• Educational Codeforces Round 99 (Rated for Div. 2) （A ~ F）个人题解
• Educational Codeforces Round 80 A - D题题解（又是卡很久的一场比赛）
• Educational Codeforces Round 82 (Rated for Div. 2) A. Erasing Zeroes（超简单的写法）
• Educational Codeforces Round 92 (Rated for Div. 2) A~D
• Educational Codeforces Round 93 (Rated for Div. 2)
• Educational Codeforces Round 94 (A - D题题解）
• Educational Codeforces Round 95 (Div. 2) A - B题题解（A题数据连错3次，搞人心态中）
• Educational Codeforces Round 96 (Rated for Div. 2) （A - C题个人题解）
• Educational Codeforces Round 97 (Rated for Div. 2) （A - D题个人题解）
• Educational Codeforces Round 110 (Rated for Div. 2) （AB签到，C题双指针，D题DP好题）
• Educational Codeforces Round 100 (Rated for Div. 2) 简单记录
• Educational Codeforces Round 102 Personal Editorial（A~C，max Rating 1500）
• Educational Codeforces Round 104 (Rated for Div. 2) A-E 个人题解
• Educational Codeforces Round 106 (Rated for Div. 2) 简单题解（A~C）
• Educational Codeforces Round 107 (Rated for Div. 2) 个人题解（A~D）
• Educational Codeforces Round 108 (Rated for Div. 2) （A思维，Bmath，C前缀和，D枚举）
• Educational Codeforces Round 109 (Rated for Div. 2) 个人补题记录（A~D，AB思维，C模拟构造，D题DP）