Problemset - Codeforces

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Codeforces Round 977 (Div. 2)
3 days
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Problems

#	Name
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x9373
1110B	Tape greedy, sortings	1400	x11559
1110A	Parity math	900	x15004
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	x526
1109D	Sasha and Interesting Fact from Graph Theory brute force, combinatorics, dp, math, trees	2400	x1334
1109C	Sasha and a Patient Friend binary search, data structures, implementation	2800	x255
1109B	Sasha and One More Name constructive algorithms, hashing, strings	1800	x4358
1109A	Sasha and a Bit of Relax dp, implementation	1600	x8495
1108F	MST Unification binary search, dsu, graphs, greedy	2100	x2915
1108E2	Array and Segments (Hard version) data structures, implementation	2100	x2206
1108E1	Array and Segments (Easy version) brute force, greedy, implementation	1800	x4535
1108D	Diverse Garland constructive algorithms, dp, greedy	1400	x15160
1108C	Nice Garland brute force, greedy, math	1300	x11964
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x23172
1108A	Two distinct points implementation	800	x21726
1107G	Vasya and Maximum Profit binary search, constructive algorithms, data structures, dp, dsu	2400	x1051
1107F	Vasya and Endless Credits dp, flows, graph matchings, graphs, sortings	2600	x794
1107E	Vasya and Binary String dp	2400	x2291
1107D	Compression dp, implementation, math, number theory	1800	x3725
1107C	Brutality greedy, sortings, two pointers	1300	x9947
1107B	Digital root math, number theory	1000	x15883
1107A	Digits Sequence Dividing greedy, strings	900	x12036
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x978
1106E	Lunar New Year and Red Envelopes data structures, dp	2100	x2555
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x14700
1106C	Lunar New Year and Number Division greedy, implementation, math, sortings	900	x14675
1106B	Lunar New Year and Food Ordering data structures, implementation	1500	x6751
1106A	Lunar New Year and Cross Counting implementation	800	x12334
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1636
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x4090
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x10350
1105B	Zuhair and Strings brute force, implementation, strings	1100	x9897
1105A	Salem and Sticks brute force, implementation	1100	x10941
1104B	Game with string data structures, implementation, math	1200	x14851
1104A	Splitting into digits constructive algorithms, implementation, math	800	x15402
1103E	Radix sum fft, math, number theory	3400	x234
1103D	Professional layer bitmasks, dp	3100	x407
1103C	Johnny Solving constructive algorithms, dfs and similar, graphs, math	2700	x843
1103B	Game with modulo binary search, constructive algorithms, interactive	2000	x3276
1103A	Grid game constructive algorithms, implementation	1400	x9768
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x2000
1102E	Monotonic Renumeration combinatorics, sortings	1700	x5944
1102D	Balanced Ternary String greedy, strings	1500	x7985
1102C	Doors Breaking and Repairing games	1200	x13061
1102B	Array K-Coloring greedy, sortings	1400	x10397
1102A	Integer Sequence Dividing math	800	x24318
1101G	(Zero XOR Subset)-less math, matrices	2300	x1713
1101F	Trucks and Cities binary search, dp	2400	x1335
1101E	Polycarp's New Job implementation	1500	x7810
1101D	GCD Counting data structures, dfs and similar, dp, number theory, trees	2000	x4623
1101C	Division and Union sortings	1500	x8018
1101B	Accordion greedy, implementation	1300	x10484
1101A	Minimum Integer math	1000	x17235
1100F	Ivan and Burgers data structures, divide and conquer, greedy, math	2500	x2427
1100E	Andrew and Taxi binary search, dfs and similar, graphs	2200	x2367
1100D	Dasha and Chess constructive algorithms, games, interactive	2500	x854
1100C	NN and the Optical Illusion binary search, geometry, math	1200	x10089
1100B	Build a Contest data structures, implementation	1300	x11152
1100A	Roman and Browser implementation	1000	x10145
1099F	Cookies binary search, data structures, dfs and similar, dp, games, trees	2400	x946
1099C	Postcard constructive algorithms, implementation	1200	x9621
1099B	Squares and Segments binary search, constructive algorithms, math	1100	x11115
1099A	Snowball implementation	800	x12890
1098F	Ж-function string suffix structures, strings	3500	x226
1098E	Fedya the Potter binary search, implementation, math, number theory	3400	x222
1098D	Eels data structures	2800	x773
1098C	Construct a tree binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x1080
1098B	Nice table brute force, constructive algorithms, greedy, math	2100	x1674
1098A	Sum in the tree constructive algorithms, dfs and similar, greedy, trees	1600	x8753
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x94
1097G	Vladislav and a Great Legend combinatorics, dp, trees	3000	x726
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1254
1097E	Egor and an RPG game constructive algorithms, greedy	3400	x484
1097D	Makoto and a Blackboard dp, math, number theory, probabilities	2200	x2860
1097C	Yuhao and a Parenthesis greedy, implementation	1400	x8445
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x28614
1097A	Gennady and a Card Game brute force, implementation	800	x38754
1096G	Lucky Tickets divide and conquer, dp, fft	2400	x1489
1096F	Inversion Expectation dp, math, probabilities	2300	x1786
1096E	The Top Scorer combinatorics, dp, math, probabilities	2500	x1012
1096D	Easy Problem dp	1800	x8066
1096C	Polygon for the Angle brute force, geometry	1600	x6811
1096B	Substring Removal combinatorics, math, strings	1300	x10579
1096A	Find Divisible greedy, implementation, math	800	x18753
1095F	Make It Connected dsu, graphs, greedy	1900	x6145
1095E	Almost Regular Bracket Sequence implementation	1900	x4110
1095D	Circular Dance implementation	1600	x7553
1095C	Powers Of Two bitmasks, greedy	1400	x16810
1095B	Array Stabilization implementation	900	x21951
1095A	Repeating Cipher implementation	800	x31399
1093G	Multidimensional Queries bitmasks, data structures	2300	x1905
1093F	Vasya and Array dp	2400	x1004
1093E	Intersection of Permutations data structures	2400	x1614
1093D	Beautiful Graph dfs and similar, graphs	1700	x9084
1093C	Mishka and the Last Exam greedy	1300	x9351
1093B	Letters Rearranging constructive algorithms, greedy, sortings, strings	900	x16481
1093A	Dice Rolling math	800	x17693
1092F	Tree with Maximum Cost dfs and similar, dp, trees	1900	x8058
1092E	Minimal Diameter Forest constructive algorithms, dfs and similar, greedy, trees	2000	x1734