Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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constructive algorithms

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Problems

#	Name
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x9748
1103A	Grid game constructive algorithms, implementation	1400	x9574
1266C	Diverse Matrix constructive algorithms, greedy, math, number theory	1400	x9345
1750C	Complementary XOR constructive algorithms, implementation	1400	x9222
525B	Pasha and String constructive algorithms, greedy, math, strings	1400	x9171
1761C	Set Construction constructive algorithms, dfs and similar, graphs, greedy	1400	x9136
1863D	Two-Colored Dominoes constructive algorithms, greedy	1400	x8890
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x8535
711B	Chris and Magic Square constructive algorithms, implementation	1400	x8348
357B	Flag Day constructive algorithms, implementation	1400	x8021
1088C	Ehab and a 2-operation task constructive algorithms, greedy, math	1400	x7930
544B	Sea and Islands constructive algorithms, implementation	1400	x7801
359B	Permutation constructive algorithms, dp, math	1400	x7704
479B	Towers brute force, constructive algorithms, greedy, implementation, sortings	1400	x7538
1004C	Sonya and Robots constructive algorithms, implementation	1400	x7426
675B	Restoring Painting brute force, constructive algorithms, math	1400	x7280
911C	Three Garlands brute force, constructive algorithms	1400	x6951
727C	Guess the Array constructive algorithms, interactive, math	1400	x6878
369B	Valera and Contest constructive algorithms, implementation, math	1400	x6284
808C	Tea Party constructive algorithms, greedy, sortings	1400	x5952
313C	Ilya and Matrix constructive algorithms, greedy, implementation, sortings	1400	x5515
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5184
803A	Maximal Binary Matrix constructive algorithms	1400	x4735
417C	Football constructive algorithms, graphs, implementation	1400	x4605
748C	Santa Claus and Robot constructive algorithms, math	1400	x4539
865A	Save the problem! constructive algorithms	1400	x4135
8B	Obsession with Robots constructive algorithms, graphs, implementation	1400	x4064
632B	Alice, Bob, Two Teams brute force, constructive algorithms	1400	x3884
286A	Lucky Permutation constructive algorithms, math	1400	x3102
335A	Banana binary search, constructive algorithms, greedy	1400	x2504
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2409
649B	Этажи constructive algorithms	1400	x518
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x21979
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x18979
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x17624
1372C	Omkar and Baseball constructive algorithms, math	1500	x17343
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x16703
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x16162
1426D	Non-zero Segments constructive algorithms, data structures, greedy, sortings	1500	x15447
1419D2	Sage's Birthday (hard version) binary search, brute force, constructive algorithms, greedy, sortings, two pointers	1500	x14649
1630A	And Matching bitmasks, constructive algorithms	1500	x14034
1487C	Minimum Ties brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math	1500	x13661
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x13231
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13083
1368C	Even Picture constructive algorithms	1500	x12983
1562C	Rings constructive algorithms, math	1500	x12880
1325C	Ehab and Path-etic MEXs constructive algorithms, dfs and similar, greedy, trees	1500	x12854
1283C	Friends and Gifts constructive algorithms, data structures, math	1500	x12773
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x12567
1473C	No More Inversions constructive algorithms, math	1500	x12343
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12259
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12171
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x11974
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x11856
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x11804
1873G	ABBC or BACB constructive algorithms, greedy	1500	x11562
1774B	Coloring constructive algorithms, greedy, math	1500	x11508
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x11150
441C	Valera and Tubes constructive algorithms, dfs and similar, implementation	1500	x10821
1215C	Swap Letters constructive algorithms, greedy	1500	x10790
1742F	Smaller constructive algorithms, greedy, strings	1500	x10714
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10571
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x10258
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10123
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9897
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x9744
414A	Mashmokh and Numbers constructive algorithms, number theory	1500	x9621
1611D	Weights Assignment For Tree Edges constructive algorithms, trees	1500	x9470
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9374
1439A1	Binary Table (Easy Version) constructive algorithms, implementation	1500	x9146
282C	XOR and OR constructive algorithms, implementation, math	1500	x9092
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x8907
1114B	Yet Another Array Partitioning Task constructive algorithms, greedy, sortings	1500	x8841
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x8701
1739C	Card Game combinatorics, constructive algorithms, dp, games	1500	x8680
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x8650
468A	24 Game constructive algorithms, greedy, math	1500	x7743
1740D	Knowledge Cards constructive algorithms, data structures	1500	x7664
496C	Removing Columns brute force, constructive algorithms, implementation	1500	x7553
1136C	Nastya Is Transposing Matrices constructive algorithms, sortings	1500	x7552
1209C	Paint the Digits constructive algorithms, greedy, implementation	1500	x7215
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1500	x7135
557B	Pasha and Tea constructive algorithms, implementation, math, sortings	1500	x7075
1043C	Smallest Word constructive algorithms, greedy, implementation	1500	x6773
1167D	Bicolored RBS constructive algorithms, greedy	1500	x6756
1158A	The Party and Sweets binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers	1500	x6723
771B	Bear and Different Names constructive algorithms, greedy	1500	x6625
1119C	Ramesses and Corner Inversion constructive algorithms, greedy, implementation, math	1500	x6556
496B	Secret Combination brute force, constructive algorithms, implementation	1500	x5797
402C	Searching for Graph brute force, constructive algorithms, graphs	1500	x5682
959C	Mahmoud and Ehab and the wrong algorithm constructive algorithms, trees	1500	x5670
940C	Phone Numbers constructive algorithms, implementation, strings	1500	x5600
1737C	Ela and Crickets constructive algorithms, games, implementation, math	1500	x5547
501C	Misha and Forest constructive algorithms, data structures, greedy, sortings, trees	1500	x5506
901A	Hashing Trees constructive algorithms, trees	1500	x5005
710C	Magic Odd Square constructive algorithms, math	1500	x4980
746D	Green and Black Tea constructive algorithms, greedy, math	1500	x4974
329A	Purification constructive algorithms, greedy	1500	x4585
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4520
1081B	Farewell Party constructive algorithms, implementation	1500	x4384