	ID	题目显示标签隐藏标签	AC / 尝试	难度
	205	RATTERN The Room Pattern	0 / 0	(无)
	3854	RCB Richest_Beggar datastructures	0 / 0	(无)
	2597	RDINNER A Romantic Dinner Outing	0 / 0	(无)
	1910	RDNWK Road Network	0 / 0	(无)
	3942	RDR21 Escape the New America graph-theory bfs	0 / 0	(无)
	2470	RDRUG Rage Drug	0 / 0	(无)
	2019	RE1 Reverse Engineering	0 / 0	(无)
	2751	REALNO Real Numbers	0 / 0	(无)
	3791	REAYZCODETST Coding Test	0 / 0	(无)
	2204	REBOUND The return of the Cake	0 / 0	(无)
	1174	REC Recurrence math big-numbers	0 / 0	(无)
	3911	RECPWSUM Recurrence Power Sum combinatorics generating-function matrixexpo binets-formula	0 / 0	(无)
	558	RECTANGL Rectangles	0 / 0	(无)
	3856	RECTANGLE Honest Rectangle	0 / 0	(无)
	1587	RECTMAT Rectangles in a Matrix	0 / 0	(无)
	143	RECTNG1 Rectangles	0 / 0	(无)
	638	RECTNG2 Partitions	0 / 0	(无)
	3851	REDARR2 Reduce the array	0 / 0	(无)
	2210	REDCROSS Red Cross Hospital	0 / 0	(无)
	3454	REDRONESIA Counting Words	0 / 0	(无)
	3505	REDSUBLIA Single substitutions	0 / 0	(无)
	1950	REGPOLYG Regular Convex Polygon	0 / 0	(无)
	66	RELATS1 Relations	0 / 0	(无)
	482	RELINETS Reliable Nets brute-force disjoint-set-2	0 / 0	(无)
	885	RELJEF Reljef	0 / 0	(无)
	579	REMGAME Stone Removing Game shortest-path recursion	0 / 0	(无)
	1881	REMOVE Help the Airline Company	0 / 0	(无)
	109	RENT Rent your airplane and make money sorting dynamic-programming binary-search	0 / 0	(无)
	1052	REPAIR1 Repair the Door math probability-theory dynamic-programming	0 / 0	(无)
	305	REPEATS Repeats	0 / 0	(无)
	653	RESIST Kirchhof Law	0 / 0	(无)
	2010	RESOURCE Resource Management	0 / 0	(无)
	2129	RESTACK Restacking haybales 2012	0 / 0	(无)
	1920	RESTAURN Working at the Restaurant	0 / 0	(无)
	2534	RETDIG Return of the Digger	0 / 0	(无)
	3200	RETRO Retrovirus	0 / 0	(无)
	3035	REVADD Special Numbers (Reverse and Add) adhoc bubble-cup-9-round-2	0 / 0	(无)
	1852	REVFIB Revenge of Fibonacci	0 / 0	(无)
	1949	REVIEW Peer Review	0 / 0	(无)
	1658	REVSEQ Reverse the Sequence	0 / 0	(无)
	3852	RGBRED Color Play	0 / 0	(无)
	103	RHOMBS Rhombs	0 / 0	(无)
	958	RIGHTTRI Right Triangle Counting binary-search	0 / 0	(无)
	2335	RIOI23 Path of the righteous man bfs	0 / 0	(无)
	2368	RIOI32 Counting	0 / 0	(无)
	3122	RIVALS Rivals	0 / 0	(无)
	3909	RKRCTAN The Attack Titan math number-theory	0 / 0	(无)
	2877	RKS RK Sorting ad-hoc-1	0 / 0	(无)
	2852	RLCAT Robert Langdon & Class Attendance	0 / 0	(无)
	2854	RLCIPHER Robert Langdon & Cipher	0 / 0	(无)
	2822	RLE Run length encoding	0 / 0	(无)
	1123	RLM Run-Length Mathematics	0 / 0	(无)
	2860	RLTHREE Robert Langdon & The Rule of Three combinatorics	0 / 0	(无)
	2855	RLTOUR Robert Langdon & Florence ad-hoc-1	0 / 0	(无)
	2632	RMID Running Median tree binary-search	0 / 0	(无)
	2750	RMID2 Running Median Again tree heap binary-search priority-queue	0 / 0	(无)
	2598	RMOVIE A Romantic Movie Outing	0 / 0	(无)
	1952	RMTLAND Remoteland	0 / 0	(无)
	1348	RNDORDER The Least Number	0 / 0	(无)
	567	RNG Random Number Generator	0 / 0	(无)
	268	RNUMBER Random Number	0 / 0	(无)
	134	ROADNET Road net graph ad-hoc-1	0 / 0	(无)
	214	ROADS Roads	0 / 0	(无)
	1603	ROADTRIP Road trip	0 / 0	(无)
	1258	ROBBERY2 Robbery 2 math ad-hoc-1	0 / 0	(无)
	824	ROBIN Robintron	0 / 0	(无)
	427	ROBOT Robot Number M	0 / 0	(无)
	1843	ROBOTGRI Robots on a grid	0 / 0	(无)
	3930	ROBOWORLD Robot World math-number-theory	0 / 0	(无)
	128	ROCK Sweet and Sour Rock dynamic-programming	0 / 0	(无)
	148	ROCKETS Rockets	0 / 0	(无)
	2626	ROHAAN Defend The Rohan	0 / 0	(无)
	2211	ROIM Boa viagem, Roim bubble-cup-8-round-2	0 / 0	(无)
	573	ROLLBALL The Rolling Ball	0 / 0	(无)
	170	ROMAN Converting number formats	0 / 0	(无)
	2256	ROMAN008 ROMAN NUMERALS	0 / 0	(无)
	559	ROMANRDS Roman Roads	0 / 0	(无)
	3246	ROOBOT Robot bubble-cup-9-round-1	0 / 0	(无)
	1402	ROOKS Chess part1	0 / 0	(无)
	607	ROOT Root of a Linear Equation	0 / 0	(无)
	1263	ROOTCIPH Decipher ad-hoc-1	0 / 0	(无)
	2240	ROT Rescue On Time	0 / 0	(无)
	2280	ROULETTD Natalia Spins The Roulette	0 / 0	(无)
	789	ROUNDT Round Table	0 / 0	(无)
	1926	ROUTING Routing	0 / 0	(无)
	490	RP Life, the Universe, and Everything II	0 / 0	(无)
	1337	RPAR Raining Parabolas	0 / 0	(无)
	259	RPGAMES Roll Playing Games	0 / 0	(无)
	2151	RPLA Answer the boss!	0 / 0	(无)
	2152	RPLB Blueberries dynamic-programming	0 / 0	(无)
	2153	RPLC Coke madness ad-hoc-1	0 / 0	(无)
	2154	RPLD Database ad-hoc-1	0 / 0	(无)
	2155	RPLE Espionage	0 / 0	(无)
	2181	RPLG Goto & labels	0 / 0	(无)
	2183	RPLH Hard Launching	0 / 0	(无)
	2182	RPLI Ignore the bounds	0 / 0	(无)
	2185	RPLJ Just the distance	0 / 0	(无)
	2215	RPLK Kind and gently	0 / 0	(无)
	2216	RPLL Lifesavers	0 / 0	(无)
	2218	RPLM Mountain Cave	0 / 0	(无)

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