Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
18:55:08
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Problems

#	Name
1981F	Turtle and Paths on a Tree data structures, dp, trees		x58
1981E	Turtle and Intersected Segments data structures, dsu, graphs, greedy		x311
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory		x683
1981C	Turtle and an Incomplete Sequence bitmasks, constructive algorithms, greedy, implementation, math		x2858
1981B	Turtle and an Infinite Sequence bitmasks, math		x8639
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math		x15352
1977E	Tensor constructive algorithms, graphs, interactive	2600	x367
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1147
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x4711
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x13919
1977A	Little Nikita math	800	x23501
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees		x259
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees		x553
1976D	Invertible Bracket Sequences binary search, combinatorics, data structures, divide and conquer, implementation, two pointers		x2646
1976C	Job Interview binary search, dp, greedy, implementation, two pointers		x7450
1976B	Increase/Decrease/Copy greedy, implementation		x17387
1976A	Verify Password implementation, sortings		x22741
1975I	Mind Bloom dp	3500	x21
1975H	378QAQ and Core greedy, strings	3500	x38
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x139
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x524
1975E	Chain Queries binary search, data structures, dfs and similar, implementation, trees	2100	x1566
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x4281
1975C	Chamo and Mocha's Array binary search, brute force, greedy	1200	x10773
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x13398
1975A	Bazoka and Mocha's Array brute force, greedy, implementation, sortings	800	x15283
1974G	Money Buys Less Happiness Now data structures, greedy, sortings	2000	x3140
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x2652
1974E	Money Buys Happiness dp	1800	x5749
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x11507
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x12356
1974B	Symmetric Encoding implementation, sortings, strings	800	x25905
1974A	Phone Desktop greedy, math	800	x28080
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x139
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x602
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1537
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x6609
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x11413
1973A	Chess For Three brute force, dp, implementation, math	900	x20105
1972B	Coin Games games	900	x17809
1972A	Contest Proposal brute force, greedy, two pointers	800	x19685
1971H	±1 2-sat, dfs and similar, graphs	2100	x1262
1971G	XOUR data structures, dsu, sortings	1400	x7213
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x7669
1971E	Find the Car binary search, math, sortings	1500	x10835
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x21107
1971C	Clock and Strings implementation	900	x26341
1971B	Different String implementation, strings	800	x29897
1971A	My First Sorting Problem implementation, sortings	800	x36033
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x210
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees	2200	x382
1970G1	Min-Fund Prison (Easy) dfs and similar, trees	1900	x863
1970F3	Playing Quidditch (Hard) implementation	2300	x283
1970F2	Playing Quidditch (Medium) implementation	2300	x275
1970F1	Playing Quidditch (Easy) implementation	2300	x344
1970E3	Trails (Hard) dp, matrices	2200	x439
1970E2	Trails (Medium) dp, matrices	2000	x776
1970E1	Trails (Easy) dp	1800	x1205
1970D3	Arithmancy (Hard) interactive	3100	x72
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x139
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x441
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x913
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x1545
1970C1	Game on Tree (Easy) games	1400	x1968
1970B3	Exact Neighbours (Hard) constructive algorithms	2300	x342
1970B2	Exact Neighbours (Medium) constructive algorithms	2100	x529
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	x745
1970A3	Balanced Unshuffle (Hard) constructive algorithms, trees	2400	x358
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees	2400	x362
1970A1	Balanced Shuffle (Easy) implementation, sortings	1000	x2880
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x150
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x1030
1969D	Shop Game data structures, greedy, math, sortings	1900	x3654
1969C	Minimizing the Sum dp, implementation	1700	x6751
1969B	Shifts and Sorting constructive algorithms, greedy	1000	x15736
1969A	Two Friends constructive algorithms, implementation, math	800	x17315
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1505
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3397
1968F	Equal XOR Segments binary search, data structures	1800	x4343
1968E	Cells Arrangement constructive algorithms	1600	x8547
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x12511
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x21027
1968B	Prefiquence greedy, two pointers	800	x24561
1968A	Maximize? brute force, math, number theory	800	x29048
1967F	Next and Prev brute force, data structures, implementation	3200	x40
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x68
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x142
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x493
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1395
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3302
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x10829
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x10133
1966B	Rectangle Filling constructive algorithms, implementation	1100	x12652
1966A	Card Exchange constructive algorithms, games, greedy	800	x15599
1965F	Conference data structures, flows	3300	x99
1965E	Connected Cubes constructive algorithms, games	3100	x195
1965D	Missing Subarray Sum constructive algorithms	2900	x295
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1536
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x5480
1965A	Everything Nim games, greedy, math, sortings	1400	x11140

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