Problemset - Codeforces

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Codeforces Round (Div. 2)
3 days
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Problems

#	Name
1446A	Knapsack constructive algorithms, greedy, sortings	1300	x15495
1445B	Elimination greedy, math	900	x15274
1445A	Array Rearrangment greedy, sortings	800	x19110
1444E	Finding the Vertex brute force, dfs and similar, dp, interactive, trees	3500	x137
1444D	Rectangular Polyline constructive algorithms, dp, geometry	2900	x568
1444C	Team-Building data structures, dfs and similar, dsu, graphs	2500	x1599
1444B	Divide and Sum combinatorics, math, sortings	1900	x6302
1444A	Division brute force, math, number theory	1500	x13019
1443E	Long Permutation brute force, math, two pointers	2400	x1257
1443C	The Delivery Dilemma binary search, greedy, sortings	1400	x15263
1443B	Saving the City dp, greedy, math, sortings	1300	x15770
1443A	Kids Seating constructive algorithms, math	800	x16222
1442F	Differentiating Games games, interactive	3400	x131
1442E	Black, White and Grey Tree binary search, constructive algorithms, dfs and similar, dp, greedy, trees	3000	x592
1442D	Sum data structures, divide and conquer, dp, greedy	2800	x2224
1442C	Graph Transpositions dfs and similar, graphs, greedy, shortest paths	2400	x1687
1442B	Identify the Operations combinatorics, data structures, dsu, greedy, implementation	1800	x4485
1442A	Extreme Subtraction constructive algorithms, dp, greedy	1800	x8870
1440B	Sum of Medians greedy, math	900	x18857
1440A	Buy the String implementation, math	800	x19730
1439E	Cheat and Win bitmasks, data structures, games, trees	3500	x221
1439D	INOI Final Contests combinatorics, dp, fft	3100	x371
1439C	Greedy Shopping binary search, data structures, divide and conquer, greedy, implementation	2600	x1860
1439B	Graph Subset Problem constructive algorithms, data structures, graphs	2600	x1470
1439A2	Binary Table (Hard Version) constructive algorithms, graphs, greedy, implementation	1900	x5108
1439A1	Binary Table (Easy Version) constructive algorithms, implementation	1500	x9369
1438F	Olha and Igor interactive, probabilities, trees	3000	x635
1438E	Yurii Can Do Everything binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers	2500	x1342
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4186
1438C	Engineer Artem 2-sat, chinese remainder theorem, constructive algorithms, fft, flows	2000	x10476
1438B	Valerii Against Everyone constructive algorithms, data structures, greedy, sortings	1000	x19693
1438A	Specific Tastes of Andre constructive algorithms, implementation	800	x19248
1437G	Death DBMS data structures, string suffix structures, strings, trees	2600	x1001
1437F	Emotional Fishermen combinatorics, dp, math, two pointers	2600	x1271
1437E	Make It Increasing binary search, constructive algorithms, data structures, dp, implementation	2200	x3450
1437D	Minimal Height Tree graphs, greedy, shortest paths, trees	1600	x12741
1437C	Chef Monocarp dp, flows, graph matchings, greedy, math, sortings	1800	x10488
1437B	Reverse Binary Strings constructive algorithms, greedy	1200	x19185
1437A	Marketing Scheme brute force, constructive algorithms, greedy, math	800	x18011
1436F	Sum Over Subsets combinatorics, math, number theory	2800	x525
1436E	Complicated Computations binary search, data structures, two pointers	2400	x2264
1436D	Bandit in a City binary search, dfs and similar, graphs, greedy, trees	1900	x6057
1436C	Binary Search binary search, combinatorics	1500	x10800
1436B	Prime Square constructive algorithms, math	900	x20568
1436A	Reorder math	800	x22682
1434E	A Convex Game dsu, games	3500	x176
1433G	Reducing Delivery Cost brute force, graphs, shortest paths	2100	x4332
1433F	Zero Remainder Sum dp	2100	x6050
1433E	Two Round Dances combinatorics, math	1300	x18443
1433D	Districts Connection constructive algorithms, dfs and similar	1200	x23134
1433C	Dominant Piranha constructive algorithms, greedy	900	x26969
1433B	Yet Another Bookshelf greedy, implementation	800	x28383
1433A	Boring Apartments implementation, math	800	x52285
1431J	Zero-XOR Array *special problem, dp	3400	x44
1431I	Cyclic Shifts *special problem, strings	2900	x46
1431H	Rogue-like Game *special problem, brute force, greedy, two pointers	2600	x67
1431G	Number Deletion Game *special problem, dp, games, greedy	2100	x189
1431F	Neural Network Problem *special problem, binary search, greedy	2100	x156
1431E	Chess Match *special problem	2000	x221
1431D	Used Markers *special problem, greedy	1500	x456
1431C	Black Friday *special problem, implementation	1600	x705
1431B	Polycarp and the Language of Gods *special problem, implementation, two pointers	1400	x1012
1431A	Selling Hamburgers *special problem	800	x1865
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x711
1430F	Realistic Gameplay dp, greedy	2600	x912
1430E	String Reversal data structures, greedy, strings	1900	x6492
1430D	String Deletion binary search, data structures, greedy, two pointers	1700	x8798
1430C	Numbers on Whiteboard constructive algorithms, data structures, greedy, implementation, math	1000	x24459
1430B	Barrels greedy, implementation, sortings	800	x19373
1430A	Number of Apartments brute force, constructive algorithms, math	900	x20889
1428H	Rotary Laser Lock binary search, interactive	3500	x109
1428G2	Lucky Numbers (Hard Version) dp, greedy	3000	x632
1428G1	Lucky Numbers (Easy Version) dp, greedy	2900	x568
1428F	Fruit Sequences binary search, data structures, divide and conquer, dp, two pointers	2400	x2304
1428E	Carrots for Rabbits binary search, data structures, greedy, math, sortings	2200	x3653
1428D	Bouncing Boomerangs constructive algorithms, greedy, implementation	1900	x4484
1428C	ABBB brute force, data structures, greedy, strings	1100	x20213
1428B	Belted Rooms graphs, implementation	1200	x14377
1428A	Box is Pull math	800	x16318
1427H	Prison Break binary search, games, geometry, ternary search	3500	x77
1427G	One Billion Shades of Grey flows, graphs	3300	x345
1427F	Boring Card Game data structures, greedy, trees	3200	x313
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1410
1427D	Unshuffling a Deck constructive algorithms, implementation	2000	x3508
1427C	The Hard Work of Paparazzi dp	2000	x5666
1427B	Chess Cheater greedy, implementation, sortings	1400	x10903
1427A	Avoiding Zero math, sortings	900	x17222
1426F	Number of Subsequences combinatorics, dp, strings	2000	x5357
1426E	Rock, Paper, Scissors brute force, constructive algorithms, flows, greedy, math	1800	x7419
1426D	Non-zero Segments constructive algorithms, data structures, greedy, sortings	1500	x16000
1426C	Increase and Copy binary search, constructive algorithms, math	1100	x19381
1426B	Symmetric Matrix implementation	900	x20646
1426A	Floor Number implementation, math	800	x47910
1425I	Impressive Harvesting of The Orchard data structures	2800	x237
1425H	Huge Boxes of Animal Toys constructive algorithms	1300	x4165
1425F	Flamingoes of Mystery interactive	1400	x5729
1425E	Excitation of Atoms greedy, implementation	2200	x939
1425D	Danger of Mad Snakes combinatorics, dp, math	2300	x835
1425C	Captain of Knights math	3100	x41
1425B	Blue and Red of Our Faculty! divide and conquer, dp	2600	x282