Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
19:24:00
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Before contest
Codeforces Round 941 (Div. 2)
19:24:00
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Problems

#	Name
1422B	Nice Matrix greedy, implementation, math	1300	x14169
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14199
1881D	Divide and Equalize math, number theory	1300	x14222
1717C	Madoka and Formal Statement greedy	1300	x14223
1753A1	Make Nonzero Sum (easy version) constructive algorithms, dp, greedy	1300	x14250
1851D	Prefix Permutation Sums implementation, math	1300	x14303
1667A	Make it Increasing brute force, greedy, math	1300	x14324
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14338
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x14377
1157B	Long Number greedy	1300	x14380
1741D	Masha and a Beautiful Tree dfs and similar, divide and conquer, graphs, sortings, trees	1300	x14403
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14433
1736C1	Good Subarrays (Easy Version) binary search, data structures, schedules, two pointers	1300	x14458
1217A	Creating a Character binary search, math	1300	x14625
1237B	Balanced Tunnel data structures, sortings, two pointers	1300	x14635
1844C	Particles dp, greedy, implementation, math	1300	x14762
1879C	Make it Alternating combinatorics, dp, greedy	1300	x14803
1943A	MEX Game 1 games, greedy	1300	x14856
1446A	Knapsack constructive algorithms, greedy, sortings	1300	x14875
1249C1	Good Numbers (easy version) brute force, greedy, implementation	1300	x15052
1733C	Parity Shuffle Sorting constructive algorithms, sortings	1300	x15058
1260B	Obtain Two Zeroes binary search, math	1300	x15078
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15153
1326C	Permutation Partitions combinatorics, greedy, math	1300	x15209
1077C	Good Array	1300	x15233
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x15271
1443B	Saving the City dp, greedy, math, sortings	1300	x15461
1311C	Perform the Combo brute force	1300	x15572
1555B	Two Tables brute force	1300	x15595
1693A	Directional Increase greedy	1300	x15615
1931D	Divisible Pairs combinatorics, math, number theory	1300	x15621
570B	Simple Game constructive algorithms, games, greedy, implementation, math	1300	x15726
1612C	Chat Ban binary search, math	1300	x15729
1676F	Longest Strike data structures, greedy, implementation, sortings, two pointers	1300	x15743
352B	Jeff and Periods implementation, sortings	1300	x15779
862B	Mahmoud and Ehab and the bipartiteness dfs and similar, graphs, trees	1300	x15893
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x15931
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x15958
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x16030
1829F	Forever Winter dfs and similar, graphs, math	1300	x16054
1669H	Maximal AND bitmasks, greedy, math	1300	x16061
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16083
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16223
1627B	Not Sitting games, greedy, sortings	1300	x16244
1418B	Negative Prefixes greedy, sortings	1300	x16261
573A	Bear and Poker implementation, math, number theory	1300	x16270
330B	Road Construction constructive algorithms, graphs	1300	x16334
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16362
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16402
1234B2	Social Network (hard version) data structures, implementation	1300	x16438
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x16464
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x16483
251A	Points on Line binary search, combinatorics, two pointers	1300	x16545
1407B	Big Vova brute force, greedy, math, number theory	1300	x16664
1922C	Closest Cities greedy, implementation, math	1300	x16712
486B	OR in Matrix greedy, hashing, implementation	1300	x16902
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x16932
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16979
1420C1	Pokémon Army (easy version) constructive algorithms, dp, greedy	1300	x16993
1466C	Canine poetry dp, greedy, strings	1300	x17284
617B	Chocolate combinatorics	1300	x17286
1857D	Strong Vertices math, sortings, trees	1300	x17567
1560D	Make a Power of Two greedy, math, strings	1300	x17613
1698C	3SUM Closure brute force, data structures	1300	x17850
1373C	Pluses and Minuses math	1300	x17901
1433E	Two Round Dances combinatorics, math	1300	x17991
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18052
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x18052
1618D	Array and Operations dp, greedy, math	1300	x18234
1915E	Romantic Glasses data structures, greedy, math	1300	x18236
1037C	Equalize dp, greedy, strings	1300	x18280
1364B	Most socially-distanced subsequence greedy, two pointers	1300	x18377
1660C	Get an Even String dp, greedy, strings	1300	x18700
1341B	Nastya and Door greedy, implementation	1300	x18974
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19315
1476B	Inflation binary search, brute force, greedy, math	1300	x19441
1203C	Common Divisors implementation, math	1300	x19524
1366B	Shuffle math, two pointers	1300	x19545
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x19688
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x19825
1371C	A Cookie for You greedy, implementation, math	1300	x20150
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20712
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x20808
1285B	Just Eat It! dp, greedy, implementation	1300	x20908
1470A	Strange Birthday Party binary search, dp, greedy, sortings, two pointers	1300	x21176
1692F	3SUM brute force, math	1300	x21180
893C	Rumor dfs and similar, graphs, greedy	1300	x21563
508B	Anton and currency you all know greedy, math, strings	1300	x22042
1367C	Social Distance constructive algorithms, greedy, math	1300	x22573
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23393
545D	Queue greedy, implementation, sortings	1300	x23935
1360E	Polygon dp, graphs, implementation, shortest paths	1300	x24358
1352D	Alice, Bob and Candies implementation	1300	x24712
450B	Jzzhu and Sequences implementation, math	1300	x25277
1365B	Trouble Sort constructive algorithms, implementation	1300	x25981
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x26061
1335D	Anti-Sudoku constructive algorithms, implementation	1300	x26547
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x26886
276B	Little Girl and Game games, greedy	1300	x27151
600B	Queries about less or equal elements binary search, data structures, sortings, two pointers	1300	x27292