Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
1032D	Barcelonian Distance geometry, implementation	1900	x2812
1032C	Playing Piano constructive algorithms, dp	1700	x3964
1031D	Minimum path greedy	1900	x2803
1031C	Cram Time greedy	1600	x5321
1031B	Curiosity Has No Limits	1500	x3909
1030D	Vasya and Triangle geometry, number theory	1800	x5941
1030C	Vasya and Golden Ticket implementation	1300	x9436
1029D	Concatenated Multiples implementation, math	1900	x3872
1029C	Maximal Intersection greedy, math, sortings	1600	x7546
1029A	Many Equal Substrings implementation, strings	1300	x12306
1028C	Rectangles geometry, implementation, sortings	1600	x4581
1027D	Mouse Hunt dfs and similar, graphs	1700	x7446
1027C	Minimum Value Rectangle greedy	1600	x6842
1025C	Plasticine zebra constructive algorithms, implementation	1600	x6125
1025B	Weakened Common Divisor brute force, greedy, number theory	1600	x7883
1023D	Array Restoration constructive algorithms, data structures	1700	x4030
1019A	Elections brute force, greedy	1700	x4635
1017D	The Wu bitmasks, brute force, data structures	1900	x3496
1017C	The Phone Number constructive algorithms, greedy	1600	x6008
1016D	Vasya And The Matrix constructive algorithms, flows, math	1800	x4693
1016C	Vasya And The Mushrooms dp, implementation	1800	x3708
1016B	Segment Occurrences brute force, implementation	1300	x9459
1015E2	Stars Drawing (Hard Edition) binary search, dp, greedy	1900	x3599
1015E1	Stars Drawing (Easy Edition) brute force, dp, greedy	1700	x5775
1015D	Walking Between Houses constructive algorithms, greedy	1600	x8199
1012C	Hills dp	1900	x3488
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x3951
1012A	Photo of The Sky brute force, implementation, math, sortings	1500	x6426
1010C	Border number theory	1800	x4845
1010B	Rocket binary search, interactive	1800	x5188
1010A	Fly binary search, math	1500	x8060
1009D	Relatively Prime Graph brute force, constructive algorithms, graphs, greedy, math	1700	x6240
1009C	Annoying Present greedy, math	1700	x5233
1009B	Minimum Ternary String greedy, implementation	1400	x10097
1007A	Reorder the Array combinatorics, data structures, math, sortings, two pointers	1300	x12138
1006E	Military Problem dfs and similar, graphs, trees	1600	x9864
1006D	Two Strings Swaps implementation	1700	x5987
1005E1	Median on Segments (Permutations Edition) sortings	1800	x3894
1005D	Polycarp and Div 3 dp, greedy, number theory	1500	x10153
1005C	Summarize to the Power of Two brute force, greedy, implementation	1300	x11672
1004C	Sonya and Robots constructive algorithms, implementation	1400	x7531
1004B	Sonya and Exhibition constructive algorithms, greedy, implementation, math	1300	x9500
1003D	Coins and Queries greedy	1600	x7757
1003C	Intense Heat brute force, implementation, math	1300	x10582
1003B	Binary String Constructing constructive algorithms	1300	x11329
1002E2	Another array reconstruction algorithm	1900	x203
1002E1	Bernstein-Vazirani algorithm	1500	x322
1002D3	Oracle for majority function	1600	x333
1002D2	Oracle for f(x) = b * x + (1 - b) * (1 - x) mod 2	1300	x378
1002C2	Distinguish zero state and plus state without errors	1800	x267
1002C1	Distinguish zero state and plus state with minimum error	1700	x302
1002B4	Distinguish four 2-qubit states - 2	1700	x309
1002B3	Distinguish four 2-qubit states	1600	x411
1002B2	Distinguish GHZ state and W state	1600	x446
1002B1	Distinguish zero state and W state	1300	x477
1002A4	Generate W state	1900	x267
1002A3	Generate superposition of two basis states	1500	x476
1002A2	Generate superposition of zero state and a basis state	1300	x558
1001I	Deutsch-Jozsa algorithm *special problem	1700	x401
1001G	Oracle for f(x) = k-th element of x *special problem	1400	x538
1001F	Distinguish multi-qubit basis states *special problem	1300	x538
1001E	Distinguish Bell states *special problem	1600	x558
1001D	Distinguish plus state and minus state *special problem	1400	x682
1001C	Generate GHZ state *special problem	1400	x654
1001B	Generate Bell state *special problem	1400	x711
1000D	Yet Another Problem On a Subsequence combinatorics, dp	1900	x4209
1000C	Covered Points Count data structures, implementation, sortings	1700	x6760
1000B	Light It Up greedy	1500	x5798
999D	Equalize the Remainders data structures, greedy, implementation	1900	x4359
997A	Convert to Ones brute force, greedy, implementation, math	1500	x8305
996B	World Cup binary search, math	1300	x9035
995B	Suit and Tie greedy, implementation, math	1400	x7092
994B	Knights of a Polygonal Table greedy, implementation, sortings	1400	x5644
993B	Open Communication bitmasks, brute force	1900	x1952
993A	Two Squares geometry, implementation	1600	x4141
992C	Nastya and a Wardrobe math	1600	x4555
992B	Nastya Studies Informatics math, number theory	1600	x6256
991E	Bus Number brute force, combinatorics, math	1800	x3492
991D	Bishwock dp, greedy	1500	x7150
991C	Candies binary search, implementation	1500	x10426
990D	Graph And Its Complement constructive algorithms, graphs, implementation	1700	x3832
990C	Bracket Sequences Concatenation Problem implementation	1500	x5894
989C	A Mist of Florescence constructive algorithms, graphs	1800	x3797
988D	Points and Powers of Two brute force, math	1800	x7275
988C	Equal Sums implementation, sortings	1400	x10200
987C	Three displays brute force, dp, implementation	1400	x13513
986B	Petr and Permutations combinatorics, math	1800	x4653
986A	Fair graphs, greedy, number theory, shortest paths	1600	x6917
985C	Liebig's Barrels greedy	1500	x5764
983B	XOR-pyramid dp	1800	x5513
983A	Finite or not? implementation, math	1700	x4546
982D	Shark brute force, data structures, dsu, trees	1900	x2297
982C	Cut 'em all! dfs and similar, dp, graphs, greedy, trees	1500	x11501
982B	Bus of Characters data structures, greedy, implementation	1300	x8286
981D	Bookshelves bitmasks, dp, greedy	1900	x3242
981C	Useful Decomposition implementation, trees	1400	x5406
980C	Posterized games, greedy	1700	x3786
980B	Marlin constructive algorithms	1600	x4688
979C	Kuro and Walking Route dfs and similar, trees	1600	x6260
979B	Treasure Hunt greedy	1800	x4415