Problemset - Codeforces

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Codeforces Round (Div. 3)
39:06:18
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Problems

#	Name
229D	Towers dp, greedy, two pointers	2100	x2100
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2104
894E	Ralph and Mushrooms dp, graphs	2100	x2137
1201D	Treasure Hunting binary search, dp, greedy, implementation	2100	x2149
1839D	Ball Sorting data structures, dp, sortings	2100	x2168
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2170
988F	Rain and Umbrellas dp	2100	x2195
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x2233
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2235
840B	Leha and another game about graph constructive algorithms, data structures, dfs and similar, dp, graphs	2100	x2241
1799D2	Hot Start Up (hard version) data structures, dp	2100	x2264
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2265
1106E	Lunar New Year and Red Envelopes data structures, dp	2100	x2314
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2327
1650G	Counting Shortcuts data structures, dfs and similar, dp, graphs, shortest paths	2100	x2330
1216F	Wi-Fi data structures, dp, greedy	2100	x2331
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2336
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2342
1202C	You Are Given a WASD-string... brute force, data structures, dp, greedy, implementation, math, strings	2100	x2351
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2371
1152D	Neko and Aki's Prank dp, greedy, trees	2100	x2372
980D	Perfect Groups dp, math, number theory	2100	x2408
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2458
1767C	Count Binary Strings data structures, dp	2100	x2496
1223E	Paint the Tree dp, sortings, trees	2100	x2515
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2537
1154F	Shovels Shop dp, greedy, sortings	2100	x2542
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2556
507E	Breaking Good dfs and similar, dp, graphs, shortest paths	2100	x2589
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2593
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2601
768E	Game of Stones bitmasks, dp, games	2100	x2630
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x2643
960F	Pathwalks data structures, dp, graphs	2100	x2667
1913D	Array Collapse data structures, divide and conquer, dp, trees	2100	x2684
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2725
1271D	Portals data structures, dp, greedy, implementation, sortings	2100	x2746
1029E	Tree with Small Distances dp, graphs, greedy	2100	x2770
771C	Bear and Tree Jumps dfs and similar, dp, trees	2100	x2788
1884D	Counting Rhyme dp, math, number theory	2100	x2789
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2805
466D	Increase Sequence combinatorics, dp	2100	x2834
1547G	How Many Paths? dfs and similar, dp, graphs, trees	2100	x2848
1077F2	Pictures with Kittens (hard version) data structures, dp	2100	x2868
1482E	Skyline Photo data structures, divide and conquer, dp	2100	x2932
1472F	New Year's Puzzle brute force, dp, graph matchings, greedy, sortings	2100	x2933
354C	Vasya and Beautiful Arrays brute force, dp, number theory	2100	x2969
1367F1	Flying Sort (Easy Version) dp, greedy, two pointers	2100	x2982
1628D1	Game on Sum (Easy Version) combinatorics, dp, games, math	2100	x3011
936B	Sleepy Game dfs and similar, dp, games, graphs	2100	x3028
1151E	Number of Components combinatorics, data structures, dp, math	2100	x3032
1354E	Graph Coloring dfs and similar, dp, graphs	2100	x3061
1271E	Common Number binary search, combinatorics, dp, math	2100	x3112
985E	Pencils and Boxes binary search, data structures, dp, greedy, two pointers	2100	x3244
1025D	Recovering BST brute force, dp, math, number theory, trees	2100	x3294
1265E	Beautiful Mirrors data structures, dp, math, probabilities	2100	x3317
1606E	Arena combinatorics, dp, math	2100	x3331
1446C	Xor Tree binary search, bitmasks, data structures, divide and conquer, dp, trees	2100	x3387
1667B	Optimal Partition data structures, dp	2100	x3465
372C	Watching Fireworks is Fun data structures, dp, math	2100	x3622
1614D1	Divan and Kostomuksha (easy version) dp, number theory	2100	x3648
734E	Anton and Tree dfs and similar, dp, trees	2100	x3732
1393D	Rarity and New Dress dfs and similar, dp, implementation, shortest paths	2100	x3767
486D	Valid Sets dfs and similar, dp, math, trees	2100	x3851
1479B2	Painting the Array II constructive algorithms, data structures, dp, greedy, implementation	2100	x3900
1366E	Two Arrays binary search, brute force, combinatorics, constructive algorithms, dp, two pointers	2100	x3956
1117D	Magic Gems dp, math, matrices	2100	x4002
1516D	Cut binary search, data structures, dp, graphs, number theory, two pointers	2100	x4085
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x4190
1409F	Subsequences of Length Two dp, strings	2100	x4265
1472G	Moving to the Capital dfs and similar, dp, graphs, shortest paths	2100	x4395
1420C2	Pokémon Army (hard version) data structures, divide and conquer, dp, greedy, implementation	2100	x4493
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4639
319C	Kalila and Dimna in the Logging Industry dp, geometry	2100	x4712
837D	Round Subset dp, math	2100	x4788
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x5121
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5123
1372D	Omkar and Circle brute force, dp, games, greedy	2100	x5285
1499D	The Number of Pairs dp, math, number theory	2100	x5446
1312E	Array Shrinking dp, greedy	2100	x5492
1433F	Zero Remainder Sum dp	2100	x5827
519E	A and B and Lecture Rooms binary search, data structures, dfs and similar, dp, trees	2100	x6173
1486D	Max Median binary search, data structures, dp	2100	x6691
1187E	Tree Painting dfs and similar, dp, trees	2100	x7413
1571F	Kotlinforces *special problem, constructive algorithms, dp	2000	x176
774J	Stepan's Series *special problem, dp	2000	x353
228C	Fractal Detector dp, hashing	2000	x441
66E	Petya and Post data structures, dp	2000	x683
386C	Diverse Substrings dp, strings, two pointers	2000	x710
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x713
435D	Special Grid brute force, dp, greedy	2000	x746
413D	2048 bitmasks, dp	2000	x749
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x759
374D	Inna and Sequence binary search, data structures, dp, trees	2000	x843
39E	What Has Dirichlet Got to Do with That? dp, games	2000	x852
119C	Education Reform dp	2000	x853
1057C	Tanya and Colored Candies *special problem, dp	2000	x864
251C	Number Transformation dp, greedy, number theory	2000	x1011
18E	Flag 2 dp	2000	x1016
18D	Seller Bob brute force, dp, greedy	2000	x1029