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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Hello 2023

C. Least Prefix Sum

https://codeforces.com/contest/1779/problem/C

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Codeforces Round #837 (Div. 2)

B. Hossam and Friends

https://codeforces.com/contest/1771/problem/B

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