Problemset - Codeforces

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Codeforces Round 1112 (Div. 1)
07:31:20
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Before contest
Codeforces Round 1112 (Div. 2)
07:31:20
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Problems

#	Name
2247F	Paths on a Grid data structures, dp, hashing		x335
2247E	Build a Tree constructive algorithms, trees, two pointers		x833
2247D2	XOR Sorting (Hard Version) bitmasks, data structures, greedy		x1883
2247D1	XOR Sorting (Easy Version) bitmasks, greedy		x5413
2247C	Inversion of a Subsequence greedy, math		x10629
2247B	Yet Another Constructive constructive algorithms		x13234
2247A	Zero Sum constructive algorithms, dp, number theory		x17302
2246F	Whoname and Unsorted Array constructive algorithms		x198
2246E	lce4113 and Security Game bitmasks, interactive, interactive, math, probabilities		x529
2246D	diss_quack and Array Game bitmasks, brute force, games, greedy		x2747
2246C	0mar and Alternating Sums combinatorics, dp, math		x7830
2246B	ezraft and Array constructive algorithms, number theory		x15120
2246A	farmpiggie and Subset Sum constructive algorithms		x17504
2245H	Connect Connect See brute force, brute force, data structures		x47
2245G	NPC Challenge divide and conquer, interactive		x99
2245F	Familiar? brute force, combinatorics, dp		x237
2245E	Tom and Jerry dfs and similar, dsu, games, trees		x885
2245D2	Construct an Array (Hard Version) 2-sat, constructive algorithms, dfs and similar, graphs, implementation		x1655
2245D1	Construct an Array (Easy Version) dfs and similar, implementation, sortings		x3154
2245C	MEXOR bitmasks, constructive algorithms, math		x5931
2245B	Delete and Concatenate greedy		x9230
2245A	Who Watches the Watchpig? greedy		x12100
2244G	Yura and Deadlines data structures, dp		x2136
2244F	Anya Loves Trees! dfs and similar, dp, greedy, trees, trees		x3470
2244E	Masha and the Garland data structures, dp, greedy, implementation, math, number theory, strings		x7494
2244D	Yaroslav and Productivity constructive algorithms, dp, greedy, math, number theory		x11278
2244C	Stepan and Permutation constructive algorithms, dfs and similar, dsu, greedy, math, number theory, sortings, sortings, sortings		x15422
2244B	Nikita and Books greedy, greedy, math, math, sortings, sortings		x21192
2244A	Iskander and Drawings dp, games, greedy, strings		x26250
2242F	Summer Vacation data structures, data structures, data structures, dp, dp, probabilities, trees	2700	x380
2242E	Product of Closures bitmasks, brute force, constructive algorithms, greedy, implementation, math, number theory	2200	x1346
2242D	Two Digit Strings dp, strings	1600	x6472
2242C	Unstable Elements brute force, brute force, data structures, implementation, sortings, two pointers, two pointers	1300	x10402
2242B	Predominant Frequency Division data structures, greedy, implementation, math	1000	x15937
2242A	Bigrams sortings, strings	800	x22504
2241G	Summmon binary search, data structures, greedy, implementation, math, number theory	2400	x827
2241F	A Bit Odd data structures, games, greedy, math	1700	x4416
2241E	Fair and Square combinatorics, dp, graphs, math, number theory, trees	1600	x5714
2241D	An Alternative Way dp, greedy, math	1100	x15288
2241C	RemovevomeR greedy	1000	x20093
2241B	Good times Good times constructive algorithms, dfs and similar, math	1100	x19548
2241A	Divide and Conquer greedy, math, number theory	800	x31628
2240B	AI Finds Nothing Here combinatorics, math	1100	x10465
2240A	Another Popcount Problem greedy	800	x15993
2239F	Colorful Works dp, fft, games, implementation	3500	x189
2239E	The end of this world, data structures, divide and conquer, dsu, graphs	3300	x152
2239D	Hunting the Beast combinatorics, dp, graphs, math	2500	x597
2239C	Revival binary search, data structures, math, two pointers	2200	x1236
2239B	Decidophobia greedy, math, sortings, two pointers	1500	x6543
2239A	Nim Game Is XOR Game constructive algorithms, games, greedy, math	1300	x8637
2238F	Infinite Work combinatorics, graphs, greedy, math, trees	2600	x402
