Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026) A. Zhily and Array Operating Hints: Zhily and Array Operating Code: Zhily and Array Operating B. Zhily and Mex and Max Hints: Zhily and Mex and Max Code: Zhily and Mex and Max C. Zhily and Bracket Swapping Hints: Zhily and Bracket Swapping Code: Zhily and Bracket Swapping D. Zhily and Barknights Hints: Zhily and Barknights Code: Zhily and Barknights E. Zhily and Signpost Hints: Zhily and Signpost Editorial: Zhily and Signpost Code: Zhily and Signpost F. Zhily and Cycle Hints: Zhily and Cycle Editorial: Zhily and Cycle Code: Zhily and Cycle