ID Problem Show tags Hide tags AC / Tried Difficulty
1173 REC  Recurrence 0 / 0 (None)
3911 RECPWSUM  Recurrence Power Sum 0 / 0 (None)
557 RECTANGL  Rectangles 0 / 0 (None)
3856 RECTANGLE  Honest Rectangle 0 / 0 (None)
1586 RECTMAT  Rectangles in a Matrix 0 / 0 (None)
144 RECTNG1  Rectangles 0 / 0 (None)
638 RECTNG2  Partitions 0 / 0 (None)
3851 REDARR2  Reduce the array 0 / 0 (None)
2210 REDCROSS  Red Cross Hospital 0 / 0 (None)
3454 REDRONESIA  Counting Words 0 / 0 (None)
3505 REDSUBLIA  Single substitutions 0 / 0 (None)
1951 REGPOLYG  Regular Convex Polygon 0 / 0 (None)
66 RELATS1  Relations 0 / 0 (None)
481 RELINETS  Reliable Nets 0 / 0 (None)
885 RELJEF  Reljef 0 / 0 (None)
577 REMGAME  Stone Removing Game 0 / 0 (None)
1881 REMOVE  Help the Airline Company 0 / 0 (None)
109 RENT  Rent your airplane and make money 0 / 0 (None)
1051 REPAIR1  Repair the Door 0 / 0 (None)
304 REPEATS  Repeats 0 / 0 (None)
653 RESIST  Kirchhof Law 0 / 0 (None)
2010 RESOURCE  Resource Management 0 / 0 (None)
2129 RESTACK  Restacking haybales 2012 0 / 0 (None)
1921 RESTAURN  Working at the Restaurant 0 / 0 (None)
2533 RETDIG  Return of the Digger 0 / 0 (None)
3201 RETRO  Retrovirus 0 / 0 (None)
3035 REVADD  Special Numbers (Reverse and Add) 0 / 0 (None)
1852 REVFIB  Revenge of Fibonacci 0 / 0 (None)
1950 REVIEW  Peer Review 0 / 0 (None)
1657 REVSEQ  Reverse the Sequence 0 / 0 (None)
3852 RGBRED  Color Play 0 / 0 (None)
103 RHOMBS  Rhombs 0 / 0 (None)
957 RIGHTTRI  Right Triangle Counting 0 / 0 (None)
2335 RIOI_2_3  Path of the righteous man 0 / 0 (None)
2368 RIOI_3_2  Counting 0 / 0 (None)
3122 RIVALS  Rivals 0 / 0 (None)
3909 RKRCTAN  The Attack Titan 0 / 0 (None)
2877 RKS  RK Sorting 0 / 0 (None)
2853 RLCAT  Robert Langdon & Class Attendance 0 / 0 (None)
2854 RLCIPHER  Robert Langdon & Cipher 0 / 0 (None)
2822 RLE  Run length encoding 0 / 0 (None)
1122 RLM  Run-Length Mathematics 0 / 0 (None)
2860 RLTHREE  Robert Langdon & The Rule of Three 0 / 0 (None)
2855 RLTOUR  Robert Langdon & Florence 0 / 0 (None)
2632 RMID  Running Median 0 / 0 (None)
2750 RMID2  Running Median Again 0 / 0 (None)
2598 RMOVIE  A Romantic Movie Outing 0 / 0 (None)
1952 RMTLAND  Remoteland 0 / 0 (None)
1346 RNDORDER  The Least Number 0 / 0 (None)
566 RNG  Random Number Generator 0 / 0 (None)
268 RNUMBER  Random Number 0 / 0 (None)
134 ROADNET  Road net 0 / 0 (None)
214 ROADS  Roads 0 / 0 (None)
1601 ROADTRIP  Road trip 0 / 0 (None)
1258 ROBBERY2  Robbery 2 0 / 0 (None)
823 ROBIN  Robintron 0 / 0 (None)
425 ROBOT  Robot Number M 0 / 0 (None)
1843 ROBOTGRI  Robots on a grid 0 / 0 (None)
3930 ROBOWORLD  Robot World 0 / 0 (None)
128 ROCK  Sweet and Sour Rock 0 / 0 (None)
149 ROCKETS  Rockets 0 / 0 (None)
2626 ROHAAN  Defend The Rohan 0 / 0 (None)
2211 ROIM  Boa viagem, Roim 0 / 0 (None)
572 ROLLBALL  The Rolling Ball 0 / 0 (None)
171 ROMAN  Converting number formats 0 / 0 (None)
2256 ROMAN008  ROMAN NUMERALS 0 / 0 (None)
558 ROMANRDS  Roman Roads 0 / 0 (None)
3247 ROOBOT  Robot 0 / 0 (None)
1401 ROOKS  Chess part1 0 / 0 (None)
606 ROOT  Root of a Linear Equation 0 / 0 (None)
1262 ROOTCIPH  Decipher 0 / 0 (None)
2240 ROT  Rescue On Time 0 / 0 (None)
2280 ROULETTD  Natalia Spins The Roulette 0 / 0 (None)
788 ROUNDT  Round Table 0 / 0 (None)
1927 ROUTING  Routing 0 / 0 (None)
489 RP  Life, the Universe, and Everything II 0 / 0 (None)
1336 RPAR  Raining Parabolas 0 / 0 (None)
259 RPGAMES  Roll Playing Games 0 / 0 (None)
2151 RPLA  Answer the boss! 0 / 0 (None)
2152 RPLB  Blueberries 0 / 0 (None)
2153 RPLC  Coke madness 0 / 0 (None)
2154 RPLD  Database 0 / 0 (None)
2155 RPLE  Espionage 0 / 0 (None)
2181 RPLG  Goto & labels 0 / 0 (None)
2182 RPLH  Hard Launching 0 / 0 (None)
2183 RPLI  Ignore the bounds 0 / 0 (None)
2184 RPLJ  Just the distance 0 / 0 (None)
2215 RPLK  Kind and gently 0 / 0 (None)
2216 RPLL  Lifesavers 0 / 0 (None)
2217 RPLM  Mountain Cave 0 / 0 (None)
2218 RPLN  Negative Score 0 / 0 (None)
744 RPS  Finding the Top RPS Player 0 / 0 (None)
1267 RPSSL  Rock-Paper-Scissors-Lizard-Spock 0 / 0 (None)
3600 RPSWAR  RPS Warfare 0 / 0 (None)
2065 RRANGE  Ranges 0 / 0 (None)
2867 RROOT  REAL ROOTS 0 / 0 (None)
705 RRSCHED  Round-Robin Scheduling 0 / 0 (None)
2099 RS2D  Happiness at the lowest cost 0 / 0 (None)
3630 RSHIFT  Right Shift 0 / 0 (None)
445 RSORTING  Ranklist Sorting 0 / 0 (None)

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