Problemset - Codeforces

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Codeforces Round 940 (Div. 2)
5 days

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Problems

#	Name
217E	Alien DNA data structures, dsu, trees	2800	x289
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x288
1662C	European Trip dp, graphs, math, matrices		x288
418E	Tricky Password data structures	3100	x288
177F1	Script Generation	1800	x288
175D	Plane of Tanks: Duel brute force, dp, math, probabilities	2400	x288
822F	Madness constructive algorithms, dfs and similar, trees	2500	x287
130E	Tribonacci numbers *special problem	1600	x287
249E	Endless Matrix math	2600	x286
1949D	Funny or Scary? constructive algorithms		x285
178E1	The Beaver's Problem - 2	1900	x285
36C	Bowls geometry, implementation	2200	x285
1718D	Permutation for Burenka data structures, graph matchings, greedy, math, trees	3300	x284
1172E	Nauuo and ODT data structures	3300	x284
717F	Heroes of Making Magic III data structures	2600	x284
188F	Binary Notation *special problem, implementation	1400	x284
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x283
1682F	MCMF? data structures, flows, graphs, greedy, sortings, two pointers	2700	x283
1403A	The Potion of Great Power *special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers	2400	x283
1605F	PalindORme combinatorics, dp	2900	x282
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x282
1332G	No Monotone Triples data structures	3100	x281
64D	Presents *special problem, greedy	1800	x281
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x280
497E	Subsequences Return dp, matrices	2900	x280
449E	Jzzhu and Squares dp, math, number theory	2900	x280
178C2	Smart Beaver and Resolving Collisions	1900	x280
1070L	Odd Federalization constructive algorithms	2600	x279
288E	Polo the Penguin and Lucky Numbers dp, implementation, math	2800	x279
1726G	A Certain Magical Party combinatorics, data structures, greedy, sortings	3300	x278
1356B2	Decrement *special problem		x278
1356B1	Increment *special problem		x278
933D	A Creative Cutout brute force, combinatorics, math	2900	x278
843E	Maximum Flow flows, graphs	3000	x278
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x278
232C	Doe Graphs constructive algorithms, divide and conquer, dp, graphs, shortest paths	2600	x278
182A	Battlefield geometry, graphs, implementation, shortest paths	2200	x277
1572E	Polygon binary search, dp, geometry	3000	x276
1109F	Sasha and Algorithm of Silence's Sounds data structures, trees	3200	x276
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2400	x276
303D	Rotatable Number math, number theory	2600	x276
1214G	Feeling Good bitmasks, data structures	3200	x275
838C	Future Failure dp, games	2800	x275
832E	Vasya and Shifts matrices	2600	x275
203E	Transportation greedy, sortings, two pointers	2300	x275
257E	Greedy Elevator data structures, implementation	2200	x274
1693F	I Might Be Wrong binary search, greedy, two pointers	3400	x273
1495F	Squares constructive algorithms, data structures, dp, graphs, trees	3300	x273
543E	Listening to Music constructive algorithms, data structures	3200	x273
1425B	Blue and Red of Our Faculty! divide and conquer, dp	2600	x272
130G	CAPS LOCK ON *special problem	1700	x272
1528F	AmShZ Farm combinatorics, fft, math	3300	x271
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x271
704E	Iron Man data structures, geometry, trees	3300	x271
593C	Beautiful Function constructive algorithms, math	2200	x271
220D	Little Elephant and Triangle geometry, math	2500	x271
130F	Prime factorization *special problem	1600	x271
1116D1	Block diagonal matrix		x270
207A1	Beaver's Calculator 1.0 greedy	1600	x269
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x268
1533E	Chess Team Forming *special problem, binary search, data structures, greedy		x268
1464F	My Beautiful Madness data structures, trees	3500	x268
121D	Lucky Segments binary search, implementation, two pointers	2500	x268
1531E3	Сортировка слиянием *special problem, binary search		x267
1416E	Split binary search, data structures, dp, greedy	3200	x267
1110H	Modest Substrings dp, strings	3500	x267
1012E	Cycle sort dsu, math	3100	x267
105C	Item World brute force, implementation, sortings	2200	x267
75E	Ship's Shortest Path geometry, shortest paths	2400	x267
1939C	More Gifts *special problem, dfs and similar, two pointers		x266
1446F	Line Distance binary search, data structures, geometry	3200	x266
172E	BHTML+BCSS *special problem, dfs and similar, expression parsing	2200	x266
1588F	Jumping Through the Array binary search, data structures, graphs, two pointers	3500	x265
1456E	XOR-ranges dp, greedy	3500	x265
100E	Lamps in a Line *special problem, math	1600	x265
76C	Mutation bitmasks, dp, math	2700	x265
45B	School dp, dsu	2200	x265
1864H	Asterism Stream dp, math, matrices	3200	x264
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x264
1083F	The Fair Nut and Amusing Xor data structures	3300	x264
457D	Bingo! combinatorics, math, probabilities	2700	x264
171H	A polyline *special problem, implementation	1700	x264
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x263
1866J	Jackets and Packets dp	2800	x263
1866E	Elevators of Tamem dp	2700	x263
1696G	Fishingprince Plays With Array Again brute force, data structures, geometry, math	3300	x263
1344E	Train Tracks data structures, trees	3100	x263
1031F	Familiar Operations brute force, graphs, math	2800	x263
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x262
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x262
1039E	Summer Oenothera Exhibition data structures	3400	x262
1002C2	Distinguish zero state and plus state without errors	1800	x262
886F	Symmetric Projections geometry	2900	x262
38H	The Great Marathon dp	2400	x262
1482G	Vabank binary search, interactive	3200	x261
1310E	Strange Function dp	2900	x261
1205E	Expected Value Again combinatorics, strings	3100	x261
1002A4	Generate W state	1900	x261
394D	Physical Education and Buns brute force, implementation, math		x261
1603F	October 18, 2017 combinatorics, dp, implementation, math	2700	x260