2238E	Cake Trial dp, greedy	2000	x1744
2238D	Storming Arasaka greedy, math, number theory	1500	x7154
2238C	Village Guilds dfs and similar, dp, trees	1400	x8544
2238B	Crimson Triples dp, math, number theory	900	x15129
2238A	Another Puzzle from Papyrus greedy, math, sortings	800	x18735
2237I2	DBFS Order (Hard Version) dp, trees	3500	x89
2237I1	DBFS Order (Easy Version) dp, trees	3500	x63
2237H	Slime and Queries data structures, greedy, trees	3500	x123
2237G	Send GCDs communication, constructive algorithms, interactive, math, number theory	2900	x416
2237F	Paint the Array data structures, dp, greedy	2400	x903
2237E	Permutation Commutation data structures, graphs, greedy	2000	x1985
2237D	Fullmetal Bitchemist constructive algorithms, greedy, math	1500	x6139
2237C	Duck Surplus binary search, greedy	1000	x15183
2237B	Annoying the Ghost brute force, greedy	1000	x14476
2237A	Destroying Towers games, greedy, schedules	800	x21188
2236G	Criterion in Burlandia binary search, bitmasks, brute force, brute force, data structures, data structures, dfs and similar, divide and conquer, implementation, trees, two pointers	2600	x379
2236F2	Elections in Saransk (hard version) combinatorics, dp, dp, dp, math, number theory	2200	x947
2236F1	Elections in Saransk (easy version) number theory	1700	x4825
2236E	Friendly Gifts brute force, dp	1700	x6218
2236D	Brand New Tatar TV Show binary search, constructive algorithms, dp, games, games, math	1300	x12396
2236C	Omsk Programmers brute force, greedy, greedy, math, math	1000	x20573
2236B	Tatar TV Show greedy, math, strings	800	x27822
2236A	Games on the Train greedy, math	800	x33749
2234G	Stripe, Token and Two Players data structures, dp, games	2700	x359
2234F	Vessels, Heights and Two Versions (Hard Version) data structures, dfs and similar, dsu, greedy, implementation, two pointers	1900	x2261
2234E	Vlad, Misha and Two Arrays brute force, combinatorics, dfs and similar, divide and conquer, math	2100	x1937
2234D	XOR, Expression and Two Binary Numbers bitmasks, divide and conquer, dp, math, number theory	1500	x8568
2234C	Vessels, Heights and Two Versions (Easy Version) dfs and similar, dsu, greedy, implementation, two pointers	1200	x11967
2234B	Palindrome, Twelve and Two Terms brute force, constructive algorithms, math	800	x21756
2234A	Euclid, Sequence and Two Numbers math, number theory, sortings	800	x23784
2233F	Shortest GCD Paths dp, graphs, math, number theory, shortest paths, shortest paths	2800	x382
2233E2	Permutation Transmission (Difficult Version) bitmasks, combinatorics, sortings	2300	x1128
2233E1	Permutation Transmission (Easy Version) bitmasks, combinatorics, sortings	2200	x1154
2233D	Goods on the Shelf brute force, data structures, implementation, two pointers	1900	x3349
2233C	Cost of a Bracket Sequence brute force, dp, greedy	1400	x9225
2233B	Different Distances constructive algorithms	900	x17566
2233A	AI Project Development brute force, math	800	x22407
2232F	The Cake Is a Lie greedy, math, number theory, number theory	3000	x297
2232E	Snaking Arrangement combinatorics, combinatorics, combinatorics, constructive algorithms	2600	x584
2232D	Magical Tiered Cake constructive algorithms, constructive algorithms, dfs and similar, dp, greedy	2000	x2670
2232C2	Seating Arrangement (Hard Version) binary search, binary search, binary search, greedy, greedy, greedy, math, two pointers	1500	x8513
2232C1	Seating Arrangement (Easy Version) binary search, binary search, dp, greedy, greedy, two pointers, two pointers	1300	x11883
2232B	Cake Leveling binary search, greedy, math	900	x20496
2232A	Convergence greedy, sortings, sortings, sortings	800	x23008
2231F	Quadratic Jumps brute force, constructive algorithms, greedy, math, number theory	2600	x786
2231E	Graph Cutting dfs and similar, dp, math, trees	2300	x1139
2231D	Maximum Prefix Sums constructive algorithms, greedy, implementation, two pointers	1900	x3712
2231C	Chipmunk Theo and Equality implementation, sortings	1400	x11740
2231B	Another Sorting Problem constructive algorithms	1100	x17848

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