Codeforces Round 1024 (Div. 1) 部分题目的题解：
A. Mex in the Grid
B. Quartet Swapping
C. 23 Kingdom
D. Mani and Segments
E. Kia Bakes a Cake

Codeforces Round 1008 (Div. 1) 部分题目的题解：
A. Gellyfish and Flaming Peony
B. Gellyfish and Camellia Japonica
C. Gellyfish and Eternal Violet
D. Gellyfish and Forget-Me-Not

Codeforces Round 1008 (Div. 1) 部分题目的题解：
A. Breach of Faith
B. Finding OR Sum
C. Binary Subsequence Value Sum
D. Maximum Polygon
E. Another Folding Strip