Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
20:07:01
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Problems

#	Name
171H	A polyline *special problem, implementation	1700	x265
100E	Lamps in a Line *special problem, math	1600	x265
1039E	Summer Oenothera Exhibition data structures	3400	x264
1031F	Familiar Operations brute force, graphs, math	2800	x264
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x264
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x263
1310E	Strange Function dp	2900	x263
135E	Weak Subsequence combinatorics	3000	x263
38H	The Great Marathon dp	2400	x263
1906K	Deck-Building Game divide and conquer, math	2500	x262
1540D	Inverse Inversions binary search, brute force, data structures	3200	x262
1205E	Expected Value Again combinatorics, strings	3100	x262
1002C2	Distinguish zero state and plus state without errors	1800	x262
886F	Symmetric Projections geometry	2900	x262
1482G	Vabank binary search, interactive	3200	x261
1002A4	Generate W state	1900	x261
394D	Physical Education and Buns brute force, implementation, math		x261
306D	Polygon constructive algorithms, geometry	2300	x260
175E	Power Defence brute force, dp, geometry, greedy	2600	x260
91D	Grocer's Problem constructive algorithms, graphs, greedy	2600	x260
1884E	Hard Design greedy, implementation, math	2800	x259
1466H	Finding satisfactory solutions combinatorics, dp, graphs, greedy, math	3300	x259
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x259
1116C1	Alternating bits oracle		x259
566B	Replicating Processes constructive algorithms, greedy	2600	x259
241F	Race brute force, implementation	2300	x259
1458F	Range Diameter Sum data structures, trees	3500	x258
1181E2	A Story of One Country (Hard) brute force, greedy, sortings	3000	x258
666D	Chain Reaction brute force, geometry	3000	x258
178D2	Magic Squares	1900	x258
72H	Reverse It! *special problem, implementation	1600	x258
1297D	Bonus Distribution *special problem, binary search, greedy, sortings		x257
1054G	New Road Network constructive algorithms, greedy, math	3300	x257
1900F	Local Deletions binary search, data structures, implementation	2800	x256
1610I	Mashtali vs AtCoder games, trees	3100	x256
1427G	One Billion Shades of Grey flows, graphs	3300	x256
1007D	Ants 2-sat, data structures, trees	3200	x256
390E	Inna and Large Sweet Matrix		x256
207B1	Military Trainings	1600	x256
1766F	MCF flows	2800	x255
256D	Liars and Serge dp	2700	x255
1275E1	Контрольная сумма *special problem		x254
774H	Repairing Of String *special problem, constructive algorithms	2200	x254
350D	Looking for Owls binary search, data structures, geometry, hashing, sortings	2400	x254
48G	Galaxy Union dp, trees, two pointers	2700	x254
1170E	Sliding Doors *special problem, binary search		x253
1016G	Appropriate Team bitmasks, math, number theory	2700	x253
960H	Santa's Gift data structures, trees	3100	x253
1864G	Magic Square combinatorics, constructive algorithms, implementation	3100	x252
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x252
1344F	Piet's Palette matrices	3200	x252
434E	Furukawa Nagisa's Tree binary search, divide and conquer, sortings, trees	3000	x252
513G3	Inversions problem dp	3100	x251
470B	Hexakosioihexekontahexaphobia *special problem	1800	x251
1832F	Zombies binary search, dp	3200	x250
1817E	Half-sum brute force, divide and conquer, greedy	3400	x250
1812I	Mountain Climber *special problem		x250
1115U1	Anti-diagonal unitary *special problem	1500	x250
97A	Domino brute force, implementation	2400	x250
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x249
571E	Geometric Progressions math	3200	x249
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x249
346E	Doodle Jump math, number theory	3000	x249
57E	Chess math, shortest paths	3000	x249
1120F	Secret Letters data structures, dp, greedy	3100	x248
62C	Inquisition geometry, implementation, sortings	2300	x247
173D	Deputies constructive algorithms, graphs, greedy, implementation	2500	x246
1767F	Two Subtrees data structures, trees	3100	x245
1239F	Swiper, no swiping! graphs, implementation	3400	x245
607E	Cross Sum binary search, geometry	3300	x245
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x245
1938L	XOR Operations	2800	x244
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x244
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x244
1109C	Sasha and a Patient Friend binary search, data structures, implementation	2800	x244
238D	Tape Programming data structures, implementation	2900	x244
188H	Stack *special problem, expression parsing, implementation	1800	x244
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x242
1819E	Roads in E City interactive, math, probabilities, trees	3200	x241
1510E	Equilibrium Point /\textbackslash/\textbackslash	2700	x241
1240F	Football graphs	3100	x241
793E	Problem of offices constructive algorithms, dfs and similar, dp, trees	2900	x241
1474F	1 2 3 4 ... dp, math, matrices	3000	x239
1065G	Fibonacci Suffix strings	2700	x239
40C	Berland Square implementation, math	2300	x239
1148H	Holy Diver data structures	3500	x238
1056G	Take Metro brute force, data structures, graphs	2900	x238
152D	Frames brute force	2600	x238
1548D2	Gregor and the Odd Cows (Hard) brute force, geometry, math, number theory	3300	x237
1197F	Coloring Game dp, games, matrices	2700	x237
1193A	Amusement Park *special problem, dp, math		x237
1147F	Zigzag Game games, interactive	3500	x237
802E	Marmots (medium) math	2200	x237
145D	Lucky Pair combinatorics, data structures, implementation	2900	x237
1616G	Just Add an Edge dfs and similar, dp, graphs	3500	x236
1572F	Stations data structures	3400	x236
1357A5	Distinguish Rz(θ) from Ry(θ)		x236
575E	Spectator Riots geometry	2800	x236
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x235
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x235