train and Peter

Train and Peter 题目（https://acs.jxnu.edu.cn/problem/CF8A）描述： Peter likes to travel by train. He likes it so much that on the train he falls asleep.
Once in summer Peter was going by train from city A to city B, and as usual, was sleeping. Then he woke up, started to look through the window and noticed that every railway station has a flag of a particular colour.
The boy started to memorize the order of the flags' colours that he had seen. But soon he fell asleep again. Unfo

2022.02.11翻译Train and Peter最先出现在Python成神之路。