Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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bitmasks

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Problems

#	Name
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x28324
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8300
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x304
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1158
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6456
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8495
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12379
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x669
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17265
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x446
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6673
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1438
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1426
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x15938
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x393
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7421
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5179
1533H	Submatrices *special problem, bitmasks, data structures, dp		x80
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x748
1527A	And Then There Were K bitmasks	800	x33788
1523F	Favorite Game bitmasks, dp	3300	x394
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2075
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x385
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11491
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x17998
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x211
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22585
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13682
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x697
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1417
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x762
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x842
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x16024
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1480
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x13917
1494A	ABC String bitmasks, brute force, implementation	900	x20381
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x373
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x861
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x5919
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x6865
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x952
1479C	Continuous City bitmasks, constructive algorithms	2500	x1255
1476E	Pattern Matching bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings	2300	x2238
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x6136
1469E	A Bit Similar bitmasks, brute force, hashing, string suffix structures, strings, two pointers	2400	x1848
1466F	Euclid's nightmare bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings	2100	x2786
1466E	Apollo versus Pan bitmasks, brute force, math	1800	x6930
1463F	Max Correct Set bitmasks, dp, math	3100	x550
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x18693
1451E2	Bitwise Queries (Hard Version) bitmasks, constructive algorithms, interactive, math	2300	x2824
1451E1	Bitwise Queries (Easy Version) bitmasks, constructive algorithms, interactive, math	2000	x4181
1450G	Communism bitmasks, dp, trees	3500	x229
1446C	Xor Tree binary search, bitmasks, data structures, divide and conquer, dp, trees	2100	x3383
1439E	Cheat and Win bitmasks, data structures, games, trees	3500	x214
1438E	Yurii Can Do Everything binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers	2500	x1290
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4056
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x620
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1258
1423J	Bubble Cup hypothesis bitmasks, constructive algorithms, dp, math	2400	x730
1423I	Lookup Tables bitmasks	3000	x101
1421A	XORwice bitmasks, greedy, math	800	x27084
1420B	Rock and Lever bitmasks, math	1200	x23511
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4161
1415D	XOR-gun bitmasks, brute force, constructive algorithms	2000	x5155
1411G	No Game No Life bitmasks, games, math, matrices	2700	x578
1411E	Poman Numbers bitmasks, greedy, math, strings	2300	x1553
1401F	Reverse and Swap binary search, bitmasks, data structures	2400	x1469
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x891
1398G	Running Competition bitmasks, fft, math, number theory	2600	x760
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13486
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x441
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3234
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x4920
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x427
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18277
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x556
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4748
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11187
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x914
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1109
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x16947
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18276
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1378
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x4276
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11817
1342F	Make It Ascending bitmasks, brute force, dp	3000	x664
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7565
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x2958
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8033
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x283
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x647
1334G	Substring Search bitmasks, brute force, fft	2900	x353
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x7807
1331C	...And after happily lived ever they *special problem, bitmasks		x3131
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6348
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x401
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1601
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x456
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x805
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11504