Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
43:52:55
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Problems

#	Name
1199A	City Day implementation	1000	x15040
1198F	GCD Groups 2 greedy, number theory, probabilities	2900	x909
1198E	Rectangle Painting 2 flows, graph matchings, graphs	2500	x1189
1198D	Rectangle Painting 1 dp	2300	x3353
1198C	Matching vs Independent Set constructive algorithms, graphs, greedy, sortings	2000	x3612
1198B	Welfare State binary search, brute force, data structures, sortings	1600	x9530
1198A	MP3 sortings, two pointers	1600	x9072
1197F	Coloring Game dp, games, matrices	2700	x262
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x1695
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5449
1197C	Array Splitting greedy, sortings	1400	x14007
1197B	Pillars greedy, implementation	1000	x13934
1197A	DIY Wooden Ladder greedy, math, sortings	900	x13607
1196F	K-th Path brute force, constructive algorithms, shortest paths, sortings	2200	x2717
1196E	Connected Component on a Chessboard constructive algorithms, implementation	1800	x3759
1196D2	RGB Substring (hard version) data structures, dp, implementation, two pointers	1600	x9813
1196D1	RGB Substring (easy version) implementation	1500	x10635
1196C	Robot Breakout implementation	1500	x9404
1196B	Odd Sum Segments constructive algorithms, math	1200	x16785
1196A	Three Piles of Candies brute force, constructive algorithms, math	800	x27920
1195F	Geometers Anonymous Club data structures, geometry, math, sortings	2500	x907
1195E	OpenStreetMap data structures, two pointers	2100	x3204
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4690
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7928
1195C	Basketball Exercise dp	1400	x26832
1195B	Sport Mafia binary search, brute force, math	1000	x20107
1195A	Drinks Choosing greedy, math	1000	x13241
1194G	Another Meme Problem dp	2700	x265
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2400	x1005
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1944
1194D	1-2-K Game games, math	1700	x6629
1194C	From S To T implementation, strings	1300	x13307
1194B	Yet Another Crosses Problem implementation	1300	x10357
1194A	Remove a Progression math	800	x16415
1193C	Scissors and Tape *special problem, constructive algorithms, geometry		x41
1193B	Magic Tree *special problem, data structures, dp, trees		x444
1193A	Amusement Park *special problem, dp, math		x283
1192C	Cubeword *special problem, brute force, dp, meet-in-the-middle		x337
1192B	Dynamic Diameter *special problem, data structures, dfs and similar, divide and conquer, trees		x1252
1192A	Building Skyscrapers *special problem		x62
1191B	Tokitsukaze and Mahjong brute force, implementation	1200	x9651
1191A	Tokitsukaze and Enhancement brute force	800	x18259
1190F	Tokitsukaze and Powers number theory, probabilities	3400	x93
1190E	Tokitsukaze and Explosion binary search, greedy	3100	x227
1190D	Tokitsukaze and Strange Rectangle data structures, divide and conquer, sortings, two pointers	2000	x2314
1190C	Tokitsukaze and Duel brute force, games, greedy	2300	x2036
1190B	Tokitsukaze, CSL and Stone Game games	1800	x6503
1190A	Tokitsukaze and Discard Items implementation, two pointers	1400	x9410
1189C	Candies! data structures, dp, implementation, math	1400	x10644
1189B	Number Circle greedy, math, sortings	1100	x14389
1189A	Keanu Reeves strings	800	x15376
1188E	Problem from Red Panda combinatorics	3300	x246
1188D	Make Equal dp	3100	x733
1188C	Array Beauty dp	2500	x1814
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4613
1188A2	Add on a Tree: Revolution constructive algorithms, dfs and similar, implementation, trees	2500	x1248
1188A1	Add on a Tree trees	1600	x8467
1187G	Gang Up flows, graphs	2500	x581
1187F	Expected Square Beauty dp, math, probabilities	2500	x895
1187E	Tree Painting dfs and similar, dp, trees	2100	x8639
1187D	Subarray Sorting data structures, sortings	2400	x2673
1187C	Vasya And Array constructive algorithms, greedy, implementation	1800	x6406
1187B	Letters Shop binary search, implementation, strings	1300	x12319
1187A	Stickers and Toys math	900	x14955
1186F	Vus the Cossack and a Graph dfs and similar, graphs, greedy, implementation	2400	x796
1186E	Vus the Cossack and a Field divide and conquer, implementation, math	2500	x635
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x9005
1186C	Vus the Cossack and Strings implementation, math	1800	x6154
1186A	Vus the Cossack and a Contest implementation	800	x38214
1185G2	Playlist for Polycarp (hard version) combinatorics, dp	2600	x774
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2901
1185F	Two Pizzas bitmasks, brute force	2100	x2062
1185E	Polycarp and Snakes brute force, implementation	2000	x2671
1185D	Extra Element implementation, math	1700	x6759
1185C2	Exam in BerSU (hard version) brute force, data structures, greedy, math	1700	x7503
1185C1	Exam in BerSU (easy version) greedy, sortings	1200	x11468
1185B	Email from Polycarp implementation, strings	1200	x13502
1185A	Ropewalkers math	800	x14968
1184E3	Daleks' Invasion (hard) data structures, dsu, graphs, trees	2400	x586
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2100	x957
1184E1	Daleks' Invasion (easy) graphs, trees	1900	x1653
1184D2	Parallel Universes (Hard) math, matrices	3100	x108
1184D1	Parallel Universes (Easy) implementation	1600	x2552
1184C3	Heidi and the Turing Test (Hard)	3200	x41
1184C2	Heidi and the Turing Test (Medium) data structures	2200	x633
1184C1	Heidi and the Turing Test (Easy) implementation	1600	x2304
1184B3	The Doctor Meets Vader (Hard) flows, shortest paths	2700	x174
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2200	x601
1184B1	The Doctor Meets Vader (Easy) binary search, sortings	1400	x5456
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x140
1184A2	Heidi Learns Hashing (Medium) brute force, number theory	2100	x1002
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x6032
1183H	Subsequences (hard version) dp, strings	1900	x3219
1183G	Candy Box (hard version) greedy, implementation, sortings	2000	x2390
1183F	Topforces Strikes Back brute force, math, sortings	2100	x2051
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x4916
1183D	Candy Box (easy version) greedy, sortings	1400	x14822
1183C	Computer Game binary search, math	1400	x14132
1183B	Equalize Prices math	900	x18636
1183A	Nearest Interesting Number implementation	800	x25213