好了，经过惨痛的教训（cf掉分），决定在此立下目标：

1. 区域赛前刷完vj：​​https://vjudge.net/article/957​​
2. 省赛前刷完cf前6页。

第1页：​​https://codeforces.com/problemset/page/1?order=BY_SOLVED_DESC​​​

第2页：​​https://codeforces.com/problemset/page/2?order=BY_SOLVED_DESC​​

第3页：​​https://codeforces.com/problemset/page/3?order=BY_SOLVED_DESC​​​

第4页：​​https://codeforces.com/problemset/page/4?order=BY_SOLVED_DESC​​​

第5页：​​https://codeforces.com/problemset/page/5?order=BY_SOLVED_DESC​​​

第6页：​​https://codeforces.com/problemset/page/6?order=BY_SOLVED_DESC​​