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Problem Category Points AC % Users ▾
Brazilian IOI TST '19 Day 1 - Secret Santa Brazil OI 17p 20.5% 22
Magic Maze Uncategorized 17p 17.0% 22
Bitmask Magic Uncategorized 15p 30.0% 22
WC '15 Finals S1 - Fuzzbiz Woburn Challenge 7p 20.3% 22
WC '16 Contest 3 S4 - Replay Value Woburn Challenge 15p 14.7% 22
WC '98 P3 - Do or Do Not Woburn Challenge 10 35.3% 22
DMOJ Capture The Flag '20 F3 - Four Taps CTF 7 44.2% 22
System Solver Uncategorized 15 10.6% 22
Balkan OI '11 P6 - Trapezoids Balkan OI 20p 26.3% 22
COCI '10 Contest 3 #4 Znanstvenik COCI 7p 41.8% 22
COCI '16 Contest 3 #5 Zoltan COCI 15p 15.7% 22
COCI '11 Contest 6 #5 Pastele COCI 12p 26.0% 22
COCI '12 Contest 4 #4 Razlika COCI 12p 39.4% 22
NOI '15 P3 - Sushi Dinner China NOI 25p 12.5% 22
NOI '21 P4 - Quantum Communication China NOI 25p 9.4% 22
COI '15 #4 Torrent COCI 25p 35.2% 22
Cheerio Contest 1 J5 - Arithmetic Sequence Uncategorized 10p 5.6% 22
Baltic OI '06 P6 - Jump Baltic OI 7p 15.3% 22
Another Contest 9 Problem 4 - Alchemy ACC 10 13.0% 22
Cheerio Contest 2 P5 - Subsequence Queries Uncategorized 7p 27.4% 22
NOIP '07 P3 - Removing Numbers from Matrix China NOI 15p 20.4% 22
DMOPC '22 Contest 3 P4 - Sketchy Cereal DMOPC 30p 4.9% 22
COCI '22 Contest 4 #4 Mreža COCI 20p 17.4% 22
DMOPC '22 Contest 5 P4 - Ricochet DMOPC 17p 7.8% 22
COCI '23 Contest 3 #2 Vrsar COCI 10p 13.3% 22
Facebook Hacker Cup '15 Round 2 P4 - Fox Socks FHC 30 10.3% 21
MEC '16 P4 - Circuitry Seasonal 15p 16.2% 21
A Simple Mode Uncategorized 7p 12.8% 21
ICPC ECNA 2016 F - Removal Game ICPC 20 34.6% 21
New Year's '17 P7 - Santa's Deliveries Seasonal 25p 20.1% 21
Waterloo 2017 Winter C - Vera and Mean Sorting Waterloo Local 10 31.1% 21
Bubble Cup V9 C Paint it really, really black Bubble Cup 10 15.4% 21
ECOO '14 R3 P1 - Substitute Teacher ECOO 5p 46.7% 21
DWITE '08 R2 #3 - My drink is made of cubes DWITE 5 38.1% 21
DWITE '12 R5 #5 - Pattern Lock DWITE 7 47.7% 21
DWITE '08 R5 #2 - Kill Dash Nine DWITE 5 50.0% 21
Mock CCO '18 Contest 2 Problem 2 - Victor Rains Mock CCO 20p 27.7% 21
COCI '18 Contest 2 #5 Sunčanje COCI 25p 15.1% 21
IOI '07 P1 - Aliens IOI 12p 15.3% 21
CEOI '17 P6 - Chase CEOI 30p 18.3% 21
K-Dimensional Grids Uncategorized 15p 27.7% 21
CCO '97 P1 - Palindromes CCO 10 11.1% 21
Road Redirection Uncategorized 17 28.0% 21
Wesley's Anger Contest 4 Problem 6 - Hungry Squirrels WAC 25p 15.9% 21
COCI '15 Contest 7 #2 Prozor COCI 7p 37.9% 21
COCI '16 Contest 1 #6 Vještica COCI 15p 58.1% 21
NOI '03 P1 - Stick Game China NOI 15p 21.1% 21
ICPC NEERC 2010 A - Alignment of Code ICPC 7 54.0% 21
SMAC 08/09 (Nov) #5 - Intelligent Stats Uncategorized 10p 40.7% 21
WC '17 Contest 3 J4 - Meme Generator Woburn Challenge 7 20.3% 21