	ID	题目显示标签隐藏标签	AC / 尝试	难度
	2217	RPLN Negative Score tree rmq-1	0 / 0	(无)
	744	RPS Finding the Top RPS Player	0 / 0	(无)
	1268	RPSSL Rock-Paper-Scissors-Lizard-Spock	0 / 0	(无)
	3600	RPSWAR RPS Warfare	0 / 0	(无)
	2065	RRANGE Ranges	0 / 0	(无)
	2867	RROOT REAL ROOTS math geometry	0 / 0	(无)
	705	RRSCHED Round-Robin Scheduling simulations	0 / 0	(无)
	2099	RS2D Happiness at the lowest cost	0 / 0	(无)
	3630	RSHIFT Right Shift adhoc	0 / 0	(无)
	446	RSORTING Ranklist Sorting	0 / 0	(无)
	849	RSTAURNT Restaurant Tab	0 / 0	(无)
	3028	RTREE Roger and tree dynamic-programming tree dfs	0 / 0	(无)
	3177	RTREE2 Valid Path tree	0 / 0	(无)
	3180	RTREE3 Roger and tree III tree	0 / 0	(无)
	2765	RUMMY Help Vishnu with his points	0 / 0	(无)
	33	RUNAWAY Run Away	0 / 0	(无)
	3778	RZSCSRVC Secret Service Agent	0 / 0	(无)
	774	SA04C Roman Patrollers	0 / 0	(无)
	775	SA04D Very Special Boxes	0 / 0	(无)
	3565	SABBIRGAME Sabbir and Game	0 / 0	(无)
	3121	SACITY Sadde and His City bit-3	0 / 0	(无)
	2460	SAFECRAC Crack the Safe dynamic-programming dfs	0 / 0	(无)
	2549	SALES Sales	0 / 0	(无)
	2837	SALMAN Salary Management tree dfs	0 / 0	(无)
	1732	SALTOS A los saltos	0 / 0	(无)
	306	SAM Toy Cars	0 / 0	(无)
	3739	SAMBOX Samvel and Boxes datastructures	0 / 0	(无)
	806	SAMER08A Almost Shortest Path graph-theory shortest-path dijkstra-s-algorithm	0 / 0	(无)
	807	SAMER08B Bases	0 / 0	(无)
	808	SAMER08C Candy dynamic-programming	0 / 0	(无)
	809	SAMER08D DNA Sequences dynamic-programming	0 / 0	(无)
	810	SAMER08E Electricity	0 / 0	(无)
	811	SAMER08F Feynman	0 / 0	(无)
	812	SAMER08G Pole Position	0 / 0	(无)
	814	SAMER08H Higgs Boson	0 / 0	(无)
	813	SAMER08I Traveling Shoemaker Problem	0 / 0	(无)
	815	SAMER08J Bora Bora	0 / 0	(无)
	816	SAMER08K Shrinking Polygons bubble-cup-6-round-1	0 / 0	(无)
	1269	SAMTWARR Two Array Problem	0 / 0	(无)
	2572	SANTA1 Reindeer Games	0 / 0	(无)
	2573	SANTA2 Travelling Santa bubble-cup-9-round-2	0 / 0	(无)
	2574	SANTA3 Breaking and Entering	0 / 0	(无)
	3641	SANVI Sanvi and Magical Numbers	0 / 0	(无)
	3635	SAS001 Apoorv and Maximum Inversion datastructures	0 / 0	(无)
	3636	SAS002 Apoorv and Math problem math-number-theory	0 / 0	(无)
	3759	SAS003 Apoorv Loves Primes binary-search	0 / 0	(无)
	2846	SAWMILL Two Swamills	0 / 0	(无)
	1444	SBACT Slow Growing Bacteria	0 / 0	(无)
	26	SBANK Sorting Bank Accounts sorting ad-hoc-1	0 / 0	(无)
	1327	SBETS Soccer Bets	0 / 0	(无)
	2609	SBO MAXIMUM RARITY tree	0 / 0	(无)
	3	SBSTR1 Substring Check (Bug Funny)	0 / 0	(无)
	2477	SBW Super Borboletas World	0 / 0	(无)
	676	SC1 Starcraft I	0 / 0	(无)
	487	SCALE Funny scales brute-force binary-search	0 / 0	(无)
	126	SCALES Balancing the Stone	0 / 0	(无)
	285	SCANNER Scanner	0 / 0	(无)
	791	SCAVHUNT Scavenger Hunt	0 / 0	(无)
	2048	SCCCER Soccer Ceremony	0 / 0	(无)
	3389	SCELL SUPER CELL	0 / 0	(无)
	2516	SCIENCE Science	0 / 0	(无)
	192	SCITIES Selfish Cities combinatorics weighted-matching	0 / 0	(无)
	1865	SCPC11A Grey Area	0 / 0	(无)
	1866	SCPC11B Alaska	0 / 0	(无)
	1868	SCPC11F GO	0 / 0	(无)
	1867	SCPC11G Indomie	0 / 0	(无)
	1869	SCPC11H Dolls	0 / 0	(无)
	45	SCRAPER Skyscraper Floors	0 / 0	(无)
	1594	SCROLL Spreadsheet scrolling	0 / 0	(无)
	137	SCUBADIV Scuba diver dynamic-programming	0 / 0	(无)
	43	SCYPHER Substitution Cipher	0 / 0	(无)
	708	SDGAME Super Dice Game	0 / 0	(无)
	715	SDGAME2 Another understanding of Super Dice Game bubble-cup-7-round-1	0 / 0	(无)
	3773	SE7EN Seven dfs	0 / 0	(无)
	2053	SEAGOD Searching God	0 / 0	(无)
	2000	SECSYS Security System	0 / 0	(无)
	2699	SECTORS Equalize the Sectors	0 / 0	(无)
	3201	SEGFAULT Segfault	0 / 0	(无)
	644	SEGMENTS Segments	0 / 0	(无)
	2226	SEGSQRSS Sum of Squares with Segment Tree tree	0 / 0	(无)
	1287	SEGTREE Segment Tree bubble-cup-7-round-1	0 / 0	(无)
	100	SEGVIS Horizontally Visible Segments	0 / 0	(无)
	3721	SELECTION Bucket Selection sorting datastructures	0 / 0	(无)
	2530	SELFDESN Self Descriptive Number	0 / 0	(无)
	3883	SELFNUM Fashionable self-describing numbers	0 / 0	(无)
	2650	SELLINGA Selling Art	0 / 0	(无)
	3157	SELLPHN2 Mobile Company 2 max-flow	0 / 0	(无)
	1227	SELTEAM Selecting Teams	0 / 0	(无)
	1936	SENSORNT Sensor Network	0 / 0	(无)
	215	SEQ Recursive Sequence recursion	0 / 0	(无)
	415	SEQ1 01 Sequence	0 / 0	(无)
	431	SEQ2 Another Sequence Problem	0 / 0	(无)
	749	SEQ5 How many subsequences ad-hoc-1	0 / 0	(无)
	1290	SEQ6 Consecutive sequence math	0 / 0	(无)
	1703	SEQ7 Yet Another Sequence Problem	0 / 0	(无)
	2219	SEQAGAIN Easy Sequence!	0 / 0	(无)
	1311	SEQFUN Sequence Function	0 / 0	(无)
	1561	SEQN Sequence	0 / 0	(无)
	304	SEQPAR Partition the sequence	0 / 0	(无)
	505	SEQPAR2 Sequence Partitioning II	0 / 0	(无)

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根据当前过滤条件随机选择一道题