Problemset - Codeforces

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Codeforces Round 957 (Div. 3)
3 days
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Problems

#	Name
245G	Suggested Friends brute force, graphs	2200	x425
245F	Log Stream Analysis binary search, brute force, implementation, strings	2000	x871
245E	Mishap in Club greedy, implementation	1400	x3247
245D	Restoring Table constructive algorithms, greedy	1500	x2262
245C	Game with Coins greedy	1700	x1526
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x4413
243E	Matrix data structures	3000	x172
243D	Cubes data structures, dp, geometry, two pointers	2700	x211
243C	Colorado Potato Beetle dfs and similar, implementation	2200	x524
243B	Hydra graphs, sortings	2000	x1188
243A	The Brand New Function bitmasks	1600	x3843
242E	XOR on Segment bitmasks, data structures	2000	x8689
242D	Dispute dfs and similar, graphs, greedy	2100	x1852
242C	King's Path dfs and similar, graphs, hashing, shortest paths	1800	x8267
241G	Challenging Balloons constructive algorithms	1900	x541
241F	Race brute force, implementation	2300	x261
241E	Flights graphs, shortest paths	2600	x1013
241D	Numbers	2900	x348
241C	Mirror Box geometry, implementation	2000	x509
241B	Friends binary search, bitmasks, data structures, math	2700	x760
240F	TorCoder data structures	2600	x1824
240E	Road Repairs dfs and similar, graphs, greedy	2800	x354
239B	Easy Tape Programming brute force, implementation	1500	x1365
238E	Meeting Her dp, graphs, shortest paths	2600	x348
238D	Tape Programming data structures, implementation	2900	x246
238C	World Eater Brothers dfs and similar, dp, greedy, trees	2100	x1133
238B	Boring Partition constructive algorithms	1800	x1279
237E	Build String flows, graphs	2000	x1612
237D	T-decomposition dfs and similar, graphs, greedy, trees	2000	x550
237C	Primes on Interval binary search, number theory, two pointers	1600	x5627
237B	Young Table implementation, sortings	1500	x2223
235E	Number Challenge combinatorics, dp, implementation, math, number theory	2600	x761
235D	Graph Game graphs	3000	x480
235C	Cyclical Quest data structures, string suffix structures, strings	2700	x2045
235B	Let's Play Osu! dp, math, probabilities	2000	x3396
235A	LCM Challenge number theory	1600	x17230
234H	Merging Two Decks constructive algorithms, greedy	2000	x558
234G	Practice constructive algorithms, divide and conquer, implementation	1600	x1464
234F	Fence dp	1800	x1720
234E	Champions' League implementation	1600	x993
234D	Cinema implementation	1600	x1519
233B	Non-square Equation binary search, brute force, math	1400	x7367
232E	Quick Tortoise bitmasks, divide and conquer, dp	3000	x682
232D	Fence binary search, data structures, string suffix structures	2900	x444
232C	Doe Graphs constructive algorithms, divide and conquer, dp, graphs, shortest paths	2600	x283
232B	Table bitmasks, combinatorics, dp, math	1900	x1394
232A	Cycles binary search, constructive algorithms, graphs, greedy	1600	x2476
231E	Cactus data structures, dfs and similar, dp, graphs, trees	2100	x1630
231D	Magic Box brute force, geometry	1600	x4050
231C	To Add or Not to Add binary search, sortings, two pointers	1600	x8448
231B	Magic, Wizardry and Wonders constructive algorithms, greedy	1500	x3573
229E	Gifts combinatorics, dp, math, probabilities	2600	x455
229D	Towers dp, greedy, two pointers	2100	x2139
229C	Triangles combinatorics, graphs, math	1900	x1603
229B	Planets binary search, data structures, graphs, shortest paths	1700	x4527
229A	Shifts brute force, two pointers	1500	x3466
228E	The Road to Berland is Paved With Good Intentions 2-sat, dfs and similar, dsu, graphs	1900	x2376
228D	Zigzag data structures	2100	x377
228C	Fractal Detector dp, hashing	2000	x446
228B	Two Tables brute force, implementation	1400	x3442
226E	Noble Knight's Path data structures, trees	2900	x450
226D	The table constructive algorithms, greedy	2100	x953
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x850
226B	Naughty Stone Piles greedy	1900	x1540
226A	Flying Saucer Segments math	1400	x3927
225E	Unsolvable math, number theory	2100	x787
225D	Snake bitmasks, dfs and similar, graphs, implementation	2200	x918
225C	Barcode dp, matrices	1700	x8870
225B	Well-known Numbers binary search, greedy, number theory	1600	x3122
224B	Array bitmasks, implementation, two pointers	1500	x7219
223E	Planar Graph flows, geometry, graphs	3000	x191
223D	Spider geometry, graphs	3000	x70
223C	Partial Sums combinatorics, math, number theory	1900	x1518
223B	Two Strings data structures, dp, strings	1900	x1741
223A	Bracket Sequence data structures, expression parsing, implementation	1700	x2491
222E	Decoding Genome dp, matrices	1900	x2612
222D	Olympiad binary search, greedy, sortings, two pointers	1900	x2141
222C	Reducing Fractions implementation, math, number theory, sortings	1800	x2121
220E	Little Elephant and Inversions data structures, two pointers	2400	x1345
220D	Little Elephant and Triangle geometry, math	2500	x277
220C	Little Elephant and Shifts data structures	2100	x928
220B	Little Elephant and Array constructive algorithms, data structures	1800	x9635
219E	Parking Lot data structures	2200	x604
219D	Choosing Capital for Treeland dfs and similar, dp, graphs, trees	1700	x8886
219C	Color Stripe brute force, dp, greedy	1600	x6588
219B	Special Offer! Super Price 999 Bourles! implementation	1400	x5751
217E	Alien DNA data structures, dsu, trees	2800	x296
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x246
217C	Formurosa divide and conquer, dp, expression parsing	2600	x323
217B	Blackboard Fibonacci brute force, math	2100	x873
216E	Martian Luck math, number theory	2000	x557
216D	Spider's Web binary search, sortings, two pointers	1700	x1334
216C	Hiring Staff greedy	1800	x1810
216B	Forming Teams dfs and similar, implementation	1700	x6197
215E	Periodical Numbers combinatorics, dp, number theory	2100	x543
215D	Hot Days greedy	1900	x1582
215C	Crosses brute force, implementation	2100	x660
214B	Hometask brute force, constructive algorithms, greedy, math	1600	x4922
213E	Two Permutations data structures, hashing, strings	2700	x777
213D	Stars constructive algorithms, geometry	2300	x335