Problemset - Codeforces

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Codeforces Round 940 (Div. 2)
5 days

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Problems

#	Name
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x3817
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x5974
1506G	Maximize the Remaining String brute force, data structures, dp, greedy, strings	2000	x4081
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x3089
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x12547
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x20603
1506C	Double-ended Strings brute force, implementation, strings	1000	x23112
1506B	Partial Replacement greedy, implementation	1100	x19853
1506A	Strange Table math	800	x30044
1505I	Mysterious language again, seriously? *special problem	2200	x536
1505H	L BREAK into program *special problem	2500	x480
1505G	Encoded message *special problem, implementation	2600	x290
1505F	Math *special problem, math	2200	x1469
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1716
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x737
1505C	Fibonacci Words *special problem, implementation	1400	x6279
1505B	DMCA *special problem, implementation, number theory	1600	x5982
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x13942
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x17133
1504A	Déjà Vu constructive algorithms, strings	800	x21355
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x125
1503E	2-Coloring combinatorics, dp, math	3100	x585
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x963
1503C	Travelling Salesman Problem binary search, data structures, dp, greedy, shortest paths, sortings, two pointers	2200	x3186
1503B	3-Coloring constructive algorithms, games, interactive	1700	x6824
1503A	Balance the Bits constructive algorithms, greedy	1600	x12947
1501B	Napoleon Cake dp, implementation, sortings	900	x18398
1501A	Alexey and Train implementation	800	x11511
1500F	Cupboards Jumps dp	3500	x326
1500E	Subset Trick binary search, data structures	3300	x209
1500D	Tiles for Bathroom data structures, sortings, two pointers	2900	x408
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x759
1500B	Two chandeliers binary search, brute force, chinese remainder theorem, math, number theory	2200	x1981
1500A	Going Home brute force, hashing, implementation, math	1800	x8500
1499G	Graph Coloring data structures, graphs, interactive	3100	x184
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x1234
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1398
1499D	The Number of Pairs dp, math, number theory	2100	x5416
1499C	Minimum Grid Path brute force, data structures, greedy, math	1500	x12296
1499B	Binary Removals brute force, dp, greedy, implementation	1000	x20195
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x20988
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x792
1498E	Two Houses brute force, graphs, greedy, interactive, sortings	2200	x1825
1498D	Bananas in a Microwave dfs and similar, dp, graphs, implementation	2200	x2238
1498C	Planar Reflections brute force, data structures, dp	1600	x9120
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x15971
1498A	GCD Sum brute force, math	800	x22569
1497E2	Square-free division (hard version) data structures, dp, greedy, math, number theory, two pointers	2500	x1554
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x8004
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1478
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x16353
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x24387
1497B	M-arrays constructive algorithms, greedy, math	1200	x18396
1497A	Meximization brute force, data structures, greedy, sortings	800	x23802
1496B	Max and Mex math	1100	x17168
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x20221
1495F	Squares constructive algorithms, data structures, dp, graphs, trees	3300	x273
1495E	Qingshan and Daniel brute force, data structures, greedy, implementation	3200	x394
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x1187
1495C	Garden of the Sun constructive algorithms, graphs	2300	x2494
1495B	Let's Go Hiking games, greedy	1900	x5824
1495A	Diamond Miner geometry, greedy, math, sortings	1200	x16623
1494F	Delete The Edges brute force, constructive algorithms, dfs and similar, graphs, implementation	2900	x323
1494E	A-Z Graph constructive algorithms, data structures, graphs, hashing	2400	x1648
1494D	Dogeforces constructive algorithms, data structures, dfs and similar, divide and conquer, dsu, greedy, sortings, trees	2300	x2482
1494C	1D Sokoban binary search, dp, greedy, implementation, two pointers	1900	x5215
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x13909
1494A	ABC String bitmasks, brute force, implementation	900	x20360
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x372
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x858
1493D	GCD of an Array brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers	2100	x4723
1493C	K-beautiful Strings binary search, brute force, constructive algorithms, greedy, strings	2000	x4441
1493B	Planet Lapituletti brute force, implementation	1300	x11600
1493A	Anti-knapsack constructive algorithms, greedy	800	x19085
1492E	Almost Fault-Tolerant Database brute force, constructive algorithms, dfs and similar, greedy, implementation	2500	x1158
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x5917
1492C	Maximum width binary search, data structures, dp, greedy, two pointers	1500	x15514
1492B	Card Deck data structures, greedy, math	1100	x18065
1492A	Three swimmers math	800	x22379
1491I	Ruler Of The Zoo brute force, data structures	3500	x72
1491H	Yuezheng Ling and Dynamic Tree data structures, trees	3400	x755
1491G	Switch and Flip constructive algorithms, graphs, math	2800	x709
1491F	Magnets binary search, constructive algorithms, interactive	2700	x894
1491E	Fib-tree brute force, dfs and similar, divide and conquer, number theory, trees	2400	x2035
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x6846
1491C	Pekora and Trampoline brute force, data structures, dp, greedy, implementation	1700	x7701
1491B	Minimal Cost brute force, math	1200	x13548
1491A	K-th Largest Value brute force, greedy, implementation	800	x18018
1490G	Old Floppy Drive binary search, data structures, math	1900	x5447
1490F	Equalize the Array binary search, data structures, greedy, math, sortings	1500	x15357
1490E	Accidental Victory binary search, data structures, greedy	1400	x18273
1490D	Permutation Transformation dfs and similar, divide and conquer, implementation	1200	x18727
1490C	Sum of Cubes binary search, brute force, brute force, math	1100	x31042
1490B	Balanced Remainders brute force, constructive algorithms, math	1000	x25495
1490A	Dense Array greedy, math	800	x30521
1488J	Flower Shop *special problem, data structures, fft, math	3100	x31
1488I	Demonic Invasion *special problem, flows	3100	x33
1488H	Build From Suffixes *special problem, combinatorics, data structures	2800	x52
1488G	Painting Numbers *special problem, data structures, greedy, number theory	2500	x114
1488F	Dogecoin special problem, special problem, binary search, data structures	2300	x166