Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▴ Users
GFSSOC '15 Fall S1 - T-Shirts GFSSOC 5p 23.6% 87
IOI '96 P3 - Network of Schools IOI 12p 23.7% 83
CCO '98 P5 - Text Segmentation CCO 10 23.7% 18
COCI '21 Contest 1 #4 Set COCI 35p 23.7% 9
DMOPC '22 Contest 5 P1 - Triple Triplets DMOPC 5p 23.7% 227
Modern Art Uncategorized 17p 23.7% 15
Disclosure Uncategorized 10 23.7% 97
NOI '07 P6 - Thief Catching China NOI 40p 23.7% 4
VM7WC '15 #5 Gold - Tree Planting VM7WC 12 23.7% 232
ICPC PACNW 2016 H - Paint ICPC 7 23.7% 144
SMAC 08/09 (Nov) #1 - Befungulator Uncategorized 10 23.8% 20
DMOPC '15 Contest 5 P5 - World Line Convergence DMOPC 15p 23.8% 104
CCC '04 S5 - Super Plumber CCC 10p 23.8% 402
HCI '16 - Xorpow Uncategorized 10p 23.8% 76
COCI '08 Contest 5 #2 Jabuka COCI 5 23.8% 94
SAC '22 Code Challenge 3 P4 - Finding Friends SAC Coding Challenge 15p 23.8% 64
COCI '10 Contest 7 #2 Kolo COCI 5p 23.8% 71
NOI '03 P2 - Text Editor China NOI 10p 23.8% 40
DMOPC '21 Contest 2 P2 - Scrambling Swaps DMOPC 7p 23.8% 184
New Year's '15 P6 - Tiles Seasonal 20p 23.8% 26
JOI '19 Open P2 - Remittance JOI 30p 23.8% 12
Triangles Uncategorized 30p 23.8% 3
Death Gun Seasonal 7p 23.8% 294
Castle Invasion Uncategorized 10p 23.8% 130
WC '99 P6 - Fight Club Woburn Challenge 10 23.8% 38
COCI '08 Contest 1 #4 Jez COCI 20p 23.8% 24
CTU Open Contest 2017 - Amusement Anticipation ICPC 5 23.9% 30
Appleby Contest '20 P2 - Playful Playdoughs Uncategorized 5p 23.9% 339
COCI '21 Contest 4 #3 Izbori COCI 17p 23.9% 36
CCO '10 P3 - Wowow CCO 15p 23.9% 282
A Math Contest P11 - Weak Goldbach's Conjecture Uncategorized 15 23.9% 58
SMAC 08/09 (Nov) #3 - Factor Game Uncategorized 15 23.9% 49
GFSSOC '15 Fall Practice P4 - Bruno and Fibonacci GFSSOC 5p 23.9% 235
CCC '03 J2 - Picture Perfect CCC 3p 23.9% 1614
ECOO '19 R2 P2 - Pizza ECOO 10p 23.9% 22
ECOO '12 R1 P3 - Triangles ECOO 5p 23.9% 30
COCI '19 Contest 1 #2 Lutrija COCI 12 23.9% 72
APIO '11 P3 - Guess My Word! APIO 30p 23.9% 8
ECOO '15 R1 P2 - Word Wrap ECOO 10p 24.0% 144
IOI '18 P3 - Werewolf IOI 30p 24.0% 57
WC '18 Finals S4 - Posters Woburn Challenge 20p 24.0% 6
DMOPC '22 Contest 1 P2 - Hat Swap DMOPC 10p 24.0% 228
DMPG '18 S6 - Mimi and Carrots DMOPC 17p 24.0% 22
Bus Stops Uncategorized 10 24.0% 27
Bubble Cup V11 A Splitting Money Bubble Cup 7 24.0% 27
CCO '12 P5 - Sample Size CCO 7 24.0% 171
HopScotch II Classics 12p 24.0% 177
TLE '16 Contest 5 P1 - English Proficiency Exam TLE 3p 24.0% 109
COCI '19 Contest 2 #5 Zvijezda COCI 20p 24.0% 31
A Romantic Dinner Outing Uncategorized 20 24.0% 18