Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
38:18:27
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Problems

#	Name
283A	Cows and Sequence constructive algorithms, data structures, implementation	1600	x6600
282E	Sausage Maximization bitmasks, data structures, trees	2200	x3662
282D	Yet Another Number Game dp, games	2100	x1449
282C	XOR and OR constructive algorithms, implementation, math	1500	x9475
282B	Painting Eggs greedy, math	1500	x13082
282A	Bit++ implementation	800	x273245
281B	Nearest Fraction brute force, implementation, two pointers	1700	x3045
281A	Word Capitalization implementation, strings	800	x219370
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x207
280D	k-Maximum Subsequence Sum data structures, flows, graphs, implementation	2800	x1341
280C	Game on Tree implementation, math, probabilities, trees	2200	x4188
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x4776
280A	Rectangle Puzzle geometry	2000	x1474
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1458
279D	The Minimum Number of Variables bitmasks, dp	2200	x779
279C	Ladder dp, implementation, two pointers	1700	x8317
279B	Books binary search, brute force, implementation, two pointers	1400	x54825
279A	Point on Spiral brute force, geometry, implementation	1400	x5633
278B	New Problem brute force, strings	1500	x3468
278A	Circle Line implementation	800	x11923
277E	Binary Tree on Plane flows, trees	2400	x1332
277D	Google Code Jam dp, probabilities	2800	x340
277C	Game games, implementation	2400	x456
277B	Set of Points constructive algorithms, geometry	2300	x814
277A	Learning Languages dfs and similar, dsu	1400	x19224
276E	Little Girl and Problem on Trees data structures, graphs, trees	2100	x1625
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x14081
276C	Little Girl and Maximum Sum data structures, greedy, implementation, sortings	1500	x27952
276B	Little Girl and Game games, greedy	1300	x28976
276A	Lunch Rush implementation	900	x27936
275B	Convex Shape constructive algorithms, implementation	1700	x2829
275A	Lights Out implementation	900	x30726
274E	Mirror Room data structures, implementation	3000	x313
274D	Lovely Matrix dfs and similar, graphs, greedy, sortings	2200	x1045
274C	The Last Hole! brute force, geometry	2600	x350
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x5065
274A	k-Multiple Free Set binary search, greedy, sortings	1500	x10138
273E	Dima and Game dp, games	2600	x366
273D	Dima and Figure dp	2400	x421
272E	Dima and Horses combinatorics, constructive algorithms, graphs	2200	x1231
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2639
272C	Dima and Staircase data structures, implementation	1500	x6823
272B	Dima and Sequence implementation, math	1400	x4043
272A	Dima and Friends implementation, math	1000	x24950
271E	Three Horses constructive algorithms, math, number theory	2200	x508
271D	Good Substrings data structures, strings	1800	x11612
271C	Secret constructive algorithms, implementation	1500	x3005
271B	Prime Matrix binary search, brute force, math, number theory	1300	x13293
271A	Beautiful Year brute force	800	x143454
270B	Multithreading data structures, greedy, implementation	1400	x4200
270A	Fancy Fence geometry, implementation, math	1100	x46109
269E	String Theory geometry, math, strings	3100	x109
269D	Maximum Waterfall data structures, dp, graphs, sortings	2600	x453
269C	Flawed Flow constructive algorithms, flows, graphs, greedy	2100	x1691
269B	Greenhouse Effect dp	1700	x6364
269A	Magical Boxes greedy, math	1600	x3539
268E	Playlist math, probabilities, sortings	2100	x1028
268D	Wall Bars dp	2300	x511
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x13747
268B	Buttons implementation, math	1000	x32876
268A	Games brute force	800	x88627
267C	Berland Traffic math, matrices	2700	x166
267B	Dominoes dfs and similar, graphs	2000	x649
267A	Subtractions math, number theory	900	x7658
266E	More Queries to Array... data structures, math	2500	x931
266D	BerDonalds graphs, math, shortest paths	2400	x902
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1357
266B	Queue at the School constructive algorithms, graph matchings, implementation, shortest paths	800	x139117
266A	Stones on the Table implementation	800	x197348
265B	Roadside Trees (Simplified Edition) greedy, implementation	1000	x17309
265A	Colorful Stones (Simplified Edition) implementation	800	x37391
264E	Roadside Trees data structures, dp	3000	x437
264D	Colorful Stones dp, two pointers	2500	x422
264C	Choosing Balls dp	2000	x2973
264B	Good Sequences dp, number theory	1500	x10518
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x10888
263E	Rhombus brute force, data structures, dp	2500	x403
263D	Cycle in Graph dfs and similar, graphs	1800	x3658
263C	Circle of Numbers brute force, dfs and similar, implementation	2000	x1081
263B	Squares greedy, implementation, sortings	900	x9050
263A	Beautiful Matrix implementation	800	x253010
262B	Roma and Changing Signs greedy	1200	x11485
262A	Roma and Lucky Numbers implementation	800	x20254
261E	Maxim and Calculator brute force, dp, two pointers	2800	x416
261D	Maxim and Increasing Subsequence dp	2600	x585
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x780
261B	Maxim and Restaurant dp, math, probabilities	1900	x1421
261A	Maxim and Discounts greedy, sortings	1400	x5257
260E	Dividing Kingdom binary search, brute force, data structures	2500	x460
260D	Black and White Tree constructive algorithms, dsu, graphs, greedy, trees	2100	x1563
260C	Balls and Boxes constructive algorithms, greedy, implementation	1700	x2994
260B	Ancient Prophesy brute force, implementation, strings	1600	x3837
260A	Adding Digits implementation, math	1400	x14977
259B	Little Elephant and Magic Square brute force, implementation	1100	x14065
259A	Little Elephant and Chess brute force, strings	1000	x9222
258E	Little Elephant and Tree data structures, dfs and similar, trees	2400	x1137
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1293
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1802
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1454
258A	Little Elephant and Bits greedy, math	1100	x23257