AlgoRace

dp, shortest paths

Weak Memory

shortest paths

Battlefield

geometry, implementation, shortest paths

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

Chamber of Secrets

shortest paths

Missile Silos

data structures, graphs, shortest paths

Take-off Ramps

graphs, shortest paths

Winning Strategy

binary search, graphs, math, shortest paths

Volleyball

graphs, shortest paths

Volleyball

graphs, shortest paths

Track

graphs, greedy, shortest paths

Track

brute force, shortest paths

Password

bitmasks, dp, shortest paths

Evacuation

flows, graphs, shortest paths

Ships Shortest Path

geometry, shortest paths

Eternal Victory

dfs and similar, dp, graphs, greedy, shortest paths, trees

Shortest Path

graphs, shortest paths

Chess

math, shortest paths

Trial for Chief

graphs, greedy, shortest paths

Knights

geometry, graphs, shortest paths, sortings

String Problem

shortest paths

Quarrel

graphs, shortest paths

Roads in Berland

graphs, shortest paths

Dijkstra?

graphs, hashing, shortest paths

Hierarchy

greedy, shortest paths

Two Paths

dfs and similar, graphs, shortest paths, trees

Shortest path of the king

greedy, shortest paths