Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
23:47:51
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Problems

#	Name
1787A	Exponential Equation constructive algorithms, math	800	x18798
1915E	Romantic Glasses data structures, greedy, math	1300	x18844
1244A	Pens and Pencils math	800	x18892
1371B	Magical Calendar math	1200	x19029
1582B	Luntik and Subsequences combinatorics, math	900	x19057
1426C	Increase and Copy binary search, constructive algorithms, math	1100	x19060
327B	Hungry Sequence math	1200	x19082
1369C	RationalLee greedy, math, sortings, two pointers	1400	x19103
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x19106
1291A	Even But Not Even greedy, math, strings	900	x19111
1809B	Points on Plane binary search, greedy, math	1000	x19123
1471B	Strange List brute force, greedy, implementation, math	1100	x19147
1332A	Exercising Walk greedy, implementation, math	1100	x19155
1195B	Sport Mafia binary search, brute force, math	1000	x19187
1717A	Madoka and Strange Thoughts math, number theory	800	x19190
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19213
1594B	Special Numbers bitmasks, math	1100	x19218
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x19235
1455C	Ping-pong constructive algorithms, games, math	1100	x19274
1656A	Good Pairs math, sortings	800	x19306
1733B	Rule of League constructive algorithms, math	900	x19339
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19344
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19363
1877A	Goals of Victory math	800	x19399
1760E	Binary Inversions data structures, greedy, math	1100	x19415
1821A	Matching combinatorics, math	800	x19419
1920B	Summation Game games, greedy, math, sortings	1100	x19458
1440A	Buy the String implementation, math	800	x19521
1842A	Tenzing and Tsondu games, math	800	x19530
1476B	Inflation binary search, brute force, greedy, math	1300	x19533
515A	Drazil and Date math	1000	x19600
1047A	Little C Loves 3 I math	800	x19605
1593D1	All are Same math, number theory	1100	x19647
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x19654
1708B	Difference of GCDs constructive algorithms, math	1100	x19662
1973A	Chess For Three brute force, dp, implementation, math	900	x19673
1633C	Kill the Monster brute force, math	1100	x19679
1366B	Shuffle math, two pointers	1300	x19718
1257B	Magic Stick math	1000	x19730
1895B	Points and Minimum Distance greedy, math, sortings	800	x19739
1118A	Water Buying math	800	x19743
1620B	Triangles on a Rectangle geometry, greedy, math	1000	x19772
1811B	Conveyor Belts implementation, math	1000	x19798
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x19811
1203C	Common Divisors implementation, math	1300	x19824
1487B	Cat Cycle math, number theory	1200	x19828
1199B	Water Lily geometry, math	1000	x19828
1794B	Not Dividing constructive algorithms, greedy, math	900	x19830
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x19842
1681B	Card Trick implementation, math	800	x19865
1623A	Robot Cleaner brute force, implementation, math	800	x19910
1735A	Working Week constructive algorithms, greedy, math	800	x19932
835A	Key races math	800	x19964
513A	Game constructive algorithms, math	800	x19976
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x20031
1257A	Two Rival Students greedy, math	800	x20049
1272A	Three Friends brute force, greedy, math, sortings	900	x20076
1726A	Mainak and Array greedy, math	900	x20087
166E	Tetrahedron dp, math, matrices	1500	x20099
1407A	Ahahahahahahahaha constructive algorithms, math	1100	x20109
1475C	Ball in Berland combinatorics, graphs, math	1400	x20111
1598C	Delete Two Elements data structures, dp, implementation, math, two pointers	1200	x20146
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20155
1204A	BowWow and the Timetable math	1000	x20155
1482A	Prison Break math	800	x20157
1520E	Arranging The Sheep greedy, math	1400	x20161
1945B	Fireworks math, number theory	900	x20175
1392A	Omkar and Password greedy, math	800	x20211
1221C	Perfect Team binary search, math	1200	x20218
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20233
1371C	A Cookie for You greedy, implementation, math	1300	x20240
1249B1	Books Exchange (easy version) dsu, math	1000	x20243
1436B	Prime Square constructive algorithms, math	900	x20254
514B	Han Solo and Lazer Gun brute force, data structures, geometry, implementation, math	1400	x20260
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x20316
1792B	Stand-up Comedian greedy, math	1200	x20350
1529B	Sifid and Strange Subsequences greedy, math, sortings	1100	x20370
1605A	A.M. Deviation math, number theory	800	x20373
832A	Sasha and Sticks games, math	800	x20414
1744D	Divisibility by 2^n greedy, math, sortings	1200	x20439
1638B	Odd Swap Sort data structures, math, sortings	1100	x20446
1430A	Number of Apartments brute force, constructive algorithms, math	900	x20499
1615A	Closing The Gap greedy, math	800	x20542
1622B	Berland Music data structures, greedy, math, sortings	1000	x20587
913A	Modular Exponentiation implementation, math	900	x20643
1422A	Fence geometry, math	800	x20660
1684B	Z mod X = C constructive algorithms, math	800	x20663
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20664
746A	Compote implementation, math	800	x20699
1300A	Non-zero implementation, math	800	x20712
630C	Lucky Numbers combinatorics, math	1100	x20724
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x20751
1350B	Orac and Models dp, math, number theory	1400	x20772
1530A	Binary Decimal greedy, math	800	x20795
1720B	Interesting Sum brute force, data structures, greedy, math, sortings	800	x20797
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20827
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20847
1293B	JOE is on TV! combinatorics, greedy, math	1000	x20852
1828B	Permutation Swap math, number theory	900	x20945
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x20961