Educational Codeforces Round 174 (Rated for Div. 2)(讲解)
Codeforces Round 897 (Div. 2) (A-E2)讲解
Codeforces Round 1000 (Div. 2)(A-E)讲解
IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)(A-F1)讲解
Codeforces Round 1022 (Div. 2)
Educational Codeforces Round 156 (Rated for Div. 2)(A-D)讲解
Codeforces Round 896 (Div. 2)(A-D1)讲解
Educational Codeforces Round 161 (Rated for Div. 2)(A-E讲解)
Codeforces Round 1020 Div.3 A~F讲解
Codeforces Round 991 (Div. 3)讲解
Codeforces Round 900 (Div. 3)(A-F)讲解
Codeforces Round 964 (Div. 4)AK实录
Codeforces Round 954 (Div. 3)(A-E)实录
Codeforces Round 921 (Div. 2)(A-D讲解)
Codeforces Round 919 (Div. 2)(A-D讲解)
Codeforces Round 920 (Div. 3)(A–F讲解)
Codeforces Round 1019 (Div. 2) 题目讲解 ABCDE (CF2103)
Codeforces Round 1016 (Div. 3) 题目讲解 ABCDEFG (CF2093)
Codeforces Round 1020 (Div. 3) 题目讲解 CDEFG1G2 (CF2106)
Educational Codeforces Round 177 (Div. 2) 题目讲解 BCDE (CF2086)