Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
03:11:26
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Before contest
Codeforces Round 941 (Div. 2)
03:11:26
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two pointers

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Problems

#	Name
652C	Foe Pairs combinatorics, sortings, two pointers	1800	x3069
650B	Image Preview binary search, brute force, dp, two pointers	1900	x3307
645C	Enduring Exodus binary search, two pointers	1600	x3150
644B	Processing Queries *special problem, constructive algorithms, data structures, two pointers	1700	x2601
639D	Bear and Contribution data structures, greedy, sortings, two pointers	2400	x779
633E	Startup Funding binary search, constructive algorithms, data structures, probabilities, two pointers	2400	x567
627E	Orchestra two pointers	3000	x531
620D	Professor GukiZ and Two Arrays binary search, two pointers	2200	x1629
618F	Double Knapsack constructive algorithms, two pointers	3000	x1301
616D	Longest k-Good Segment binary search, data structures, two pointers	1600	x8725
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2171
611G	New Year and Cake geometry, two pointers	2900	x422
610D	Vika and Segments constructive algorithms, data structures, geometry, two pointers	2300	x1434
609D	Gadgets for dollars and pounds binary search, greedy, two pointers	2000	x2550
602B	Approximating a Constant Range dp, implementation, two pointers	1400	x10396
600B	Queries about less or equal elements binary search, data structures, sortings, two pointers	1300	x27300
594C	Edo and Magnets brute force, greedy, implementation, two pointers	2300	x673
592E	BCPC binary search, geometry, two pointers	2700	x208
581F	Zublicanes and Mumocrates dp, trees, two pointers	2400	x844
580B	Kefa and Company binary search, sortings, two pointers	1500	x24840
577B	Modulo Sum combinatorics, data structures, dp, two pointers	1900	x11435
533E	Correcting Mistakes constructive algorithms, dp, greedy, hashing, strings, two pointers	1800	x2169
524D	Social Network greedy, two pointers	2100	x939
519D	A and B and Interesting Substrings data structures, dp, two pointers	1800	x6268
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1222
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x4105
505C	Mr. Kitayuta, the Treasure Hunter dfs and similar, dp, two pointers	1900	x6064
498B	Name That Tune dp, probabilities, two pointers	2400	x1147
493C	Vasya and Basketball binary search, brute force, data structures, implementation, sortings, two pointers	1600	x6666
489B	BerSU Ball dfs and similar, dp, graph matchings, greedy, sortings, two pointers	1200	x46352
487B	Strip binary search, data structures, dp, two pointers	2000	x3345
484B	Maximum Value binary search, math, sortings, two pointers	2100	x6768
466C	Number of Ways binary search, brute force, data structures, dp, two pointers	1700	x34488
446A	DZY Loves Sequences dp, implementation, two pointers	1600	x12228
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x748
439D	Devu and his Brother binary search, sortings, ternary search, two pointers	1700	x5781
432D	Prefixes and Suffixes dp, string suffix structures, strings, two pointers	2000	x8162
430B	Balls Game brute force, two pointers	1400	x3623
427C	Checkposts dfs and similar, graphs, two pointers	1700	x12909
420C	Bug in Code data structures, graphs, implementation, two pointers	1900	x1192
416A	Guess a number! greedy, implementation, two pointers	1400	x8634
414D	Mashmokh and Water Tanks binary search, data structures, greedy, trees, two pointers	2300	x673
406E	Hamming Triples implementation, math, two pointers	2800	x227
391A	Genetic Engineering implementation, two pointers		x1699
387B	George and Round brute force, greedy, two pointers	1200	x11904
386C	Diverse Substrings dp, strings, two pointers	2000	x710
384B	Multitasking greedy, implementation, sortings, two pointers	1500	x3478
383B	Volcanoes binary search, implementation, sortings, two pointers	2500	x652
381A	Sereja and Dima greedy, implementation, two pointers	800	x59984
372D	Choosing Subtree is Fun binary search, data structures, dfs and similar, trees, two pointers	2600	x906
372A	Counting Kangaroos is Fun binary search, greedy, sortings, two pointers	1600	x12316
371E	Subway Innovation greedy, math, two pointers	2000	x1203
366D	Dima and Trap Graph binary search, data structures, dfs and similar, dsu, shortest paths, two pointers	2000	x1270
364E	Empty Rectangles divide and conquer, two pointers	3000	x533
359D	Pair of Numbers binary search, brute force, data structures, math, two pointers	2000	x4812
343C	Read Time binary search, greedy, two pointers	1900	x2896
318B	Strings of Power implementation, strings, two pointers	1300	x7365
314D	Sereja and Straight Lines binary search, data structures, geometry, sortings, two pointers	2500	x514
309B	Context Advertising dp, two pointers	2100	x498
309A	Morning run binary search, math, two pointers	2000	x458
302B	Eugeny and Play List binary search, implementation, two pointers	1200	x7771
293D	Ksusha and Square geometry, math, probabilities, two pointers	2700	x233
281B	Nearest Fraction brute force, implementation, two pointers	1700	x2920
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x4357
279C	Ladder dp, implementation, two pointers	1700	x8040
279B	Books binary search, brute force, implementation, two pointers	1400	x47520
264D	Colorful Stones dp, two pointers	2500	x406
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x10584
261E	Maxim and Calculator brute force, dp, two pointers	2800	x403
253D	Table with Letters - 2 brute force, two pointers	2000	x805
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10297
251A	Points on Line binary search, combinatorics, two pointers	1300	x16546
250D	Building Bridge geometry, ternary search, two pointers	1900	x873
243D	Cubes data structures, dp, geometry, two pointers	2700	x208
237C	Primes on Interval binary search, number theory, two pointers	1600	x5542
231C	To Add or Not to Add binary search, sortings, two pointers	1600	x8281
229D	Towers dp, greedy, two pointers	2100	x2099
229A	Shifts brute force, two pointers	1500	x3435
224B	Array bitmasks, implementation, two pointers	1500	x7145
222D	Olympiad binary search, greedy, sortings, two pointers	1900	x2127
220E	Little Elephant and Inversions data structures, two pointers	2400	x1327
216D	Spider's Web binary search, sortings, two pointers	1700	x1319
204E	Little Elephant and Strings data structures, implementation, string suffix structures, two pointers	2800	x1077
203E	Transportation greedy, sortings, two pointers	2300	x276
190D	Non-Secret Cypher two pointers	1900	x2228
180E	Cubes binary search, dp, two pointers	1800	x1719
175C	Geometry Horse greedy, implementation, sortings, two pointers	1600	x1288
166D	Shoe Store dp, graph matchings, greedy, sortings, two pointers	2500	x344
165C	Another Problem on Strings binary search, brute force, dp, math, strings, two pointers	1600	x11853
164B	Ancient Berland Hieroglyphs two pointers	2000	x450
163C	Conveyor sortings, two pointers	2100	x536
161A	Dress'em in Vests! binary search, brute force, greedy, two pointers	1300	x4673
138E	Hellish Constraints brute force, dp, two pointers	2900	x164
131F	Present to Mom binary search, two pointers	2000	x599
121D	Lucky Segments binary search, implementation, two pointers	2500	x270
86D	Powerful array data structures, implementation, math, two pointers	2200	x12487
79C	Beaver data structures, dp, greedy, hashing, strings, two pointers	1800	x1714
78D	Archer's Shot binary search, geometry, math, two pointers	2300	x301
76B	Mice greedy, two pointers	2100	x494
70C	Lucky Tickets binary search, data structures, sortings, two pointers	2200	x561