Problemset - Codeforces

Problems

#	Name
1549B	Gregor and the Pawn Game dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation	800	x24576
1549A	Gregor and Cryptography math, number theory	800	x32750
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x463
1548D2	Gregor and the Odd Cows (Hard) brute force, geometry, math, number theory	3300	x265
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1478
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1844
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9991
1548A	Web of Lies brute force, graphs, greedy	1400	x16533
1547G	How Many Paths? dfs and similar, dp, graphs, trees	2100	x3029
1547F	Array Stabilization (GCD version) binary search, brute force, data structures, divide and conquer, number theory, two pointers	1900	x5919
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x14583
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16819
1547C	Pair Programming greedy, two pointers	1100	x22813
1547B	Alphabetical Strings greedy, implementation, strings	800	x26512
1547A	Shortest Path with Obstacle implementation, math	800	x30597
1546B	AquaMoon and Stolen String interactive, math	1200	x13204
1546A	AquaMoon and Two Arrays brute force, greedy	800	x18247
1545F	AquaMoon and Potatoes brute force, data structures, dp	3500	x110
1545E2	AquaMoon and Time Stop (hard version) data structures, dp	3500	x88
1545E1	AquaMoon and Time Stop (easy version) data structures, dp	3500	x84
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x499
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x641
1545B	AquaMoon and Chess combinatorics, math	1900	x6008
1545A	AquaMoon and Strange Sort sortings	1500	x13996
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x414
1543D2	RPD and Rap Sheet (Hard Version) brute force, constructive algorithms, interactive, math	2200	x2025
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7645
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5317
1543B	Customising the Track combinatorics, greedy, math	900	x23244
1543A	Exciting Bets greedy, math, number theory	900	x28747
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x866
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1257
1542D	Priority Queue combinatorics, dp, implementation, math, ternary search	2200	x2666
1542C	Strange Function math, number theory	1600	x14347
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x23373
1542A	Odd Set math	800	x45270
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x29010
1541A	Pretty Permutations constructive algorithms, greedy, implementation	800	x29518
1540E	Tasty Dishes math, matrices	3500	x107
1540D	Inverse Inversions binary search, brute force, data structures	3200	x282
1540C2	Converging Array (Hard Version) dp, math	2900	x474
1540C1	Converging Array (Easy Version) dp, math	2700	x641
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x2659
1540A	Great Graphs constructive algorithms, graphs, greedy, shortest paths, sortings	1400	x14015
1539F	Strange Array data structures, greedy, sortings	2600	x883
1539E	Game with Cards binary search, constructive algorithms, data structures, dp, greedy, implementation	2500	x960
1539D	PriceFixed binary search, greedy, implementation, sortings, two pointers	1600	x11730
1539C	Stable Groups greedy, sortings	1200	x23287
1539B	Love Song dp, implementation, strings	800	x24687
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x20228
1538G	Gift Set binary search, greedy, math, ternary search	2100	x4590
1538F	Interesting Function binary search, dp, math, number theory	1500	x19460
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2914
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13735
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x28967
1538B	Friends and Candies greedy, math	800	x31791
1538A	Stone Game brute force, dp, greedy	800	x37153
1537F	Figure Fixing constructive algorithms, dfs and similar, dsu, graphs, greedy, math	2200	x2495
1537E2	Erase and Extend (Hard Version) binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers	2200	x5256
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x13154
1537D	Deleting Divisors games, math, number theory	1700	x12512
1537C	Challenging Cliffs constructive algorithms, greedy, implementation, math	1200	x27896
1537B	Bad Boy constructive algorithms, greedy, math	900	x30477
1537A	Arithmetic Array greedy, math	800	x37556
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x964
1536E	Omkar and Forest combinatorics, graphs, math, shortest paths	2300	x2449
1536D	Omkar and Medians data structures, greedy, implementation	2000	x4720
1536C	Diluc and Kaeya data structures, dp, hashing, number theory	1500	x14315
1536B	Prinzessin der Verurteilung brute force, constructive algorithms, strings	1200	x19030
1536A	Omkar and Bad Story brute force, constructive algorithms	800	x20237
1535F	String Distance binary search, brute force, data structures, hashing, implementation, strings	3000	x455
1535E	Gold Transfer binary search, data structures, dp, greedy, interactive, trees	2200	x2784
1535D	Playoff Tournament data structures, dfs and similar, dp, implementation, trees	1800	x7804
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16601
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x30783
1535A	Fair Playoff brute force, implementation	800	x50244
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x151
1534G	A New Beginning data structures, dp, geometry, sortings	3300	x576
1534F2	Falling Sand (Hard Version) dfs and similar, dp, graphs, greedy	3000	x565
1534F1	Falling Sand (Easy Version) dfs and similar, graphs, greedy	2500	x1255
1534E	Lost Array graphs, greedy, interactive, shortest paths	2300	x1958
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x6106
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12881
1534B	Histogram Ugliness greedy, implementation, math	1100	x12530
1534A	Colour the Flag brute force, implementation	800	x12775
1530H	Turing's Award data structures, dp	3400	x161
1530G	What a Reversal constructive algorithms	3300	x144
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x831
1530E	Minimax constructive algorithms, greedy, strings	2100	x2990
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x9287
1530C	Pursuit binary search, brute force, greedy, sortings	1200	x14715
1530B	Putting Plates constructive algorithms, implementation	800	x15811
1530A	Binary Decimal greedy, math	800	x21135
1529B	Sifid and Strange Subsequences greedy, math, sortings	1100	x20620
1529A	Eshag Loves Big Arrays constructive algorithms, greedy, math	800	x29854
1528F	AmShZ Farm combinatorics, fft, math	3300	x289
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x534
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms, graphs, shortest paths	2500	x1448
1528C	Trees of Tranquillity data structures, dfs and similar, greedy, trees	2300	x2663
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8768