Codeforces Round #447 (Div. 2) D. Ralph And His Tour in Binary Country [Thinking + Space Optimization] - Code World

Codeforces Round #447 (Div. 2) D. Ralph And His Tour in Binary Country [Thinking + Space Optimization]

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Codeforces Round #447 (Div. 2) D. Ralph And His Tour in Binary Country [Thinking + Space Optimization]

D. Harmonious Graph (Codeforces Round # 600 (Div. 2)) (disjoint-set thinking +)

Codeforces Round # 633 (Div. 2) D. Edge Weight Assignment thinking or guessing

Codeforces D. Cleaning (Round #696 Div. 2) (Thinking / Enumeration)

Codeforces Round #610 (Div. 2) D. Enchanted Artifact Interaction + Thinking

Codeforces Round #568 (Div. 2) D. Extra Element

Codeforces Round #576 (Div. 2) D. Welfare State

Codeforces Round #589 (Div. 2) D. Complete Tripartite

Codeforces Round #600 (Div. 2) D. Harmonious Graph

Codeforces Round #601 (Div. 2) D. Feeding Chicken

Codeforces Round #593 (Div. 2) D. Alice and the Doll

Codeforces Round #607 (Div. 2) D. Beingawesomeism

Codeforces Round #293 (Div. 2) D. Ilya and Escalator

Codeforces Round #616 (Div. 2) D. Irreducible Anagrams

Codeforces Round #510 (Div. 2) D. Petya and Array

Codeforces Round #692 (Div. 2）D. Grime Zoo

Codeforces Round #703 (Div. 2) D. Max Median

Codeforces Round #641 (Div. 2)D. Orac and Medians

Codeforces Round #478 (Div. 2) D. Ghosts (Geometry)

[Derivation] Codeforces Round #478 (Div. 2) D. Ghosts

D. Suspicious logarithms Codeforces Round 907 (Div. 2)

Codeforces Round #474 D. Full Binary Tree Queries【Thinking】

Codeforces Round # 615 (Div. 3) D. MEX maximizing (thinking good title)

D. Districts Connection (Thinking) Codeforces Round #677 (Div. 3)

Codeforces Round #586 (Div. 1 + Div. 2) D. Alex and Julian

Codeforces Round # 586 (Div. 1 + Div. 2) D (construct a bipartite graph, thinking, takes several conclusions proof theory)

Educational Codeforces Round 48 (Rated for Div. 2) XOR thinking

Codeforces Round # 614 (Div. 2) E (thinking, configuration, the DP)

Codeforces Round # 619 (Div. 2) E +-dimensional thinking RMQ

A. XORwice (Thinking) Codeforces Round #676 (Div. 2)

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