Problems

Topics
LCA#3298

Medium · Graphs · Depth-first Search · Bitsets

Awkward Lights#3462

Hard · Bitmasks · Bitsets · Math · Graphs

False figures#4598

Very hard · Geometry · Data Structures · Bitsets

Cinema tickets#5463

Medium · Dynamic programming · Bitsets

Board Blitz#7316

Hard · Bitwise Operations · Bitsets

Pixels#9706

Hard · Bitsets · Graphs · Math

Quests#11573

Very hard · Dynamic programming · Bitsets · Sorting · Greedy algorithms

The Root of Evil#11697

Very hard · Data Structures · Number theory · Queries · Segment Tree · Bitsets

Simple Problem#12288

Very hard · Graphs · Depth-first Search · Dynamic programming · Bitsets