1.22-1.25 week0 介绍训练计划，介绍c++

1.26-2.1 week1

2.2-2.8 week2

2.9-2.14 week3

2.15-2.22 过年（复习题，不周测）

2.23-3.1 week4

3.2-3.8 week5