Problems

Pick a problem and write your solution in the built-in editor. The judge runs it against real test cases while you watch, and the wider archive is open to read whenever you like.

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Total results21,446 problems

DigestaUnrated
Not classified yetNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Curious ShiftUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
KingdomUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
AuthorityUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Keep in TouchUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Make an XUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Make an X (Hard)Unrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Predicting the grassUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
String TowerUnrated
Not classified yetNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Two-dimensional arrayUnrated
Not classified yetNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Chocolate and the King GameUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Odd/Even StringsUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Check ListUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
SGA PresidentUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
I Love You, YonseiUnrated
Not classified yetNo attempts yetTime limit1.885sMemory limit1024 MB
Judgeable
Interplanetary Study MeetingUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Unbroken Spirit 3Unrated
Not classified yetNo attempts yetTime limit6sMemory limit1024 MB
Judgeable
Vertical CalendarUnrated
Not classified yetNo attempts yetTime limit1sMemory limit512 MB
Judgeable
Alternating AlgorithmUnrated
Not classified yetNo attempts yetTime limit7sMemory limit1024 MB
Judgeable
Big Data? Information Security!Unrated
Not classified yetNo attempts yetTime limit1sMemory limit256 MB
Judgeable
Vigenère Cipher DecryptionUnrated
Not classified yetNo attempts yetTime limit1.5sMemory limit256 MB
Judgeable
Bank Robbery 2Unrated
Not classified yetNo attempts yetTime limit1sMemory limit256 MB
Judgeable
A Prickly Problem: Black EditionUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
AdriaUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
DominoUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
FrizuraUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
GameUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Students and MentorsUnrated
Not classified yetNo attempts yetTime limitNot setMemory limit1024 MB
Judgeable
Pizza DeliveryUnrated
Not classified yetNo attempts yetTime limit20sMemory limit1024 MB
Judgeable
Happy SubarraysUnrated
Not classified yetNo attempts yetTime limit25sMemory limit1024 MB
Judgeable
Running in CirclesUnrated
Not classified yetNo attempts yetTime limitNot setMemory limit1024 MB
Judgeable
Magical Well of LiliesUnrated
Not classified yetNo attempts yetTime limit15sMemory limit1024 MB
Judgeable
ElectricityUnrated
Not classified yetNo attempts yetTime limit40sMemory limit1024 MB
Judgeable
1-Player ConcentrationUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Greatest common divisorUnrated
Not classified yetNo attempts yetTime limit8sMemory limit1024 MB
Judgeable
PINUnrated
Not classified yetNo attempts yetTime limit0.2sMemory limit1024 MB
Judgeable
RykiUnrated
Not classified yetNo attempts yetTime limit8sMemory limit1024 MB
Judgeable
SkwarkiUnrated
Not classified yetNo attempts yetTime limit3sMemory limit256 MB
Judgeable
Alps Cable CarUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
ToysUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Concurrent ProgrammingUnrated
Not classified yetNo attempts yetTime limit9sMemory limit1024 MB
Judgeable
CatfishUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
Great Thermion ColliderUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
High-Heeled Flip-FlopsUnrated
Not classified yetNo attempts yetTime limit2sMemory limit1024 MB
Judgeable
PawnsUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable
Strong NumbersUnrated
Not classified yetNo attempts yetTime limit1sMemory limit1024 MB
Judgeable

Title	Level	Topics	Solved	Time limit	Memory limit	Judge
Digesta	Unrated	Not classified yet	No attempts yet	1s	512 MB	Judgeable
Curious Shift	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Kingdom	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Authority	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
Keep in Touch	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Make an X	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Make an X (Hard)	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Predicting the grass	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
String Tower	Unrated	Not classified yet	No attempts yet	1s	512 MB	Judgeable
Two-dimensional array	Unrated	Not classified yet	No attempts yet	1s	512 MB	Judgeable
Chocolate and the King Game	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Odd/Even Strings	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Check List	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
SGA President	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
I Love You, Yonsei	Unrated	Not classified yet	No attempts yet	1.885s	1024 MB	Judgeable
Interplanetary Study Meeting	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
Unbroken Spirit 3	Unrated	Not classified yet	No attempts yet	6s	1024 MB	Judgeable
Vertical Calendar	Unrated	Not classified yet	No attempts yet	1s	512 MB	Judgeable
Alternating Algorithm	Unrated	Not classified yet	No attempts yet	7s	1024 MB	Judgeable
Big Data? Information Security!	Unrated	Not classified yet	No attempts yet	1s	256 MB	Judgeable
Vigenère Cipher Decryption	Unrated	Not classified yet	No attempts yet	1.5s	256 MB	Judgeable
Bank Robbery 2	Unrated	Not classified yet	No attempts yet	1s	256 MB	Judgeable
A Prickly Problem: Black Edition	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Adria	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Domino	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Frizura	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Game	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
Students and Mentors	Unrated	Not classified yet	No attempts yet	Not set	1024 MB	Judgeable
Pizza Delivery	Unrated	Not classified yet	No attempts yet	20s	1024 MB	Judgeable
Happy Subarrays	Unrated	Not classified yet	No attempts yet	25s	1024 MB	Judgeable
Running in Circles	Unrated	Not classified yet	No attempts yet	Not set	1024 MB	Judgeable
Magical Well of Lilies	Unrated	Not classified yet	No attempts yet	15s	1024 MB	Judgeable
Electricity	Unrated	Not classified yet	No attempts yet	40s	1024 MB	Judgeable
1-Player Concentration	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
Greatest common divisor	Unrated	Not classified yet	No attempts yet	8s	1024 MB	Judgeable
PIN	Unrated	Not classified yet	No attempts yet	0.2s	1024 MB	Judgeable
Ryki	Unrated	Not classified yet	No attempts yet	8s	1024 MB	Judgeable
Skwarki	Unrated	Not classified yet	No attempts yet	3s	256 MB	Judgeable
Alps Cable Car	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Toys	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Concurrent Programming	Unrated	Not classified yet	No attempts yet	9s	1024 MB	Judgeable
Catfish	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
Great Thermion Collider	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
High-Heeled Flip-Flops	Unrated	Not classified yet	No attempts yet	2s	1024 MB	Judgeable
Pawns	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable
Strong Numbers	Unrated	Not classified yet	No attempts yet	1s	1024 MB	Judgeable