Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
2 days
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two pointers

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Problems

#	Name
702C	Cellular Network binary search, implementation, two pointers	1500	x13310
701C	They Are Everywhere binary search, strings, two pointers	1500	x13943
696F	...Dary! binary search, geometry, two pointers	3300	x120
682E	Alyona and Triangles geometry, two pointers	2600	x648
676C	Vasya and String binary search, dp, strings, two pointers	1500	x18233
665F	Four Divisors data structures, dp, math, number theory, sortings, two pointers	2400	x579
660C	Hard Process binary search, dp, two pointers	1600	x9126
652C	Foe Pairs combinatorics, sortings, two pointers	1800	x3110
650B	Image Preview binary search, brute force, dp, two pointers	1900	x3310
645C	Enduring Exodus binary search, two pointers	1600	x3166
644B	Processing Queries *special problem, constructive algorithms, data structures, two pointers	1700	x2614
639D	Bear and Contribution data structures, greedy, sortings, two pointers	2400	x780
633E	Startup Funding binary search, constructive algorithms, data structures, probabilities, two pointers	2400	x572
627E	Orchestra two pointers	3000	x535
620D	Professor GukiZ and Two Arrays binary search, two pointers	2200	x1649
618F	Double Knapsack constructive algorithms, two pointers	3000	x1311
616D	Longest k-Good Segment binary search, data structures, two pointers	1600	x8848
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2174
611G	New Year and Cake geometry, two pointers	2900	x426
610D	Vika and Segments constructive algorithms, data structures, geometry, two pointers	2300	x1450
609D	Gadgets for dollars and pounds binary search, greedy, two pointers	2000	x2616
602B	Approximating a Constant Range dp, implementation, two pointers	1400	x10469
600B	Queries about less or equal elements binary search, data structures, sortings, two pointers	1300	x27767
594C	Edo and Magnets brute force, greedy, implementation, two pointers	2300	x674
592E	BCPC binary search, geometry, two pointers	2700	x209
581F	Zublicanes and Mumocrates dp, trees, two pointers	2400	x852
580B	Kefa and Company binary search, sortings, two pointers	1500	x25095
577B	Modulo Sum combinatorics, data structures, dp, two pointers	1900	x11570
533E	Correcting Mistakes constructive algorithms, dp, greedy, hashing, strings, two pointers	1800	x2226
524D	Social Network greedy, two pointers	2100	x946
519D	A and B and Interesting Substrings data structures, dp, two pointers	1800	x6286
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1230
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x4146
505C	Mr. Kitayuta, the Treasure Hunter dfs and similar, dp, two pointers	1900	x6108
498B	Name That Tune dp, probabilities, two pointers	2400	x1150
493C	Vasya and Basketball binary search, brute force, data structures, implementation, sortings, two pointers	1600	x6690
489B	BerSU Ball dfs and similar, dp, graph matchings, greedy, sortings, two pointers	1200	x46883
487B	Strip binary search, data structures, dp, two pointers	2000	x3370
484B	Maximum Value binary search, math, sortings, two pointers	2100	x6805
466C	Number of Ways binary search, brute force, data structures, dp, two pointers	1700	x34778
446A	DZY Loves Sequences dp, implementation, two pointers	1600	x12278
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x756
439D	Devu and his Brother binary search, sortings, ternary search, two pointers	1700	x5839
432D	Prefixes and Suffixes dp, string suffix structures, strings, two pointers	2000	x8374
430B	Balls Game brute force, two pointers	1400	x3636
427C	Checkposts dfs and similar, graphs, two pointers	1700	x13066
420C	Bug in Code data structures, graphs, implementation, two pointers	1900	x1222
416A	Guess a number! greedy, implementation, two pointers	1400	x8683
414D	Mashmokh and Water Tanks binary search, data structures, greedy, trees, two pointers	2300	x675
406E	Hamming Triples implementation, math, two pointers	2800	x229
391A	Genetic Engineering implementation, two pointers		x1703
387B	George and Round brute force, greedy, two pointers	1200	x11942
386C	Diverse Substrings dp, strings, two pointers	2000	x748
384B	Multitasking greedy, implementation, sortings, two pointers	1500	x3493
383B	Volcanoes binary search, implementation, sortings, two pointers	2500	x656
381A	Sereja and Dima greedy, implementation, two pointers	800	x61056
372D	Choosing Subtree is Fun binary search, data structures, dfs and similar, trees, two pointers	2600	x915
372A	Counting Kangaroos is Fun binary search, greedy, sortings, two pointers	1600	x12430
371E	Subway Innovation greedy, math, two pointers	2000	x1211
366D	Dima and Trap Graph binary search, data structures, dfs and similar, dsu, shortest paths, two pointers	2000	x1271
364E	Empty Rectangles divide and conquer, two pointers	3000	x536
359D	Pair of Numbers binary search, brute force, data structures, math, two pointers	2000	x4870
343C	Read Time binary search, greedy, two pointers	1900	x2909
318B	Strings of Power implementation, strings, two pointers	1300	x7395
314D	Sereja and Straight Lines binary search, data structures, geometry, sortings, two pointers	2500	x517
309B	Context Advertising dp, two pointers	2100	x500
309A	Morning run binary search, math, two pointers	2000	x460
302B	Eugeny and Play List binary search, implementation, two pointers	1200	x7834
293D	Ksusha and Square geometry, math, probabilities, two pointers	2700	x235
281B	Nearest Fraction brute force, implementation, two pointers	1700	x2938
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x4386
279C	Ladder dp, implementation, two pointers	1700	x8090
279B	Books binary search, brute force, implementation, two pointers	1400	x48453
264D	Colorful Stones dp, two pointers	2500	x408
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x10626
261E	Maxim and Calculator brute force, dp, two pointers	2800	x406
253D	Table with Letters - 2 brute force, two pointers	2000	x811
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10357
251A	Points on Line binary search, combinatorics, two pointers	1300	x16843
250D	Building Bridge geometry, ternary search, two pointers	1900	x876
243D	Cubes data structures, dp, geometry, two pointers	2700	x210
237C	Primes on Interval binary search, number theory, two pointers	1600	x5594
231C	To Add or Not to Add binary search, sortings, two pointers	1600	x8345
229D	Towers dp, greedy, two pointers	2100	x2123
229A	Shifts brute force, two pointers	1500	x3452
224B	Array bitmasks, implementation, two pointers	1500	x7178
222D	Olympiad binary search, greedy, sortings, two pointers	1900	x2128
220E	Little Elephant and Inversions data structures, two pointers	2400	x1340
216D	Spider's Web binary search, sortings, two pointers	1700	x1331
204E	Little Elephant and Strings data structures, implementation, string suffix structures, two pointers	2800	x1100
203E	Transportation greedy, sortings, two pointers	2300	x277
190D	Non-Secret Cypher two pointers	1900	x2243
180E	Cubes binary search, dp, two pointers	1800	x1735
175C	Geometry Horse greedy, implementation, sortings, two pointers	1600	x1291
166D	Shoe Store dp, graph matchings, greedy, sortings, two pointers	2500	x347
165C	Another Problem on Strings binary search, brute force, dp, math, strings, two pointers	1600	x11924
164B	Ancient Berland Hieroglyphs two pointers	2000	x451
163C	Conveyor sortings, two pointers	2100	x538
161A	Dress'em in Vests! binary search, brute force, greedy, two pointers	1300	x4694
138E	Hellish Constraints brute force, dp, two pointers	2900	x168