Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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dfs and similar

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Problems

#	Name
1270G	Subset with Zero Sum constructive algorithms, dfs and similar, graphs, math	2700	x2028
1266F	Almost Same Distance dfs and similar, graphs	2900	x330
1263F	Economic Difficulties data structures, dfs and similar, dp, flows, graphs, trees	2400	x832
1263D	Secret Passwords dfs and similar, dsu, graphs	1500	x13205
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x259
1253D	Harmonious Graph constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	1700	x8819
1250N	Wires dfs and similar, graphs, greedy	2000	x1542
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16220
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1465
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x6953
1239D	Catowice City 2-sat, dfs and similar, graph matchings, graphs	2400	x1862
1238F	The Maximum Subtree dfs and similar, dp, graphs, trees	2200	x1684
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	3000	x167
1220E	Tourism dfs and similar, dp, dsu, graphs, greedy, trees	2200	x2540
1218I	The Light Square 2-sat, dfs and similar, greedy	2100	x571
1218H	Function Composition dfs and similar	2900	x108
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x4933
1214H	Tiles Placement constructive algorithms, dfs and similar, trees	2800	x369
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x4927
1213F	Unstable String Sort data structures, dfs and similar, dsu, graphs, greedy, implementation, strings	2100	x2323
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x1065
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x8789
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2092
1207G	Indie Album data structures, dfs and similar, hashing, string suffix structures, strings, trees	2700	x946
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x907
1192B	Dynamic Diameter *special problem, data structures, dfs and similar, divide and conquer, trees		x993
1188A2	Add on a Tree: Revolution constructive algorithms, dfs and similar, implementation, trees	2500	x1069
1187E	Tree Painting dfs and similar, dp, trees	2100	x7395
1186F	Vus the Cossack and a Graph dfs and similar, graphs, greedy, implementation	2400	x743
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2100	x897
1182D	Complete Mirror constructive algorithms, dfs and similar, dp, hashing, implementation, trees	2400	x800
1182B	Plus from Picture dfs and similar, implementation, strings	1300	x10825
1178G	The Awesomest Vertex data structures, dfs and similar	3000	x406
1178F1	Short Colorful Strip combinatorics, dfs and similar, dp	2200	x1901
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x10404
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5124
1175E	Minimal Segment Cover data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees	2200	x3176
1172B	Nauuo and Circle combinatorics, dfs and similar, dp, trees	1900	x3715
1167C	News Distribution dfs and similar, dsu, graphs	1400	x16848
1158C	Permutation recovery constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings	2100	x1695
1156D	0-1-Tree dfs and similar, divide and conquer, dp, dsu, trees	2200	x3608
1156B	Ugly Pairs dfs and similar, greedy, implementation, sortings, strings	1800	x6125
1153D	Serval and Rooted Tree binary search, dfs and similar, dp, greedy, trees	1900	x4826
1152E	Neko and Flashback constructive algorithms, dfs and similar, graphs	2400	x932
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8799
1147D	Palindrome XOR dfs and similar, graphs	2400	x723
1146D	Frog Jumping dfs and similar, math, number theory	2100	x1060
1144F	Graph Without Long Directed Paths dfs and similar, graphs	1700	x10739
1143C	Queen dfs and similar, trees	1400	x11141
1142B	Lynyrd Skynyrd data structures, dfs and similar, dp, math, trees	2000	x2623
1141G	Privatization of Roads in Treeland binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	1900	x2182
1139C	Edgy Trees dfs and similar, dsu, graphs, math, trees	1500	x11947
1133F2	Spanning Tree with One Fixed Degree constructive algorithms, dfs and similar, dsu, graphs, greedy	1900	x3078
1132E	Knapsack dfs and similar, dp, greedy	2300	x1397
1131D	Gourmet choice dfs and similar, dp, dsu, graphs, greedy	2000	x3021
1130C	Connect brute force, dfs and similar, dsu	1400	x8300
1120D	Power Tree dfs and similar, dp, dsu, graphs, greedy, trees	2500	x1258
1118F2	Tree Cutting (Hard Version) combinatorics, dfs and similar, dp, trees	2700	x500
1118F1	Tree Cutting (Easy Version) dfs and similar, trees	1800	x5552
1111E	Tree data structures, dfs and similar, dp, graphs, trees	2500	x840
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x13875
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x3973
1103C	Johnny Solving constructive algorithms, dfs and similar, graphs, math	2700	x777
1101D	GCD Counting data structures, dfs and similar, dp, number theory, trees	2000	x4392
1100E	Andrew and Taxi binary search, dfs and similar, graphs	2200	x2285
1099F	Cookies binary search, data structures, dfs and similar, dp, games, trees	2400	x907
1098C	Construct a tree binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x865
1098A	Sum in the tree constructive algorithms, dfs and similar, greedy, trees	1600	x8352
1093D	Beautiful Graph dfs and similar, graphs	1700	x8457
1092F	Tree with Maximum Cost dfs and similar, dp, trees	1900	x7127
1092E	Minimal Diameter Forest constructive algorithms, dfs and similar, greedy, trees	2000	x1614
1089H	Harder Satisfiability 2-sat, dfs and similar, graphs	3400	x105
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x518
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2505
1065F	Up and Down the Tree dfs and similar, dp, trees	2500	x1131
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1268
1062F	Upgrading Cities dfs and similar, graphs	2900	x542
1062E	Company binary search, data structures, dfs and similar, greedy, trees	2300	x1702
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3861
1060E	Sergey and Subway dfs and similar, dp, trees	2000	x2971
1057A	Bmail Computer Network *special problem, dfs and similar, trees	900	x5743
1056D	Decorate Apple Tree constructive algorithms, dfs and similar, dp, graphs, greedy, sortings, trees	1600	x5613
1045C	Hyperspace Highways dfs and similar, graphs, trees	2300	x620
1044B	Intersecting Subtrees dfs and similar, interactive, trees	1900	x1540
1042F	Leaf Sets data structures, dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1235
1039C	Network Safety dfs and similar, dsu, graphs, math, sortings	2200	x1311
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x951
1037D	Valid BFS? dfs and similar, graphs, shortest paths, trees	1700	x13742
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2700	x361
1033E	Hidden Bipartite Graph binary search, constructive algorithms, dfs and similar, graphs, interactive	2800	x578
1033A	King Escape dfs and similar, graphs, implementation	1000	x12902
1027F	Session in BSU binary search, dfs and similar, dsu, graph matchings, graphs	2400	x1504
1027D	Mouse Hunt dfs and similar, graphs	1700	x6986
1023F	Mobile Phone Network dfs and similar, dsu, graphs, trees	2600	x857
1020B	Badge brute force, dfs and similar, graphs	1000	x20136
1016F	Road Projects dfs and similar, dp, trees	2600	x772
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x3645
1010D	Mars rover dfs and similar, graphs, implementation, trees	2000	x2338
1006E	Military Problem dfs and similar, graphs, trees	1600	x9391
1005F	Berland and the Shortest Paths brute force, dfs and similar, graphs, shortest paths	2100	x1605