CodeTON Round 4 (Div. 1 + Div. 2, Rated, Prizes!)

D. Climbing the Tree

https://codeforces.com/contest/1810/problem/D

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AcWing 1027. 方格取数

动态规划典型例题

https://www.acwing.com/problem/content/1029/

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

D. Accommodation

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

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AtCoder Beginner Contest 293

E - Geometric Progression

https://atcoder.jp/contests/abc293/tasks/abc293_e

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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 155

C - Even Sum Triplet

https://atcoder.jp/contests/arc155/tasks/arc155_c

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