Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
12:05:43
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Problems

#	Name
725E	Too Much Money brute force, greedy	2600	x658
725D	Contest Balloons data structures, greedy	1800	x2817
725C	Hidden Word brute force, constructive algorithms, implementation, strings	1600	x2661
725B	Food on the Plane implementation, math	1200	x5164
725A	Jumping Ball implementation	1000	x7108
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x1085
724F	Uniformly Branched Trees combinatorics, dp, trees	2700	x430
724E	Goods transportation dp, flows, greedy	2900	x1368
724D	Dense Subsequence data structures, greedy, strings	1900	x2346
724C	Ray Tracing greedy, hashing, implementation, math, number theory, sortings	1800	x2147
724B	Batch Sort brute force, greedy, implementation, math	1500	x4019
724A	Checking the Calendar implementation	1000	x7112
723F	st-Spanning Tree dsu, graphs, greedy, implementation	2300	x1520
723E	One-Way Reform constructive algorithms, dfs and similar, flows, graphs, greedy	2200	x2002
723D	Lakes in Berland dfs and similar, dsu, graphs, greedy, implementation	1600	x7001
723C	Polycarp at the Radio greedy	1600	x4734
723B	Text Document Analysis expression parsing, implementation, strings	1100	x10234
723A	The New Year: Meeting Friends implementation, math, sortings	800	x81087
722F	Cyclic Cipher chinese remainder theorem, data structures, implementation, number theory, two pointers	2800	x523
722E	Research Rover combinatorics, dp	2900	x891
722D	Generating Sets binary search, data structures, dfs and similar, greedy, strings, trees	1900	x3203
722C	Destroying Array data structures, dsu	1600	x9602
722B	Verse Pattern implementation, strings	1200	x6522
722A	Broken Clock brute force, implementation	1300	x6657
721E	Road to Home binary search, dp	2700	x308
721D	Maxim and Array constructive algorithms, data structures, greedy, math	2000	x2363
721C	Journey dp, graphs	1800	x5939
721B	Passwords implementation, math, sortings, strings	1100	x12126
721A	One-dimensional Japanese Crossword implementation	800	x18657
720F	Array Covering data structures	3100	x156
720E	Cipher implementation	3100	x65
720D	Slalom data structures, dp, sortings	3100	x308
720C	Homework constructive algorithms	3100	x105
720B	Cactusophobia dfs and similar, flows	2400	x408
720A	Closing ceremony greedy	2000	x866
719B	Anatoly and Cockroaches greedy	1400	x8525
719A	Vitya in the Countryside implementation	1100	x15574
718E	Matvey's Birthday bitmasks, graphs	3300	x362
718D	Andrew and Chemistry dp, hashing, trees	2900	x397
718C	Sasha and Array data structures, math, matrices	2300	x3940
718A	Efim and Strange Grade dp, implementation, math	1700	x4405
717I	Cowboy Beblop at his computer geometry	2800	x209
717H	Pokermon League challenge math, probabilities	2400	x430
717G	Underfail flows	2400	x675
717F	Heroes of Making Magic III data structures	2600	x335
717E	Paint it really, really dark gray dfs and similar	1900	x1479
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1447
717C	Potions Homework implementation, sortings	1200	x4019
717B	R3D3’s Summer Adventure dp, greedy	2700	x157
717A	Festival Organization combinatorics, math, number theory	2900	x373
716B	Complete the Word greedy, two pointers	1300	x12271
716A	Crazy Computer implementation	800	x22565
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x358
715D	Create a Maze constructive algorithms	3100	x304
715C	Digit Tree dfs and similar, divide and conquer, dsu, trees	2700	x2183
715B	Complete The Graph binary search, constructive algorithms, graphs, shortest paths	2300	x2946
715A	Plus and Square Root constructive algorithms, math	1600	x5645
714B	Filya and Homework implementation, sortings	1200	x14629
714A	Meeting of Old Friends implementation, math	1100	x10818
713E	Sonya Partymaker binary search, dp	3300	x355
713D	Animals and Puzzle binary search, data structures	2700	x1167
713C	Sonya and Problem Wihtout a Legend dp, sortings	2300	x5585
713B	Searching Rectangles binary search, constructive algorithms, interactive	2200	x1460
713A	Sonya and Queries data structures, implementation	1400	x8523
712E	Memory and Casinos data structures, math, probabilities	2500	x622
712D	Memory and Scores combinatorics, dp, math	2200	x1854
712C	Memory and De-Evolution greedy, math	1600	x5883
712B	Memory and Trident implementation, strings	1100	x9799
712A	Memory and Crow implementation, math	800	x11945
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1280
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4521
711C	Coloring Trees dp	1700	x8326
711B	Chris and Magic Square constructive algorithms, implementation	1400	x8436
711A	Bus to Udayland brute force, implementation	800	x29657
710F	String Set Queries brute force, data structures, hashing, interactive, string suffix structures, strings	2400	x1936
710E	Generate a String dfs and similar, dp	2000	x5258
710D	Two Arithmetic Progressions math, number theory	2500	x1380
710C	Magic Odd Square constructive algorithms, math	1500	x5159
710B	Optimal Point on a Line brute force, sortings	1400	x8835
710A	King Moves implementation	800	x13893
709B	Checkpoints greedy, implementation, sortings	1500	x4756
709A	Juicer implementation	900	x32921
708E	Student's Camp dp, math	3100	x1017
708D	Incorrect Flow flows	2900	x783
708C	Centroids data structures, dfs and similar, dp, graphs, greedy, trees	2300	x3416
708B	Recover the String constructive algorithms, greedy, implementation, math	1900	x3271
708A	Letters Cyclic Shift constructive algorithms, greedy, implementation, strings	1200	x9081
707E	Garlands data structures	2400	x1235
707D	Persistent Bookcase bitmasks, data structures, dfs and similar, implementation	2200	x2734
707C	Pythagorean Triples math, number theory	1500	x12740
707B	Bakery graphs	1300	x13007
707A	Brain's Photos implementation	800	x50014
706E	Working routine data structures, implementation	2500	x1195
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x10309
706C	Hard problem dp, strings	1600	x16614
706B	Interesting drink binary search, dp, implementation	1100	x65535
706A	Beru-taxi brute force, geometry, implementation	900	x14576
705B	Spider Man games, math	1100	x9198
705A	Hulk implementation	800	x110062
704E	Iron Man data structures, geometry, trees	3300	x284