Dangerous Laser Power

constructive algorithms, dsu, sortings

Three Arrays

*special problem, constructive algorithms, implementation, sortings

Array sorting

*special problem, sortings

Little Brother

binary search, geometry, sortings

Row of Models

greedy, sortings

Lost Nodes

constructive algorithms, dp, graphs, interactive, sortings, trees

Snow sellers

greedy, sortings

Almost Certainly

*special problem, constructive algorithms, data structures, sortings

Freak Joker Process

binary search, data structures, sortings

Mixture

*special problem, data structures, geometry, math, sortings

Movie Fan

*special problem, data structures, greedy, implementation, sortings

Table Bowling

*special problem, sortings

Автобус

binary search, data structures, greedy, sortings

Roads

*special problem, geometry, sortings

Origami

geometry, math, sortings

Unequal Adjacent Elements

constructive algorithms, sortings

Olympiad Training

binary search, data structures, dp, flows, geometry, implementation, sortings

Spaceship Crisis Management

binary search, data structures, geometry, sortings

Sort the Table

*special problem, sortings

Burenka and Pether

*special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees