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Problem Category Points AC % Users ▴
CCO '99 P1 - You Can't Get There From Here CCO 7 26.5% 16
Mock CCO '19 Contest 1 Problem 6 - A Geometry Problem Mock CCO 15p 27.2% 16
CCO '02 P3 - Return To Blind Man's Bluff CCO 12 12.2% 16
CCO '23 P5 - Travelling Trader CCO 30p 7.9% 17
CCO '98 P5 - Text Segmentation CCO 10 23.7% 18
CCO '23 P6 - Triangle Collection CCO 25p 16.7% 18
CCO '99 P4 - Maple Roundup CCO 10 21.8% 19
CCO Preparation Test 3 P1 - Primitive Pythagorean Pairs Mock CCO 25p 13.7% 20
CCO '98 P2 - Message Deciphering CCO 7 51.9% 20
Mock CCO '18 Contest 2 Problem 2 - Victor Rains Mock CCO 20p 27.7% 21
CCO '97 P1 - Palindromes CCO 10 11.0% 21
Mock CCO '18 Contest 2 Problem 4 - Victor's Rectangles Mock CCO 20p 21.9% 22
CCO '09 P1 - Invasion of the Boxes CCO 20p 12.8% 22
CCO '02 P1 - Spam CCO 12 49.1% 22
CCO '23 P3 - Line Town CCO 30p 10.4% 22
Mock CCO '18 Contest 3 Problem 2 - Roger Delegates Work to Jessica Mock CCO 20p 28.9% 23
The Contest Contest 1 P5 - A Typical CCO Problem Uncategorized 20p 4.2% 24
Mock CCO '17 Problem 6 - Dire Consequences Mock CCO 20 24.2% 25
CCO '20 P3 - Mountains and Valleys CCO 35p 5.8% 25
Mock CCO '19 Contest 2 Problem 6 - A Fundraising Problem Mock CCO 12p 15.8% 28
CCO '05 P6 - Windows CCO 30p 14.2% 28
CCO '22 P3 - Double Attendance CCO 25p 7.6% 28
CCO '96 P6 - Hoppers CCO 15 15.5% 29
CCO '01 P5 - Fast Food CCO 7 10.1% 29
CCO '22 P4 - Bi-ing Lottery Treekets CCO 20p 20.6% 29
CCO '03 P2 - Concentration Cards CCO 15 36.1% 31
CCO '22 P5 - Phone Plans CCO 20p 12.7% 31
CCO Preparation Test 2 P1 - Concatenation Mock CCO 17p 13.1% 32
Mock CCO '18 Contest 3 Problem 3 - Roger Just Plays Some More Chess Mock CCO 20p 12.3% 33
CCO '17 P6 - Shifty Grid CCO 30p 17.8% 34
CCO '09 P3 - Beware the Geoducks CCO 10 9.8% 34
Mock CCO '18 Contest 4 Problem 5 - Spawn More Overlords Mock CCO 20p 24.8% 35
CCO '02 P2 - Game Show Math CCO 12 21.4% 35
CCO '06 P2 - R & J CCO 10 20.8% 35
CCO '01 P4 - Breaking Level (Standard I/O) CCO 12 7.8% 35
Mock CCO '18 Contest 4 Problem 6 - Splitting Drones Mock CCO 15p 34.6% 37
CCO '09 P4 - Bottle Caps CCO 20p 14.2% 37
Mock CCO '17 Problem 3 - Connection Mock CCO 20p 12.5% 38
Mock CCO '18 Contest 4 Problem 2 - Sunken Colonies Mock CCO 15p 43.5% 38
CCO '02 P4 - Duathlon CCO 10 11.3% 38
CCO Preparation Test 1 P2 - Escape Maze Mock CCO 20p 12.0% 39
CCO Preparation Test 2 P3 - Subsets Mock CCO 20p 16.7% 39
CCO '08 P6 - Landing CCO 45 20.2% 40
Mock CCO '18 Contest 4 Problem 1 - Mining for Minerals Mock CCO 15p 14.2% 40
CCO '20 P6 - Shopping Plans CCO 30p 9.2% 40
CCO '04 P6 - Orko CCO 15 31.6% 42
CCO '09 P5 - Parade CCO 17p 17.3% 43
CCO '05 P2 - The Great Spamway Strike CCO 20 40.8% 43
Mock CCO '18 Contest 2 Problem 1 - Victor Runs Mock CCO 15p 16.5% 44
CCO '04 P4 - Return of Space Turtle CCO 12 14.2% 46