Problemset - Codeforces

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Educational Codeforces Round 81 (Rated for Div. 2)
2 days
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geometry

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Problems

#	Name
1292B	Aroma's Search brute force, constructive algorithms, geometry, greedy, implementation	1800	x2933
1284E	New Year and Castle Construction combinatorics, geometry, math, sortings	2500	x606
1270E	Divide Points constructive algorithms, geometry, math	2300	x1277
1271C	Shawarma Tent brute force, geometry, greedy, implementation	1300	x5461
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x717
1248A	Integer Points geometry, math	900	x8010
1237C1	Balanced Removals (Easier) constructive algorithms, geometry, greedy	1600	x3880
1216C	White Sheet geometry, math	1500	x3613
1220G	Geolocation geometry	3200	x22
1218B	Guarding warehouses data structures, geometry	2700	x20
1199B	Water Lily geometry, math	1000	x10570
1193C	Scissors and Tape *special problem, constructive algorithms, geometry		x16
1195F	Geometers Anonymous Club data structures, geometry, math, sortings	2700	x319
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1050
1175G	Yet Another Partiton Problem data structures, divide and conquer, dp, geometry, two pointers	2700	x74
1167G	Low Budget Inception brute force, geometry	3000	x86
1158D	Winding polygonal line constructive algorithms, geometry, greedy, math	2800	x342
1163C1	Power Transmission (Easy Edition) brute force, geometry	1900	x2024
1163C2	Power Transmission (Hard Edition) data structures, geometry, implementation, math	2000	x2053
1156A	Inscribed Figures geometry	1400	x5259
1146H	Satanic Panic dp, geometry	2800	x178
1142C	U2 geometry	2800	x644
1100C	NN and the Optical Illusion binary search, geometry, math	1300	x6471
1096C	Polygon for the Angle brute force, geometry	1600	x4484
1083E	The Fair Nut and Rectangles data structures, dp, geometry	2400	x906
1032D	Barcelonian Distance geometry, implementation	1900	x1866
1044C	Optimal Polygon Perimeter dp, geometry	2200	x814
1071E	Rain Protection binary search, geometry	3500	x51
1070M	Algoland and Berland constructive algorithms, divide and conquer, geometry	3100	x38
1063C	Dwarves, Hats and Extrasensory Abilities binary search, constructive algorithms, geometry, interactive	1900	x1849
1064A	Make a triangle! brute force, geometry, math	700	x11062
1059D	Nature Reserve binary search, geometry, ternary search	2200	x1667
1030D	Vasya and Triangle geometry, number theory	1700	x4046
1030B	Vasya and Cornfield geometry	1100	x7964
1046I	Say Hello geometry	2300	x181
1045F	Shady Lady geometry, math	3500	x58
1045E	Ancient civilizations constructive algorithms, geometry	2800	x40
1047B	Cover Points geometry, math	900	x10088
1036E	Covered Points fft, geometry, number theory	2300	x912
1028C	Rectangles geometry, implementation, sortings	1600	x3233
1025F	Disjoint Triangles geometry	2700	x351
1019D	Large Triangle binary search, geometry, sortings	2700	x349
1017E	The Supersonic Rocket geometry, hashing, strings	2400	x567
1016E	Rest In The Shades binary search, geometry	2400	x619
995C	Leaving the Bar brute force, data structures, geometry, greedy, math, sortings	2200	x1083
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1038
993A	Two Squares geometry, implementation	1700	x2807
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2900	x153
989D	A Shade of Moonlight binary search, geometry, math, sortings, two pointers	2500	x364
982E	Billiard geometry, number theory	2500	x347
975E	Hag's Khashba geometry	3000	x228
975D	Ghosts geometry, math	2000	x1406
958E3	Guard Duty (hard) geometry	2800	x105
958E1	Guard Duty (easy) brute force, geometry, greedy, math	1800	x998
962G	Visible Black Areas data structures, dsu, geometry, trees	2900	x60
961D	Pair Of Lines geometry	1900	x2332
949F	Astronomy geometry, probabilities	3200	x29
935C	Fifa and Fafa geometry	1700	x3666
932F	Escape Through Leaf data structures, dp, geometry	2700	x624
933C	A Colourful Prospect geometry, graphs	2400	x365
908C	New Year and Curling brute force, geometry, implementation, math	1500	x5257
900A	Find Extra One geometry, implementation	900	x8494
886F	Symmetric Projections geometry	2700	x176
887E	Little Brother binary search, geometry, sortings	2700	x82
859B	Lazy Security Guard brute force, geometry, math	1000	x4354
853E	Lada Malina data structures, geometry	3400	x34
851B	Arpa and an exam about geometry geometry, math	1400	x3964
850A	Five Dimensional Points brute force, geometry, math	1700	x2492
852H	Bob and stages dp, geometry	3100	x52
849B	Tell Your World brute force, geometry	1600	x2754
848B	Rooter's Song constructive algorithms, data structures, geometry, implementation, sortings, two pointers	2100	x1283
842B	Gleb And Pizza geometry	1100	x7309
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x4140
815D	Karen and Cards binary search, combinatorics, data structures, geometry	2700	x290
814D	An overnight dance in discotheque dfs and similar, dp, geometry, greedy, trees	2000	x1480
794B	Cutting Carrot geometry, math	1300	x4265
799G	Cut the pie binary search, data structures, geometry	2600	x56
793C	Mice problem geometry, implementation, math, sortings	2200	x957
772B	Volatile Kite geometry	1800	x2372
792F	Mages and Monsters data structures, geometry	3100	x77
771F	Bear and Isomorphic Points geometry, two pointers	3200	x45
780H	Intranet of Buses binary search, geometry, implementation, two pointers	3000	x68
776F	Sherlock's bet to Moriarty constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation, trees	2700	x225
766B	Mahmoud and a Triangle constructive algorithms, geometry, greedy, math, number theory, sortings	1100	x12074
763B	Timofey and rectangles constructive algorithms, geometry	2200	x1937
750B	New Year and North Pole geometry, implementation	1300	x7540
749B	Parallelogram is Back brute force, constructive algorithms, geometry	1300	x6276
744D	Hongcow Draws a Circle geometry	3000	x72
717I	Cowboy Beblop at his computer geometry	3800	x137
706A	Beru-taxi brute force, geometry, implementation	1100	x10165
704E	Iron Man data structures, geometry, trees	3500	x114
703C	Chris and Road geometry, implementation	2100	x1320
698D	Limak and Shooting Points brute force, geometry	2800	x278
696F	...Dary! binary search, geometry, two pointers	3200	x55
690B2	Recover Polygon (medium) geometry	2700	x133
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2300	x993
682E	Alyona and Triangles geometry, two pointers	2600	x437
683A	The Check of the Point *special problem, geometry	1200	x554
681E	Runaway to a Shadow geometry, sortings	2900	x329
678F	Lena and Queries data structures, divide and conquer, geometry	2600	x284

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