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Home » Problems (hard)
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problems, and submit your 
										
					solution in the language of your choice
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  • Easy
  • Medium
  • Hard
  • Peer
Name Code Successful Submissions Accuracy
Ordering the Soldiers ORDERS 52 4.2618
Team Selection TEAMSEL 44 3.6310
Some More Homework MARCHA6 14 23.8095
Primes in the GCD table D4 14 12.3153
The Guessing Game MARCHA3 11 17.1053
Swapping mismatches C1 10 4.6809
Divide and conquer F6 9 26.3889
Highways HIGH 9 13.9241
Johny the farmer E3 8 12.1622
Baking Cupcakes MUFFINS 7 8.8608
Tidying Posters POSTERS 7 50.0000
Congruent triangles H3 6 13.8462
Traffic jam N5 6 10.5263
Buggy algorithm E5 6 50.0000
XOR Rounds RESN02 6 46.1538
Crystals FX 5 38.4615
Reaching the Rig REACHRIG 5 2.4793
Travelling Salesman Again ! TSPAGAIN 5 70.5882
Help the judge J6 4 37.2881
Permutation Jumping RESN03 4 41.6667
Motorbike Racing M2 4 26.6667
Se7en F4 3 1.2876
The Turing Music Box TMBOX 3 88.8889
Magic Strings J5 3 47.0588
The Mine Field M1 3 57.1429
The Secret Fellowship of Byteland BFORG 3 27.2727
The Bytelandian Union A8 3 5.1724
The Reversed World REVERSED 3 45.4545
Packing the Boxes A5 2 14.2857
Adding Least Common Multiples LCM 2 7.3171
Lights Out DORADM01 2 15.0000
A Christmas Pizza Puzzle A7 2 42.8571
Box Packers INSOMB4 2 22.2222
Rearranging Digits ARRANGE2 2 2.6316
The Burning City BURNCITY 2 66.6667
Chemical reactions G5 2 21.7391
Graph Counting GRAPHCT 2 100.0000
The Game of Crosses & Crosses CROSSES 2 20.0000
Alternating Permutations SNCK03 2 25.0000
Backup Functions FUNCTION 2 13.3333
Wildcard Matching L2 2 7.6923
Powerful Strongholds SNCK02 2 28.5714
Toll Trolls M4 1 16.6667
Place the balloon L5 1 11.1111
Alien Clock D7 1 10.0000
Effective Sets J4 1 3.5714
Heroes of Magical Might N2 1 50.0000
Pack the balls in a box! DX 1 60.0000
Falling Snow INSOMB8 1 33.3333
Alien language G4 1 2.9412
Genetics GENETICS 1 42.8571
Place the mines! MARCHAX 1 33.3333
Mosaic GX 1 33.3333
Park tour KX 0 0.0000
Rotation Puzzle STORO 0 0.0000
Overlapping discs M5 0 0.0000
Generalized Spanning Trees GST 0 0.0000
Stepping Numbers STEPNUMS 0 0.0000
Bytelandian Telecom BYTELE 0
The Archipelago ARCHPLG 0 0.0000
Lighting the shop LIGHTING 0 0.0000
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RECENT COMMENTS

11:11 PM Sep 2nd: atul commented on Trees Again:   @ govardhan reddy your example does not satisfy the property of tree
10:33 PM Sep 2nd: ishan dutta commented on Bytelandian Shoppers: "every item is brought by atleast one person".How can one single item be bought by...
10:30 PM Sep 2nd: vishal gupta commented on Cipher: give some more good test cases.....
10:28 PM Sep 2nd: vishal gupta commented on Cipher: wht the hell..!! prog. is taking all cases on my compiler but still getting wrong ...
09:49 PM Sep 2nd: govardhan reddy commented on Trees Again: How many subtrees should i get for the following test case:  ( Tell if this case ...
09:24 PM Sep 2nd: ankit anand commented on Cipher: giver some more testcases
08:47 PM Sep 2nd: govardhan reddy commented on Trees Again: A directed tree is a directed graph which would be a tree if the directions ...
07:57 PM Sep 2nd: Admin commented on Bytelandian Shoppers: @ashish: You are not allowed to discuss the complexity of the solution during the ...
06:53 PM Sep 2nd: varun sapra commented on Cipher: my program is satisfying all the test cases.....but it is still being evaluated as...
06:42 PM Sep 2nd: Ravi Maggon commented on Cipher: Look i am giviny you the logic of what exactly you have to do. From a given input...
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