2023牛客暑期多校训练营4

H - Merge the squares!

https://ac.nowcoder.com/acm/contest/57358/H

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Educational Codeforces Round 152 (Rated for Div. 2)

D. Array Painting

https://codeforces.com/contest/1849/problem/D

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Educational Codeforces Round 149 (Rated for Div. 2)

D. Bracket Coloring

https://codeforces.com/contest/1837/problem/D

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Nebius Welcome Round (Div. 1 + Div. 2)

D. Accommodation

https://codeforces.com/contest/1804/problem/D

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Codeforces Round #853 (Div. 2)

D. Serval and Shift-Shift-Shift

https://codeforces.com/contest/1789/problem/D

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AtCoder Regular Contest 153

C - ± Increasing Sequence

https://atcoder.jp/contests/arc153/tasks/arc153_c

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