Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
37:30:38
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Problems

#	Name
257E	Greedy Elevator data structures, implementation	2200	x299
257D	Sum greedy, math	1900	x1635
257C	View Angle brute force, geometry, math	1800	x4407
257B	Playing Cubes games, greedy, implementation	1300	x7153
257A	Sockets greedy, implementation, sortings	1100	x6521
256E	Lucky Arrays data structures	2400	x670
256D	Liars and Serge dp	2700	x257
255E	Furlo and Rublo and Game games, implementation, math	2200	x876
255D	Mr. Bender and Square binary search, implementation, math	1800	x2019
255C	Almost Arithmetical Progression brute force, dp	1500	x4749
255B	Code Parsing implementation	1200	x5008
255A	Greg's Workout implementation	800	x29110
254E	Dormitory dp, implementation	2100	x678
254D	Rats brute force, dfs and similar, graphs, implementation, shortest paths	2300	x571
254C	Anagram greedy, strings	1800	x1503
254B	Jury Size brute force, implementation	1500	x2162
254A	Cards with Numbers constructive algorithms, sortings	1200	x7141
253E	Printer binary search, data structures, implementation, sortings	2200	x538
253D	Table with Letters - 2 brute force, two pointers	2000	x851
253C	Text Editor data structures, dfs and similar, graphs, greedy, shortest paths	1600	x2646
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10876
253A	Boys and Girls greedy	1100	x11328
252B	Unsorting Array brute force, sortings	1800	x1725
252A	Little Xor brute force, implementation	1100	x5367
251E	Tree and Table dfs and similar, dp, implementation, trees	3000	x172
251D	Two Sets bitmasks, math	2700	x482
251C	Number Transformation dp, greedy, number theory	2000	x1048
251B	Playing with Permutations implementation, math	1800	x1280
251A	Points on Line binary search, combinatorics, two pointers	1300	x18065
250E	Mad Joe brute force	2000	x469
250D	Building Bridge geometry, ternary search, two pointers	1900	x897
250C	Movie Critics greedy	1600	x2015
250B	Restoring IPv6 implementation, strings	1500	x2005
250A	Paper Work greedy	1000	x4167
249E	Endless Matrix math	2600	x328
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x470
248E	Piglet's Birthday dp, math, probabilities	2600	x593
248D	Sweets for Everyone! binary search, greedy, implementation	2300	x502
248C	Robo-Footballer binary search, geometry	2000	x856
248B	Chilly Willy math, number theory	1400	x5375
248A	Cupboards implementation	800	x22720
246E	Blood Cousins Return binary search, data structures, dfs and similar, dp, sortings	2400	x3452
246D	Colorful Graph brute force, dfs and similar, graphs	1600	x9524
246C	Beauty Pageant brute force, constructive algorithms, greedy	1600	x2647
246B	Increase and Decrease greedy, math	1300	x11398
246A	Buggy Sorting constructive algorithms, greedy, sortings	900	x9342
245H	Queries for Number of Palindromes dp, hashing, strings	1800	x6921
245G	Suggested Friends brute force, graphs	2200	x461
245F	Log Stream Analysis binary search, brute force, implementation, strings	2000	x897
245E	Mishap in Club greedy, implementation	1400	x3307
245D	Restoring Table constructive algorithms, greedy	1500	x2336
245C	Game with Coins greedy	1700	x1554
245B	Internet Address implementation, strings	1100	x5251
245A	System Administrator implementation	800	x8522
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x4533
244A	Dividing Orange implementation	900	x7989
243E	Matrix data structures	3000	x192
243D	Cubes data structures, dp, geometry, two pointers	2700	x222
243C	Colorado Potato Beetle dfs and similar, implementation	2200	x530
243B	Hydra graphs, sortings	2000	x1244
243A	The Brand New Function bitmasks	1600	x3966
242E	XOR on Segment bitmasks, data structures	2000	x9588
242D	Dispute dfs and similar, graphs, greedy	2100	x1886
242C	King's Path dfs and similar, graphs, hashing, shortest paths	1800	x8849
242B	Big Segment implementation, sortings	1100	x15928
242A	Heads or Tails brute force, implementation	1100	x6411
241G	Challenging Balloons constructive algorithms	1900	x550
241F	Race brute force, implementation	2300	x265
241E	Flights graphs, shortest paths	2600	x1119
241D	Numbers	2900	x382
241C	Mirror Box geometry, implementation	2000	x512
241B	Friends binary search, bitmasks, data structures, math	2700	x837
241A	Old Peykan greedy	1300	x2253
240F	TorCoder data structures	2600	x1984
240E	Road Repairs dfs and similar, graphs, greedy	2800	x357
239B	Easy Tape Programming brute force, implementation	1500	x1376
239A	Two Bags of Potatoes greedy, implementation, math	1200	x19112
238E	Meeting Her dp, graphs, shortest paths	2600	x400
238D	Tape Programming data structures, implementation	2900	x253
238C	World Eater Brothers dfs and similar, dp, greedy, trees	2100	x1251
238B	Boring Partition constructive algorithms	1800	x1336
238A	Not Wool Sequences constructive algorithms, math	1300	x2054
237E	Build String flows, graphs	2000	x1765
237D	T-decomposition dfs and similar, graphs, greedy, trees	2000	x570
237C	Primes on Interval binary search, number theory, two pointers	1600	x5889
237B	Young Table implementation, sortings	1500	x2246
237A	Free Cash implementation	1000	x27131
236B	Easy Number Challenge implementation, number theory	1300	x14520
236A	Boy or Girl brute force, implementation, strings	800	x218989
235E	Number Challenge combinatorics, dp, implementation, math, number theory	2600	x780
235D	Graph Game graphs	3000	x509
235C	Cyclical Quest data structures, string suffix structures, strings	2700	x2165
235B	Let's Play Osu! dp, math, probabilities	2000	x3616
235A	LCM Challenge number theory	1600	x18083
234H	Merging Two Decks constructive algorithms, greedy	2000	x573
234G	Practice constructive algorithms, divide and conquer, implementation	1600	x1485
234F	Fence dp	1800	x1781
234E	Champions' League implementation	1600	x1002
234D	Cinema implementation	1600	x1541
234C	Weather dp, implementation	1300	x5591