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Home » Practice(challenge)
Try your hand at one of the practice
         problems, and submit your solution in the language of your choice
         (our judge accepts solutions in over 35+ languages). Receive points,
         and move up through the CodeChef ranks. Get better, and better prepare
         yourself for the competitions
  • Easy
  • Medium
  • Hard
  • Challenge
  • Peer
Name Code Successful Submissions Accuracy
Sudoku Solver NSUDOKU 80 30.68
Help the DJ JX 40 43.84
Similar Graphs SIMGRAPH 24 81.52
Killing Gs CKROACH 20 94.03
Crystals FX 19 65.63
Forces in the crystal HX 19 40
The Great Plain LAND 16 43.1
Longest Common Subsequence TLCS 14 5.53
Lights Off, Revisited! EX 13 55.17
Optimizing Production and Sales FACTORY 13 47.37
Coloring Colorable Graphs THREECLR 13 36.73
Pricing Tollbooths TOLLS 12 98.09
Large Kitchen KITCHEN 12 55
Block Tower BLOCKS 11 42.11
Tom And Jerry TOMJERRY 10 84.62
Stepping Average STEPAVG 10 65.71
Complex Spanning Tree COMPLEXT 8 61.54
Graph Challenge GRAPHCH 8 57.89
The Turing Music Box TMBOX 7 92.31
Bickering Cooks BICKER 7 67.27
The Secret Fellowship of Byteland BFORG 7 38.71
Food Shortage in Byteland BYTEFOOD 7 52.63
Sorting device MX 6 77.78
Splitting Giant Subs SPLIT 6 73.68
The Game of Crosses & Crosses CROSSES 5 43.75
Smart Chef vs Evil Chef SMVSEVIL 5 52.94
Bubbles BX 5 46.15
Jawbreaker LX 5 61.54
The Burning City BURNCITY 5 71.43
Spinning Wheels SPIN 5 60
Place the mines! MARCHAX 4 55.56
Flood FLOOD 4 55.56
Bytelandian Telecom BYTELE 4 83.33
Best board fill CX 4 33.33
The Best Tower NX 4 16
Integer Combinations Of Vectors INTCOMB 3 42.86
Pack the balls in a box! DX 3 53.85
Mushroom Cave CAVE 3 72.73
Cake Production Line CAKES 3 66.67
Rotation Puzzle STORO 2 3.64
Delivering Bread DELIVERY 2 100
Mosaic GX 2 60
Ambidextrous Chefs AMBIDEX 2 28.57
The Amazing All-In-One Cooking Machine - Challenge ALLINONE 1 100
Table Tilt TILT 1 11.11
Park tour KX 1 14.29
Graphs in Euclidean Space L2GRAPH 1 25

Directi Go for Gold

RECENT COMMENTS FOR THIS SECTION:

03:23 PM Apr 7th: mtutnid commented on Forces in the crystal: I see successful submissions that take up to 147.27 s to complete. The time limit ...
05:25 PM Mar 15th: vranjith2107 commented on Sudoku Solver: You clearly haven't bothered to read the question. This problem is not about findi...
01:41 PM Feb 6th: niteshgusty commented on Sudoku Solver: How to take inputs in case of php
05:05 PM Jan 21st: dollar commented on Sudoku Solver: My program sucessfully runs in my pc. I use turboc3 compiler. When I post my progr...
02:42 AM Dec 30th: cyberax commented on Longest Common Subsequence: ???? how is the score calculated ?
06:47 PM Dec 17th: cyberax commented on Delivering Bread: "Every algorithm I have made so far, is unable to deal with cycles in the graph." ...
06:28 AM Dec 14th: cyberax commented on Help the DJ: @atris: "We shall first start by creating an initial playlist.The playlist shall b...
02:38 PM Dec 13th: mr777 commented on Table Tilt: @Admins: Will it move only single ball or say there is +-%* and when we tilt right...
12:28 PM Dec 12th: mr777 commented on Rotation Puzzle: Who will give the 2X2 grid and tell about the rotation, either clock wise or antic...
08:12 AM Dec 12th: cyberax commented on Sudoku Solver: @admin: i'm getting TLE for a very simple code in Python that puts 1 on every unkn...
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CodeChef - A Platform for Aspiring Programmers

CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming and programming contests. At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and another smaller programming challenge in the middle of the month. We also aim to have training sessions and discussions related to algorithms, binary search, technicalities like array size and the likes. Apart from providing a platform for programming competitions, CodeChef also has various algorithm tutorials and forum discussions to help those who are new to the world of computer programming.

Practice Section - A Place to hone your 'Computer Programming Skills'

Try your hand at one of our many practice problems and submit your solution in a language of your choice. Our programming contest judge accepts solutions in over 35+ programming languages. Preparing for coding contests were never this much fun! Receive points, and move up through the CodeChef ranks. Use our practice section to better prepare yourself for the multiple programming challenges that take place through-out the month on CodeChef.

Compete - Monthly Programming Contests and Cook-offs

Here is where you can show off your computer programming skills. Take part in our 10 day long monthly coding contest and the shorter format Cook-off coding contest. Put yourself up for recognition and win great prizes. Our programming contests have prizes worth up to Rs.20,000 and $700lots more CodeChef goodies up for grabs.

Discuss

Are you new to computer programming? Do you need help with algorithms? Then be a part of CodeChef's Forums and interact with all our programmers - they love helping out other programmers and sharing their ideas. Have discussions around binary search, array size, branch-and-bound, Dijkstra's algorithm, Encryption algorithm and more by visiting the CodeChef Forums and Wiki section.

CodeChef Community

As part of our Educational initiative, we give institutes the opportunity to associate with CodeChef in the form of Campus Chapters. Hosting online programming competitions is not the only feature on CodeChef. You can also host a coding contest for your institute on CodeChef, organize an algorithm event and be a guest author on our blog.

Go For Gold

The Go for Gold Initiative was launched about a year after CodeChef was incepted, to help prepare Indian students for the ACM ICPC World Finals competition. In the run up to the ACM ICPC competition, the Go for Gold initiative uses CodeChef as a platform to train students for the ACM ICPC competition via multiple warm up contests. As an added incentive the Go for Gold initiative is also offering over Rs.8 lacs to the Indian team that beats the 29th position at the ACM ICPC world finals. Find out more about the Go for Gold and the ACM ICPC competition here.

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