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Problem Category Points AC % Users
HHPC1 P6 - Yarn Street's Strategic Shopping Uncategorized 20p 8.4% 5
CCCHK '08 J1 - Best fish CCC 3p 39.7% 920
CCCHK '08 J2 - Lucky Number CCC 3p 27.0% 971
CCCHK '08 J3 - Phone book CCC 5p 35.3% 754
CCCHK '08 J4 - Tic-tac-toe CCC 5p 12.4% 135
CCCHK '15 J1 - Rock-paper-scissors CCC 3p 52.3% 941
CCCHK '15 J2 - What is the minimum area? CCC 5p 35.4% 305
CCCHK '15 J3 - Queens can't attack me! CCC 5p 50.9% 709
CCCHK '15 J4 - Where to build my house? CCC 5p 18.9% 326
CCCHK '15 J5 - No friends in the same group. CCC 15p 10.6% 38
CCCHK '15 S1 - Finding number of pairs CCC 7p 15.4% 203
CCCHK '15 S2 - Matching Problem CCC 10p 8.0% 39
CCCHK '15 S3 - Symmetric Cross CCC 12p 22.5% 32
CCCHK '15 S4 - When to meet? CCC 15p 29.7% 29
CCCHK '15 S5 - Can I pass the courses? CCC 25p 5.3% 8
Homer Simpson Uncategorized 3 28.9% 24
HopScotch II Classics 12p 23.9% 208
Hungry Uncategorized 5p 44.7% 120
The Hu Tao Fractal Uncategorized 7p 17.0% 13
Icebergs Uncategorized 12p 19.1% 56
ICHB Selection Contest '17 Problem 1 - Airship Fights (Correct Version) Uncategorized 30p 7.7% 3
ICHB Selection Contest '17 Problem 2 - Black Star's Visit Uncategorized 7p 8.9% 28
ICHB Selection Contest '17 Problem 3 - Parallel Universe Uncategorized 12p 22.9% 168
Word Scrambler Uncategorized 5 49.9% 778
Imaginary Units Uncategorized 10p 23.8% 4
Inaho X Uncategorized 7p 33.9% 13
Inaho XI Uncategorized 5p 44.7% 32
Inaho II Uncategorized 25p 13.5% 31
Inaho III Uncategorized 17p 18.7% 33
Inaho IV Uncategorized 5p 48.7% 162
Inaho V Uncategorized 3p 19.1% 219
Inaho VI Uncategorized 10p 31.5% 44
Inaho VII Uncategorized 25p 24.6% 9
Inaho VIII Uncategorized 20 28.8% 12
Inaho IX Uncategorized 20p 26.0% 52
Infinity Uncategorized 3 35.9% 563
Cosmic Inflation Uncategorized 7 47.2% 30
Count The Triplets Uncategorized 7 11.4% 207
Intervals Uncategorized 10p 20.9% 116
Expected Inversions Uncategorized 12p 30.9% 27
A Permutation Problem 2 Uncategorized 12 30.9% 26
IOI '00 P1 - Palindrome IOI 10p 18.6% 909
IOI '00 P2 - Car Parking IOI 15p 18.0% 59
IOI '00 P4 - Walls IOI 12 36.7% 311
IOI '00 P5 - Post Office IOI 15p 41.4% 198
IOI '00 P6 - Building with Blocks IOI 20p 7.1% 8
IOI '01 P1 - Mobile Phones IOI 15p 27.4% 754
IOI '01 P2 - Ioiwari Game IOI 12p 33.6% 10
IOI '01 P3 - Twofive IOI 25p 17.3% 70
IOI '01 P6 - Depot IOI 30p 13.1% 42