Codeforces Round #821 (Div. 2)......
Educational Codeforces Round 135 (Rated for Div. 2)......
Codeforces Round #819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022......
Codeforces Round #817 (Div. 4)......
Codeforces Round #818 (Div. 2)......
Codeforces Round #812 (Div. 2)......
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