记录2019寒假刷题

版权声明：转就转吧~~记得声明噢~~ https://blog.csdn.net/Soul_97/article/details/86318356

1.11 ：牛客训练赛，cf Educational Codeforces Round 58 [Rated for Div. 2]  

1.12 ：有事半天 + 颓废半天   无练习

1.13：cf Codeforces Round #532 (Div. 2)

1.14：