2019

11-20 / Educational Codeforces Round 75 (Rated for Div. 2)
11-17 / Codeforces Round #600 (Div. 2)
11-17 / Codeforces Round #597 (Div. 2)
11-16 / Educational Codeforces Round 76 (Rated for Div. 2)
11-15 / Codeforces Round #594 (Div. 2)
10-30 / OpenGL水波纹算法
10-05 / [Gym102056I]Misunderstood...Missing
10-04 / [洛谷P1128]求正整数
09-18 / 斯特林数
09-15 / 扫描线算法