Problemset - Codeforces

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Problems

#	Name
1972B	Coin Games games		x12790
1972A	Contest Proposal brute force, greedy, two pointers		x14561
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees		x141
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees		x263
1970G1	Min-Fund Prison (Easy) dfs and similar, trees		x512
1970F3	Playing Quidditch (Hard) implementation		x192
1970F2	Playing Quidditch (Medium) implementation		x200
1970F1	Playing Quidditch (Easy) implementation		x266
1970E3	Trails (Hard) dp, matrices		x295
1970E2	Trails (Medium) dp, matrices		x476
1970E1	Trails (Easy) dp		x641
1970D3	Arithmancy (Hard) interactive		x36
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings		x95
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings		x324
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees		x548
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees		x806
1970C1	Game on Tree (Easy) games		x1025
1970B3	Exact Neighbours (Hard) constructive algorithms		x251
1970B2	Exact Neighbours (Medium) constructive algorithms		x383
1970B1	Exact Neighbours (Easy) constructive algorithms		x519
1970A3	Balanced Unshuffle (Hard) constructive algorithms, trees		x262
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees		x274
1970A1	Balanced Shuffle (Easy) implementation, sortings		x1510
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x98
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x793
1969D	Shop Game data structures, greedy, math, sortings	1900	x2910
1969C	Minimizing the Sum dp, implementation	1700	x5388
1969B	Shifts and Sorting constructive algorithms, greedy	1000	x12930
1969A	Two Friends constructive algorithms, implementation, math	800	x14588
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings		x1144
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings		x2621
1968F	Equal XOR Segments binary search, data structures		x3135
1968E	Cells Arrangement constructive algorithms		x6579
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math		x9965
1968C	Assembly via Remainders constructive algorithms, number theory		x16874
1968B	Prefiquence greedy, two pointers		x20627
1968A	Maximize? brute force, math, number theory		x24102
1967F	Next and Prev brute force, data structures, implementation		x21
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math		x44
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math		x108
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers		x361
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees		x1126
1967B2	Reverse Card (Hard Version) brute force, math, number theory		x2696
1967B1	Reverse Card (Easy Version) brute force, math, number theory		x8655
1967A	Permutation Counting binary search, greedy, implementation, math, sortings		x8004
1966B	Rectangle Filling constructive algorithms, implementation	1100	x10595
1966A	Card Exchange constructive algorithms, games, greedy	800	x13595
1965F	Conference data structures, flows	3300	x62
1965E	Connected Cubes constructive algorithms, games	3100	x156
1965D	Missing Subarray Sum constructive algorithms	2900	x240
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1328
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x4649
1965A	Everything Nim games, greedy, math, sortings	1400	x9330
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x263
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x325
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x965
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3453
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x7281
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x14473
1957A	Stickogon constructive algorithms, greedy	800	x19371
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x248
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x639
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1180
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3099
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x10396
1956B	Nene and the Card Game games, greedy	800	x18508
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x18584
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x990
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3383
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5782
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7017
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x12630
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x17533
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x23510
1955A	Yogurt Sale math	800	x35974
1954F	Unique Strings combinatorics, dp, math	3100	x197
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1739
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4790
1954C	Long Multiplication greedy, math, number theory	1200	x15381
1954B	Make It Ugly implementation, math	1200	x15155
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x20081
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x688
1952I	Dark Matter bitmasks, geometry		x342
1952H	Palindrome implementation, strings		x348
1952G	Mathematician Takeover binary search, dfs and similar, math		x918
1952F	Grid brute force		x1634
1952E	Sweep Line combinatorics, games, math		x207
1952D	Are You a Procrastinator? implementation		x4129
1952C	They Have Fooled brute force, schedules		x2709
1952B	Is it stated? strings		x10264
1952A	Are You a Robot, Again? strings		x11334
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x42
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x194
1951G	Clacking Balls combinatorics, math, probabilities	3100	x247
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x646
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2975
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4635
1951C	Ticket Hoarding greedy, math, sortings	1400	x9481
1951B	Battle Cows binary search, data structures, greedy	1200	x11867
1951A	Dual Trigger constructive algorithms, greedy, math	900	x16252

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