Problemset - Codeforces

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Problems

#	Name
1972B	Coin Games games	900	x14190
1972A	Contest Proposal brute force, greedy, two pointers	800	x15922
1971H	±1 2-sat, dfs and similar, graphs		x629
1971G	XOUR data structures, dsu, sortings		x4160
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math		x4500
1971E	Find the Car binary search, math, sortings		x6594
1971D	Binary Cut greedy, implementation, sortings, strings		x15548
1971C	Clock and Strings implementation		x20174
1971B	Different String implementation, strings		x23459
1971A	My First Sorting Problem implementation, sortings		x28549
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x153
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees	2200	x284
1970G1	Min-Fund Prison (Easy) dfs and similar, trees	1900	x579
1970F3	Playing Quidditch (Hard) implementation	2300	x204
1970F2	Playing Quidditch (Medium) implementation	2300	x211
1970F1	Playing Quidditch (Easy) implementation	2300	x282
1970E3	Trails (Hard) dp, matrices	2200	x326
1970E2	Trails (Medium) dp, matrices	2000	x526
1970E1	Trails (Easy) dp	1800	x733
1970D3	Arithmancy (Hard) interactive	3100	x41
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x100
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x347
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x618
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x930
1970C1	Game on Tree (Easy) games	1400	x1188
1970B3	Exact Neighbours (Hard) constructive algorithms	2300	x266
1970B2	Exact Neighbours (Medium) constructive algorithms	2100	x410
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	x569
1970A3	Balanced Unshuffle (Hard) constructive algorithms, trees	2400	x291
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees	2400	x300
1970A1	Balanced Shuffle (Easy) implementation, sortings	1000	x1723
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x103
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x870
1969D	Shop Game data structures, greedy, math, sortings	1900	x3119
1969C	Minimizing the Sum dp, implementation	1700	x5754
1969B	Shifts and Sorting constructive algorithms, greedy	1000	x13585
1969A	Two Friends constructive algorithms, implementation, math	800	x15203
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1281
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x2909
1968F	Equal XOR Segments binary search, data structures	1800	x3565
1968E	Cells Arrangement constructive algorithms	1600	x7200
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x10820
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x18140
1968B	Prefiquence greedy, two pointers	800	x21870
1968A	Maximize? brute force, math, number theory	800	x25652
1967F	Next and Prev brute force, data structures, implementation	3200	x26
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x50
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x115
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x402
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1197
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x2866
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x9239
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x8568
1966B	Rectangle Filling constructive algorithms, implementation	1100	x11040
1966A	Card Exchange constructive algorithms, games, greedy	800	x14023
1965F	Conference data structures, flows	3300	x71
1965E	Connected Cubes constructive algorithms, games	3100	x169
1965D	Missing Subarray Sum constructive algorithms	2900	x252
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1373
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x4830
1965A	Everything Nim games, greedy, math, sortings	1400	x9771
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x278
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x339
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x985
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3554
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x7469
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x14747
1957A	Stickogon constructive algorithms, greedy	800	x19695
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x258
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x656
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1201
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3180
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x10566
1956B	Nene and the Card Game games, greedy	800	x18714
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x18831
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1008
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3432
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5854
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7115
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x12761
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x17711
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x23712
1955A	Yogurt Sale math	800	x36364
1954F	Unique Strings combinatorics, dp, math	3100	x202
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1777
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4861
1954C	Long Multiplication greedy, math, number theory	1200	x15609
1954B	Make It Ugly implementation, math	1200	x15367
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x20301
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x691
1952I	Dark Matter bitmasks, geometry		x348
1952H	Palindrome implementation, strings		x353
1952G	Mathematician Takeover binary search, dfs and similar, math		x923
1952F	Grid brute force		x1640
1952E	Sweep Line combinatorics, games, math		x208
1952D	Are You a Procrastinator? implementation		x4155
1952C	They Have Fooled brute force, schedules		x2717
1952B	Is it stated? strings		x10305
1952A	Are You a Robot, Again? strings		x11372
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x43

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