Problemset - Codeforces

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Codeforces Round 947 (Div. 1 + Div. 2)
08:24:44
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Problems

#	Name
1619F	Let's Play the Hat? brute force, constructive algorithms, greedy, math	2000	x2024
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8732
1619B	Squares and Cubes implementation, math	800	x30126
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4052
1618E	Singers' Tour constructive algorithms, math	1700	x6988
1618D	Array and Operations dp, greedy, math	1300	x18356
1618C	Paint the Array math	1100	x21655
1618A	Polycarp and Sums of Subsequences math, sortings	800	x31666
1617E	Christmas Chocolates dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees	2700	x836
1617D2	Too Many Impostors (hard version) constructive algorithms, implementation, interactive, math	2400	x1710
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14623
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22512
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x801
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x584
1616D	Keep the Average High dp, greedy, math	2000	x4722
1616C	Representative Edges brute force, geometry, implementation, math	1500	x11997
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x761
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1407
1615C	Menorah brute force, graphs, greedy, math	1600	x8082
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15273
1615A	Closing The Gap greedy, math	800	x20532
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9946
1613D	MEX Sequences dp, math	1900	x4446
1613A	Long Comparison implementation, math	900	x24019
1612D	X-Magic Pair math, number theory	1600	x8858
1612C	Chat Ban binary search, math	1300	x15938
1611B	Team Composition: Programmers and Mathematicians binary search, constructive algorithms, math	800	x28628
1611A	Make Even constructive algorithms, math	800	x30755
1610E	AmShZ and G.O.A.T. binary search, brute force, greedy, implementation, math	2300	x1630
1610D	Not Quite Lee combinatorics, dp, math, number theory	2000	x2590
1610A	Anti Light's Cell Guessing math	900	x15818
1609G	A Stroll Around the Matrix data structures, greedy, math	3000	x363
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16716
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1352
1608A	Find Array constructive algorithms, math	800	x18743
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16437
1607B	Odd Grasshopper math	900	x24733
1606E	Arena combinatorics, dp, math	2100	x3358
1606B	Update Files greedy, implementation, math	1100	x18288
1605E	Array Equalizer binary search, greedy, implementation, math, number theory, sortings, two pointers	2400	x998
1605A	A.M. Deviation math, number theory	800	x20365
1603F	October 18, 2017 combinatorics, dp, implementation, math	2700	x268
1603E	A Perfect Problem combinatorics, dp, math	3200	x403
1603C	Extreme Extension dp, greedy, math, number theory	2300	x1983
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13107
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16216
1601F	Two Sorts binary search, dfs and similar, math, meet-in-the-middle	3400	x167
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13357
1600F	Party Organization brute force, math, probabilities	2300	x434
1599H	Hidden Fortress interactive, math	2100	x1013
1599G	Shortest path brute force, geometry, math, shortest paths	2700	x357
1599C	Bubble Strike combinatorics, math, probabilities, ternary search	2000	x1562
1598G	The Sum of Good Numbers hashing, math, string suffix structures, strings	3200	x325
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x2244
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8426
1598C	Delete Two Elements data structures, dp, implementation, math, two pointers	1200	x20129
1594F	Ideal Farm constructive algorithms, math	2400	x1267
1594E2	Rubik's Cube Coloring (hard version) brute force, dp, implementation, math, trees	2300	x1448
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x10893
1594C	Make Them Equal brute force, greedy, math, strings	1200	x18063
1594B	Special Numbers bitmasks, math	1100	x18994
1594A	Consecutive Sum Riddle math	800	x23908
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2361
1593D2	Half of Same brute force, math, number theory	1900	x4809
1593D1	All are Same math, number theory	1100	x19627
1593B	Make it Divisible by 25 dfs and similar, dp, greedy, math, math	900	x25371
1593A	Elections math	800	x35668
1592E	Bored Bakry bitmasks, greedy, math, two pointers	2400	x1548
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x2167
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x15621
1592A	Gamer Hemose binary search, greedy, math, sortings	800	x21663
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x158
1585F	Non-equal Neighbours combinatorics, dp, math	2400	x1153
1585D	Yet Another Sorting Problem data structures, math	1900	x3640
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x3563
1584C	Two Arrays greedy, math, sortings	900	x16016
1584B	Coloring Rectangles greedy, math	1000	x13118
1584A	Mathematical Addition math	800	x14650
1583G	Omkar and Time Travel data structures, math	3000	x402
1583A	Windblume Ode math, number theory	800	x13563
1582E	Pchelyonok and Segments binary search, data structures, dp, greedy, math	2000	x3600
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10166
1582B	Luntik and Subsequences combinatorics, math	900	x19011
1582A	Luntik and Concerts math	800	x18289
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x11067
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13273
1580F	Problems for Codeforces combinatorics, fft, math	3300	x130
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4580
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x20949
1579A	Casimir's String Solitaire math, strings	800	x37911
1578G	Game of Chance math, probabilities	3500	x34
1578E	Easy Scheduling implementation, math	1200	x3735
1575K	Knitting Batik implementation, math	2200	x622
1575G	GCD Festival math, number theory	2200	x642
1575F	Finding Expected Value math	2900	x109
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x874
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17066
1573B	Swaps greedy, math, sortings	1400	x14188
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x322
1571B	Epic Novel *special problem, math	1300	x685