All challenges

Report which roads are repaired in the source road-network instance.

Emit a deterministic static poker policy for Frontier-CS hand seeds.

Recover a mutable hidden permutation through value-segment queries and swaps.

Interactively recover a hidden permutation using match-count queries.

Order the fastest pepes from the source racing instances.

Recover the binary grid from palindromic-path source data.

Recover a hidden sequence of addition and multiplication operators.

Identify the hidden target from a noisy membership-search instance.

Track a hidden mole on a rooted tree through subtree queries that can move the target.

Recover a hidden unordered_set bucket count through the original collision-query protocol.

Recover a hidden modular exponent from timing queries to the original interactive device.

Pair mineral slices by kind using the Frontier-CS hidden pairing instances.