Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
26:08:35
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Problems

#	Name
1100D	Dasha and Chess constructive algorithms, games, interactive	2500	x867
1100C	NN and the Optical Illusion binary search, geometry, math	1200	x10161
1100B	Build a Contest data structures, implementation	1300	x11208
1100A	Roman and Browser implementation	1000	x10217
1099F	Cookies binary search, data structures, dfs and similar, dp, games, trees	2400	x966
1099C	Postcard constructive algorithms, implementation	1200	x9707
1099B	Squares and Segments binary search, constructive algorithms, math	1100	x11202
1099A	Snowball implementation	800	x12973
1098F	Ж-function string suffix structures, strings	3500	x232
1098E	Fedya the Potter binary search, implementation, math, number theory	3400	x241
1098D	Eels data structures	2800	x782
1098C	Construct a tree binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x1092
1098B	Nice table brute force, constructive algorithms, greedy, math	2100	x1708
1098A	Sum in the tree constructive algorithms, dfs and similar, greedy, trees	1600	x8876
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x95
1097G	Vladislav and a Great Legend combinatorics, dp, trees	3000	x795
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1276
1097E	Egor and an RPG game constructive algorithms, greedy	3400	x485
1097D	Makoto and a Blackboard dp, math, number theory, probabilities	2200	x2907
1097C	Yuhao and a Parenthesis greedy, implementation	1400	x8471
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x29723
1097A	Gennady and a Card Game brute force, implementation	800	x39435
1096G	Lucky Tickets divide and conquer, dp, fft	2400	x1525
1096F	Inversion Expectation dp, math, probabilities	2300	x1818
1096E	The Top Scorer combinatorics, dp, math, probabilities	2500	x1029
1096D	Easy Problem dp	1800	x8225
1096C	Polygon for the Angle brute force, geometry	1600	x6859
1096B	Substring Removal combinatorics, math, strings	1300	x10703
1096A	Find Divisible greedy, implementation, math	800	x18847
1095F	Make It Connected dsu, graphs, greedy	1900	x6351
1095E	Almost Regular Bracket Sequence implementation	1900	x4166
1095D	Circular Dance implementation	1600	x7623
1095C	Powers Of Two bitmasks, greedy	1400	x17146
1095B	Array Stabilization implementation	900	x22325
1095A	Repeating Cipher implementation	800	x32207
1093G	Multidimensional Queries bitmasks, data structures	2300	x1947
1093F	Vasya and Array dp	2400	x1023
1093E	Intersection of Permutations data structures	2400	x1665
1093D	Beautiful Graph dfs and similar, graphs	1700	x9464
1093C	Mishka and the Last Exam greedy	1300	x9441
1093B	Letters Rearranging constructive algorithms, greedy, sortings, strings	900	x16670
1093A	Dice Rolling math	800	x17777
1092F	Tree with Maximum Cost dfs and similar, dp, trees	1900	x8393
1092E	Minimal Diameter Forest constructive algorithms, dfs and similar, greedy, trees	2000	x1773
1092D2	Great Vova Wall (Version 2) data structures, implementation	2200	x3036
1092D1	Great Vova Wall (Version 1) greedy, implementation, math	2200	x4883
1092C	Prefixes and Suffixes strings	1700	x5964
1092B	Teams Forming sortings	800	x26746
1092A	Uniform String implementation	800	x16371
1091H	New Year and the Tricolore Recreation games	3200	x431
1091G	New Year and the Factorisation Collaboration interactive, math, number theory	3200	x210
1091F	New Year and the Mallard Expedition constructive algorithms, greedy	2600	x832
1091E	New Year and the Acquaintance Estimation binary search, data structures, graphs, greedy, implementation, math, sortings	2400	x1016
1091D	New Year and the Permutation Concatenation combinatorics, dp, math	1700	x6838
1091C	New Year and the Sphere Transmission math, number theory	1400	x10096
1091B	New Year and the Treasure Geolocation brute force, constructive algorithms, greedy, implementation	1200	x10704
1091A	New Year and the Christmas Ornament brute force, implementation, math	800	x17804
1090M	The Pleasant Walk implementation	1000	x6429
1090L	Berland University greedy, math	2000	x1316
1090K	Right Expansion Of The Mind math	2000	x1110
1090J	Two Prefixes strings	2600	x461
1090I	Minimal Product	2000	x1108
1090H	Linearization graphs	2900	x101
1090G	Combostone games, implementation	2500	x110
1090F	How to Learn You Score constructive algorithms, interactive	2600	x330
1090E	Horseback Riding flows, graphs	2300	x614
1090D	Similar Arrays constructive algorithms	1800	x2150
1090C	New Year Presents constructive algorithms, data structures	2400	x512
1090B	LaTeX Expert	1900	x1471
1090A	Company Merging greedy	1300	x4306
1089M	Minegraphed constructive algorithms, graphs	2400	x621
1089L	Lazyland	900	x4094
1089K	King Kog's Reception data structures	2400	x1137
1089J	JS Minification greedy, implementation	3200	x134
1089I	Interval-Free Permutations combinatorics	2600	x386
1089H	Harder Satisfiability 2-sat, dfs and similar, graphs	3400	x113
1089G	Guest Student math	1500	x3004
1089F	Fractions math	1900	x2015
1089E	Easy Chess constructive algorithms	1700	x2042
1089D	Distance Sum graphs	3100	x101
1089C	Cactus Search interactive	2500	x429
1089B	Bimatching graphs	3200	x237
1089A	Alice the Fan dp	2200	x1187
1088F	Ehab and a weird weight formula data structures, trees	2800	x521
1088E	Ehab and a component choosing problem dp, greedy, math, trees	2400	x1499
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2893
1088C	Ehab and a 2-operation task constructive algorithms, greedy, math	1400	x8106
1088B	Ehab and subtraction implementation, sortings	1000	x12699
1088A	Ehab and another construction problem brute force, constructive algorithms	800	x16949
1086F	Forest Fires math	3500	x246
1085G	Beautiful Matrix combinatorics, data structures, dp	2900	x527
1085F	Rock-Paper-Scissors Champion	2500	x623
1085E	Vasya and Templates greedy, implementation, strings	2300	x1069
1085D	Minimum Diameter Tree constructive algorithms, implementation, trees	1700	x5464
1085C	Connect Three implementation, math	1600	x5467
1085B	Div Times Mod math	1100	x9366
1085A	Right-Left Cipher implementation, strings	800	x12245
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x8345
1084B	Kvass and the Fair Nut greedy, implementation	1200	x7852
1084A	The Fair Nut and Elevator brute force, implementation	1000	x7959