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Problem Category Points AC % ▾ Users
DMOPC '20 Contest 5 P4 - Slacking Off DMOPC 15p 13.5% 82
NOIP '20 P2 - String Matching China NOI 12p 13.5% 10
DMOPC '17 Contest 5 P3 - Mimi and Primes DMOPC 7p 13.5% 421
VMSS Pre-Pre-Windsor P5 - Productive Math Class Uncategorized 5 13.5% 52
DMOPC '16 Contest 1 P6 - Phantom Child DMOPC 20p 13.5% 9
New Year's '18 P7 - Tree of Life Seasonal 20p 13.5% 32
DMPG '19 S4 - Confusing Crossword Conundrum DMOPC 12p 13.5% 38
NOI '07 P5 - Counting Spanning Trees China NOI 30p 13.5% 11
Olympic Scoring Uncategorized 3 13.5% 127
CCO Preparation Test 7 P2 - XOR Path Mock CCO 20p 13.5% 16
IOI '21 P1 - Distributing Candies IOI 30p 13.4% 29
IOI '09 P1 - Archery IOI 45p 13.4% 37
Mock CCC '22 1 S1 - Big Mattress Tournament Mock CCC 5p 13.4% 206
IOI '20 P4 - Packing Biscuits IOI 25p 13.4% 15
WC '16 Contest 4 S4 - Hopps and Wilde on the Case Woburn Challenge 15p 13.4% 18
An Animal Contest 6 P3 - OAC AAC 12p 13.4% 107
WC '18 Contest 2 S2 - Plutonium Woburn Challenge 12p 13.4% 73
IOI '05 P3 - Mountain IOI 20p 13.4% 297
IOI '15 P1 - Boxes with Souvenirs IOI 15p 13.4% 98
IOI '99 P6 - A Strip of Land IOI 20p 13.4% 34
LKP '18 Contest 1 P4 - Fun in Föràg Uncategorized 15p 13.4% 254
DMOPC '14 Contest 6 P3 - Streetcars DMOPC 7p 13.3% 65
Baltic OI '16 P3 - Spiral Baltic OI 30p 13.3% 4
What a Niche Uncategorized 10p 13.3% 16
Super Boggle Uncategorized 15p 13.3% 6
Baltic OI '13 P3 - Pipes Baltic OI 25p 13.3% 4
IOI '04 P5 - Farmer IOI 15p 13.3% 210
SGS Programming Challenge P1 - XOR in Computer Class Uncategorized 7p 13.3% 156
DWITE '07 R1 #5 - Velociraptor Maze DWITE 7 13.3% 42
ECOO '17 R1 P3 - Mountain View ECOO 7p 13.3% 72
DMPG '17 B6 - Multiply and Surrender DMOPC 7p 13.3% 68
Singularity Cup P4 - Staircase Sum Uncategorized 17p 13.3% 65
COCI '07 Contest 1 #4 Zapis COCI 15p 13.3% 132
WC '96 P2 - Row and Column Woburn Challenge 7 13.3% 35
Mock CCC '24 Contest 1 J3 - RGB Words Mock CCC 5p 13.3% 187
TLE '17 Contest 8 P6 - Willson and Nesting Season TLE 25p 13.3% 7
DMPG '19 S5 - Secret Sort DMOPC 12p 13.3% 7
Back To School '19: Chemistry Seasonal 7p 13.2% 96
Good Celebration Uncategorized 12 13.2% 26
IOI '13 P3 - Wombats IOI 40p 13.2% 38
COCI '06 Contest 6 #4 Kamen COCI 15p 13.2% 44
NOIP '07 P2 - Expanding Strings China NOI 5p 13.2% 20
Lyndon's Golf Contest 1 P4 - Symbolic Ruby Uncategorized 0p 13.2% 18
COCI '06 Contest 3 #6 Lista COCI 20p 13.2% 73
GFSSOC '15 Winter J4 - Christmas Music GFSSOC 5p 13.2% 22
DMOPC '18 Contest 5 P4 - An Art Gallery Problem DMOPC 12p 13.2% 73
Back To School '16: Screensaver Seasonal 10 13.2% 97
UTS Open '21 P5 - State Taxes Uncategorized 17p 13.2% 42
DMOPC '21 Contest 2 P6 - Strange Function DMOPC 30p 13.2% 10
UCRPC F21 E - Feeding Friendsy ICPC 7p 13.2% 20