Problems Problem search Full text search Show problem types Category All --- ACM-ICPC APIO Bubble Cup CCC CCO CEOI Classics COCI CSPC Data Structure Tests DMOPC DWITE ECOO FHC Fun Math GCJ GFSSOC IOI JOI Mock CCC MWC Seasonal TLE TSOC Uncategorized VM7WC GoRandom Hot problems Python Infinite Loop CCC '16 S2 - Tandem Bicycle CCC '14 S1 - Party Invitation Lexicographically Least Substring Back To School '17: Physics CCC '14 S3 - The Geneva Confection « 1 2 3 4 5 6 ... 26 27 » Problem Category Points AC % Users CCC '03 S5 - Trucking Troubles CCC 12p 21.2% 121 CCC '04 J1 - Squares CCC 3 30.5% 918 CCC '04 J2 - Terms of Office CCC 3 34.7% 468 CCC '04 J3 - Smile with Similes CCC 3 58.7% 415 CCC '04 J4 - Simple Encryption CCC 5 46.8% 172 CCC '04 J5 - Fractals CCC 10 30.7% 33 CCC '04 S1 - Fix CCC 5 29.3% 30 CCC '04 S2 - TopYodeller CCC 5 71.8% 4 CCC '04 S3 - Spreadsheet CCC 10 80.0% 3 CCC '04 S4 - Space Turtle CCC 10p 42.9% 2 CCC '04 S5 - Super Plumber CCC 10p 43.8% 4 CCC '05 J1 - The Cell Sell CCC 3 22.0% 509 CCC '05 J2 - RSA Numbers CCC 3 39.2% 338 CCC '05 J3 - Returning Home CCC 5 44.4% 214 CCC '05 J4 - Cross Spiral CCC 7p 41.4% 30 CCC '05 J5 - Bananas CCC 10 18.2% 178 CCC '05 S1 - Snow Calls CCC 5 41.5% 219 CCC '05 S2 - Mouse Move CCC 5 36.0% 225 CCC '05 S3 - Quantum Operations CCC 10p 40.6% 38 CCC '05 S4 - Pyramid Message Scheme CCC 10 32.2% 61 CCC '05 S5 - Pinball Ranking CCC 15p 14.2% 184 CCC '06 J1 - Canadian Calorie Counting CCC 3 32.7% 571 CCC '06 J2 - Roll the Dice CCC 3 27.2% 373 CCC '06 J3 - Cell-Phone Messaging CCC 3 35.4% 137 CCC '06 J4 - It's tough being a teen! CCC 7 46.8% 100 CCC '06 S1 - Maternity CCC 5 32.2% 112 CCC '06 S2 - Attack of the CipherTexts CCC 5 60.6% 192 CCC '06 S3 - Tin Can Telephone CCC 12 15.2% 76 CCC '06 S4 - Groups CCC 10 36.4% 41 CCC '06 S5 - Origin of Life CCC 15p 29.2% 44 CCC '07 J1 - Who is in the Middle? CCC 3 49.7% 934 CCC '07 J2 - I Speak TXTMSG CCC 3 28.3% 410 CCC '07 J3 - Deal or No Deal Calculator CCC 3 28.7% 238 CCC '07 J5 - Keep on Truckin' CCC 5 43.5% 227 CCC '07 S1 - Federal Voting Age CCC 5 39.4% 274 CCC '07 S2 - Boxes CCC 5 22.7% 96 CCC '07 S3 - Friends CCC 10 19.9% 153 CCC '07 S4 - Waterpark CCC 10 27.0% 179 CCC '07 S5 - Bowling for Numbers CCC 10p 23.0% 116 CCC '08 J1 - Body Mass Index CCC 3 31.3% 755 CCC '08 J2 - Do the Shuffle CCC 3 41.9% 218 CCC '08 J3 - GPS Text Entry CCC 3 56.8% 123 CCC '08 J4 - From Prefix to Postfix CCC 7 43.6% 79 CCC '08 S1 - It's Cold Here! CCC 5 57.3% 288 CCC '08 S2 - Pennies in the Ring CCC 5 25.4% 146 CCC '08 S3 - Maze CCC 10 25.9% 154 CCC '08 S4 - Twenty-four CCC 10 25.3% 60 CCC '08 S5 - Nukit CCC 12p 29.9% 87 CCC '09 J1 - ISBN CCC 3 47.2% 462 CCC '09 J2 - Old Fishin' Hole CCC 5 35.5% 157 « 1 2 3 4 5 6 ... 26 27 »