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Home » Problems (hard)
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  • Easy
  • Medium
  • Hard
Name Code Successful Submissions Accuracy
Ordering the Soldiers ORDERS 40 3.7697
Team Selection TEAMSEL 33 3.4354
Some More Homework MARCHA6 12 22.8070
The Guessing Game MARCHA3 11 17.5676
Primes in the GCD table D4 10 12.2137
Divide and conquer F6 9 27.1429
Swapping mismatches C1 9 5.2910
Johny the farmer E3 7 17.3913
Congruent triangles H3 6 14.2857
Buggy algorithm E5 6 50.0000
Highways HIGH 5 12.0000
Crystals FX 5 38.4615
XOR Rounds RESN02 5 41.6667
Help the judge J6 4 37.2881
Permutation Jumping RESN03 4 41.6667
The Secret Fellowship of Byteland BFORG 3 27.2727
Motorbike Racing M2 3 25.5814
Se7en F4 3 1.6393
The Turing Music Box TMBOX 3 88.8889
Magic Strings J5 3 53.3333
Chemical reactions G5 2 21.7391
The Mine Field M1 2 60.0000
The Game of Crosses & Crosses CROSSES 2 20.0000
The Bytelandian Union A8 2 3.6364
Alternating Permutations SNCK03 2 40.0000
Wildcard Matching L2 2 7.6923
Powerful Strongholds SNCK02 2 28.5714
Packing the Boxes A5 2 14.2857
A Christmas Pizza Puzzle A7 2 42.8571
Box Packers INSOMB4 2 22.2222
The Burning City BURNCITY 2 66.6667
Place the mines! MARCHAX 1 33.3333
Mosaic GX 1 33.3333
Place the balloon L5 1 11.1111
Alien Clock D7 1 10.0000
Effective Sets J4 1 3.5714
Reaching the Rig REACHRIG 1 1.1236
Pack the balls in a box! DX 1 60.0000
Falling Snow INSOMB8 1 33.3333
Alien language G4 1 2.9412
Bytelandian Telecom BYTELE 0
The Archipelago ARCHPLG 0 0.0000
Toll Trolls M4 0 0.0000
Park tour KX 0 0.0000
Overlapping discs M5 0

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