Problems

Problem Category Points AC % Users ▾
CCCHK '15 J1 - Rock-paper-scissors CCC 3 51.7% 575
The Mirror Fun Math 5 33.3% 572
CCC '09 S2 - Lights Going On and Off CCC 10 41.1% 572
Disjoint Set Test Data Structure Tests 10 36.9% 570
BlueBook - Direction BlueBook 3 40.2% 569
Longest Common Subsequence Classics 7 40.4% 568
Interleaving Leaves Uncategorized 5 52.9% 568
Uneven Sand Uncategorized 5 24.2% 567
DMOPC '13 Contest 1 P4 - AFK DMOPC 7p 26.4% 565
CCCHK '08 J2 - Lucky Number CCC 3 25.9% 565
COCI '09 Contest 1 #1 Note COCI 3 53.5% 548
CCC '08 J4 - From Prefix to Postfix CCC 7 44.6% 543
CCC '96 S3 - Pattern Generator CCC 5 31.1% 543
IOI '01 P1 - Mobile Phones IOI 15p 26.7% 543
WC '16 Contest 1 J1 - A Spooky Season Woburn Challenge 3 53.6% 537
CCC '96 S5 - Maximum Distance CCC 7 49.5% 532
Binary Indexed Tree Test Data Structure Tests 10p 28.1% 531
CCC '05 S5 - Pinball Ranking CCC 15p 14.8% 524
Word Scrambler Uncategorized 7 51.4% 523
A Noisy Class Uncategorized 7 27.7% 521
Fibonacci Sequence Fun Math 15p 12.5% 520
Bubble Sort Uncategorized 7 34.1% 520
Chocolate Bar Uncategorized 5 51.1% 519
Knapsack 1 Uncategorized 7p 23.3% 518
COCI '08 Contest 3 #1 Pet COCI 5 56.8% 516
COCI '06 Contest 5 #1 Trik COCI 3 50.9% 512
CCC '08 S5 - Nukit CCC 10p 35.0% 509
CCC '05 S4 - Pyramid Message Scheme CCC 10 35.3% 509
DMOPC '14 Contest 6 P2 - Longest Tunnel DMOPC 3p 68.7% 506
Simon and Marcy Seasonal 7p 52.4% 503
Maximum Sum Uncategorized 7 32.0% 503
BlueBook - Column of Numbers BlueBook 3 40.4% 503
CCC '02 S3 - Blindfold CCC 5 50.2% 501
Mock CCC '19 Contest 1 S1 - Pusheen's Report Card Mock CCC 3p 39.7% 500
Mock CCC '19 Contest 1 J2 - Pusheen OCR Mock CCC 3p 52.9% 498
WC '15 Contest 2 J1 - A New Hope Woburn Challenge 3 49.0% 495
CCCHK '08 J1 - Best fish CCC 3 36.1% 492
DMOPC '16 Contest 1 P0 - C.C. and Cheese-kun DMOPC 3p 39.4% 491
COCI '07 Contest 2 #1 Bijele COCI 3 65.0% 491
DMOPC '15 Contest 1 P1 - Itami and Manga DMOPC 3p 47.3% 488
Water Uncategorized 3 63.2% 488
Lexicographically Least Substring Uncategorized 5 45.7% 486
Infinity Fun Math 3 34.6% 485
Marathon GFSSOC 7p 34.0% 482
CCC '13 S5 - Factor Solitaire CCC 15p 42.5% 481
Mock CCC '19 Contest 2 J1 - Tudor Drinks Some Tea Mock CCC 3p 50.4% 481
CCO '14 P1 - Troyangles CCO 10p 36.4% 477
DMOPC '14 Contest 1 P1 - Median Mark DMOPC 5p 20.0% 476
COCI '06 Contest 1 #2 Herman COCI 5 42.4% 475
BlueBook - Powers of 2 BlueBook 3 32.7% 474