PROBLEMS

Hone your programming skills with a selection of problems from previous practices, contests, and classes



Problem of the Week


Easter Eggs
Problem Name Category Website Difficulty Link Hints
hello Ad Hoc Kattis 1.1 EASY https://open.kattis.com/problems/hello
Champernowne Verification Ad Hoc Kattis 1.4 EASY https://open.kattis.com/problems/champernowneverification
Chanukah Challenge Ad Hoc Kattis 1.4 EASY https://open.kattis.com/problems/chanukah
Rampant Growth Ad Hoc Kattis 1.8 EASY https://open.kattis.com/problems/rampantgrowth
Sort of Sorting Data Structures Kattis 1.8 EASY https://open.kattis.com/problems/sortofsorting
Kitten on a Tree Data Structures Kattis 1.8 EASY https://open.kattis.com/problems/kitten
Statistcs Statistcs Kattis 1.9 EASY https://open.kattis.com/problems/statistics
Recount Data Structures Kattis 2.0 EASY https://open.kattis.com/problems/recount
Set! Combinatorics Kattis 2.1 EASY https://open.kattis.com/problems/set
Mia Ad Hoc Kattis 2.1 EASY https://open.kattis.com/problems/mia
Out of Sorts Data Structures Kattis 2.5 EASY https://open.kattis.com/problems/outofsorts
Geppetto Combinatorics Kattis 2.5 EASY https://open.kattis.com/problems/geppetto
Mastering Mastermind Ad Hoc Kattis 2.6 EASY https://open.kattis.com/problems/mastermind
Birthday Party Graphs Kattis 2.7 EASY https://open.kattis.com/problems/birthday
Eight queens Backtracking Kattis 2.8 MEDIUM https://open.kattis.com/problems/8queens
Solidus Fraction Sorting Kattis 2.8 MEDIUM https://open.kattis.com/problems/solidus
A Towering Problem Sorting Kattis 2.8 MEDIUM https://open.kattis.com/problems/towering
3D Printing Statues Ad Hoc Kattis 2.8 MEDIUM https://open.kattis.com/problems/3dprinter
Grazed Grains Geometry Kattis 2.9 MEDIUM https://open.kattis.com/problems/grazedgrains
Anagram Counting Numeric Kattis 3.0 MEDIUM https://open.kattis.com/problems/anagramcounting
Bicoloring Graphs UVA Judge 3.0 MEDIUM https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=945
Money Matters Data Structures Kattis 3.0 MEDIUM https://open.kattis.com/problems/moneymatters
Shortest paths Graphs Kattis 3.0 MEDIUM https://open.kattis.com/problems/shortestpath1
Almost Perfect Numeric Kattis 3.1 MEDIUM https://open.kattis.com/problems/almostperfect
2048 Ad Hoc Kattis 3.1 MEDIUM https://open.kattis.com/problems/2048
Popcorn Combinatorics Kattis 3.2 MEDIUM https://open.kattis.com/problems/popkorn
Paradox with Averages (Hard) Ad Hoc Kattis 3.3 MEDIUM https://open.kattis.com/problems/averageshard
Subprime Ad Hoc Kattis 3.9 MEDIUM https://open.kattis.com/problems/subprime
Adding Words Data Structures Kattis 4.0 MEDIUM https://open.kattis.com/problems/addingwords
Jigsaw Geometry Kattis 4.1 MEDIUM https://open.kattis.com/problems/jigsaw
Base-2 Palindromes Numeric Kattis 4.1 MEDIUM https://open.kattis.com/problems/base2palindrome
Freckles Graphs UVA Judge 4.2 MEDIUM https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=975
Cracker Barrel Game Graphs Kattis 4.2 MEDIUM https://open.kattis.com/problems/crackerbarrel?tab=metadata
10 kinds of people Graphs Kattis 4.2 MEDIUM https://open.kattis.com/problems/10kindsofpeople
Breakout Simulation Kattis 4.7 MEDIUM https://open.kattis.com/problems/breakout
Spiderman's Workout Dynamic Programming Kattis 4.8 MEDIUM https://open.kattis.com/problems/spiderman
A Classy Problem Sorting Kattis 4.9 MEDIUM https://open.kattis.com/problems/classy
Playing Boggle Backtracking UVA Judge 5.0 MEDIUM https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2258
Lost in Translation Graphs Kattis 5.0 MEDIUM https://open.kattis.com/problems/lost
Integer Lists Data Structures Kattis 5.0 MEDIUM https://open.kattis.com/problems/integerlists?tab=metadata
Zipf's Law Ad Hoc Kattis 5.6 HARD https://open.kattis.com/problems/zipfslaw
Digit Sum Numeric Kattis 5.8 HARD https://open.kattis.com/problems/digitsum
Fibs og Dibs Numeric Kattis 6.1 HARD https://open.kattis.com/problems/fibsogdibs
A Star not a Tree? Geometry Kattis 6.3 HARD https://open.kattis.com/problems/starnotatree
AI Jeopardy Combinatorics Kattis 6.4 HARD https://open.kattis.com/problems/aijeopardy
Fish Census Ad Hoc Kattis 6.6 HARD https://open.kattis.com/problems/fishcensus
The Trip Numeric Kattis 6.6 HARD https://open.kattis.com/problems/trip
Applications Data Structures Kattis 8.1 HARD https://open.kattis.com/problems/applications
Containers Numeric Kattis 9.4 HARD https://open.kattis.com/problems/containers