Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
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Problems

#	Name
1119G	Get Ready for the Battle constructive algorithms, implementation	3100	x499
1119F	Niyaz and Small Degrees data structures, dp, trees	3400	x718
1119E	Pavel and Triangles brute force, dp, fft, greedy, ternary search	1900	x4988
1119D	Frets On Fire binary search, sortings	1800	x4820
1119C	Ramesses and Corner Inversion constructive algorithms, greedy, implementation, math	1500	x6823
1119B	Alyona and a Narrow Fridge binary search, flows, greedy, sortings	1300	x10912
1119A	Ilya and a Colorful Walk greedy, implementation	1100	x10717
1118F2	Tree Cutting (Hard Version) combinatorics, dfs and similar, dp, trees	2700	x534
1118F1	Tree Cutting (Easy Version) dfs and similar, trees	1800	x5911
1118E	Yet Another Ball Problem constructive algorithms, implementation	1700	x4134
1118D2	Coffee and Coursework (Hard Version) binary search, greedy	1700	x6262
1118D1	Coffee and Coursework (Easy version) brute force, greedy	1700	x5669
1118C	Palindromic Matrix constructive algorithms, implementation	1700	x5763
1118B	Tanya and Candies implementation	1200	x12112
1118A	Water Buying math	800	x20068
1117G	Recursive Queries data structures	2500	x680
1117F	Crisp String bitmasks, dp	2500	x576
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1507
1117D	Magic Gems dp, math, matrices	2100	x4217
1117C	Magic Ship binary search	1900	x6967
1117B	Emotes greedy, math, sortings	1000	x14318
1117A	Best Subsegment implementation, math	1100	x11002
1116D6	Hessenberg matrix		x79
1116D5	Creeper		x149
1116D4	TIE fighter		x169
1116D3	X-wing fighter		x203
1116D2	Pattern of increasing blocks		x233
1116D1	Block diagonal matrix		x275
1116C3	``Is the number of ones divisible by 3?'' oracle		x184
1116C2	``Is the bit string periodic?'' oracle		x186
1116C1	Alternating bits oracle		x264
1116B2	Not A, not B or not C?		x59
1116B1	Distinguish three-qubit states		x133
1116A2	Generate equal superposition of four basis states		x180
1116A1	Generate state \|00⟩ + \|01⟩ + \|10⟩		x323
1115U3	Block unitary *special problem	1700	x197
1115U2	Chessboard unitary *special problem	1600	x234
1115U1	Anti-diagonal unitary *special problem	1500	x256
1115G3	Palindrome checker oracle *special problem	1600	x231
1115G2	OR oracle *special problem	1600	x312
1115G1	AND oracle *special problem	1100	x388
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1942
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2200	x2826
1114D	Flood Fill dp	1900	x6768
1114C	Trailing Loves (or L'oeufs?) brute force, implementation, math, number theory	1700	x7369
1114B	Yet Another Array Partitioning Task constructive algorithms, greedy, sortings	1500	x8957
1114A	Got Any Grapes? brute force, greedy, implementation	800	x18532
1113B	Sasha and Magnetic Machines greedy, number theory	1300	x7716
1113A	Sasha and His Trip dp, greedy, math	900	x17263
1111E	Tree data structures, dfs and similar, dp, graphs, trees	2500	x919
1111D	Destroy the Colony combinatorics, dp, math	2600	x960
1111C	Creative Snap binary search, brute force, divide and conquer, math	1700	x6240
1111B	Average Superhero Gang Power brute force, implementation, math	1700	x6239
1111A	Superhero Transformation implementation, strings	1000	x16856
1110H	Modest Substrings dp, strings	3500	x282
1110G	Tree-Tac-Toe constructive algorithms, games, trees	3100	x619
1110F	Nearest Leaf data structures, trees	2600	x1731
1110E	Magic Stones constructive algorithms, math, sortings	2200	x4155
1110D	Jongmah dp	2200	x3530
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x9351
1110B	Tape greedy, sortings	1400	x11497
1110A	Parity math	900	x14973
1109F	Sasha and Algorithm of Silence's Sounds data structures, trees	3200	x292
1109E	Sasha and a Very Easy Test data structures, number theory	2700	x524
1109D	Sasha and Interesting Fact from Graph Theory brute force, combinatorics, dp, math, trees	2400	x1333
1109C	Sasha and a Patient Friend binary search, data structures, implementation	2800	x253
1109B	Sasha and One More Name constructive algorithms, hashing, strings	1800	x4348
1109A	Sasha and a Bit of Relax dp, implementation	1600	x8484
1108F	MST Unification binary search, dsu, graphs, greedy	2100	x2894
1108E2	Array and Segments (Hard version) data structures, implementation	2100	x2198
1108E1	Array and Segments (Easy version) brute force, greedy, implementation	1800	x4525
1108D	Diverse Garland constructive algorithms, dp, greedy	1400	x15044
1108C	Nice Garland brute force, greedy, math	1300	x11952
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x23118
1108A	Two distinct points implementation	800	x21706
1107G	Vasya and Maximum Profit binary search, constructive algorithms, data structures, dp, dsu	2400	x1042
1107F	Vasya and Endless Credits dp, flows, graph matchings, graphs, sortings	2600	x781
1107E	Vasya and Binary String dp	2400	x2283
1107D	Compression dp, implementation, math, number theory	1800	x3721
1107C	Brutality greedy, sortings, two pointers	1300	x9937
1107B	Digital root math, number theory	1000	x15558
1107A	Digits Sequence Dividing greedy, strings	900	x12025
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x974
1106E	Lunar New Year and Red Envelopes data structures, dp	2100	x2552
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x14634
1106C	Lunar New Year and Number Division greedy, implementation, math, sortings	900	x14650
1106B	Lunar New Year and Food Ordering data structures, implementation	1500	x6745
1106A	Lunar New Year and Cross Counting implementation	800	x12325
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1631
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x4081
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x10332
1105B	Zuhair and Strings brute force, implementation, strings	1100	x9886
1105A	Salem and Sticks brute force, implementation	1100	x10924
1104B	Game with string data structures, implementation, math	1200	x14824
1104A	Splitting into digits constructive algorithms, implementation, math	800	x15393
1103E	Radix sum fft, math, number theory	3400	x232
1103D	Professional layer bitmasks, dp	3100	x406
1103C	Johnny Solving constructive algorithms, dfs and similar, graphs, math	2700	x841
1103B	Game with modulo binary search, constructive algorithms, interactive	2000	x3269
1103A	Grid game constructive algorithms, implementation	1400	x9755