Problemset - Codeforces

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Codeforces Round 974 (Div. 3)
02:07:37
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Problems

#	Name
1572B	Xor of 3 brute force, constructive algorithms, greedy, two pointers	2500	x1819
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x8946
1571J	Two Railroads *special problem	3000	x40
1571I	Physical Examination *special problem, binary search, data structures	3200	x58
1571H	Laser Beams *special problem, geometry, probabilities	2900	x48
1571G	A Battle Against a Dragon *special problem, data structures, dp	2500	x75
1571F	Kotlinforces *special problem, constructive algorithms, dp	2000	x182
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x335
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x329
1571C	Rhyme *special problem, implementation	1800	x373
1571B	Epic Novel *special problem, math	1300	x710
1571A	Sequence of Comparisons *special problem	800	x1292
1569F	Palindromic Hamiltonian Path brute force, dfs and similar, dp, graphs, hashing	3000	x237
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x801
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4370
1569C	Jury Meeting combinatorics, math	1500	x11991
1569B	Chess Tournament constructive algorithms	1000	x18824
1569A	Balanced Substring implementation	800	x25519
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x747
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3635
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4498
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12153
1567B	MEXor Mixup bitmasks, greedy	1000	x22939
1567A	Domino Disaster implementation, strings	800	x30038
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x129
1566G	Four Vertices constructive algorithms, data structures, graphs, greedy, implementation, shortest paths	3100	x339
1566F	Points Movement data structures, dp, greedy, implementation, sortings	2600	x949
1566E	Buds Re-hanging constructive algorithms, dfs and similar, dp, greedy, trees	2000	x4111
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7833
1566D1	Seating Arrangements (easy version) data structures, greedy, sortings	1100	x13971
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17501
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19541
1566A	Median Maximization binary search, greedy, math	800	x23203
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x401
1562E	Rescue Niwen! dp, greedy, string suffix structures, strings	2500	x1403
1562D2	Two Hundred Twenty One (hard version) data structures, math	2200	x2128
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6329
1562C	Rings constructive algorithms, math	1500	x13249
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19562
1562A	The Miracle and the Sleeper greedy, math	800	x25535
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5597
1561C	Deep Down Below binary search, greedy, sortings	1300	x14519
1561A	Simply Strange Sort brute force, implementation, sortings	800	x16549
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x4369
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x6124
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x7946
1560D	Make a Power of Two greedy, math, strings	1300	x18159
1560C	Infinity Table implementation, math	800	x26558
1560B	Who's Opposite? math	800	x35542
1560A	Dislike of Threes implementation	800	x59461
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2297
1559D2	Mocha and Diana (Hard Version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers	2500	x2632
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13755
1559C	Mocha and Hiking constructive algorithms, graphs	1200	x20385
1559B	Mocha and Red and Blue dp, greedy	900	x22444
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x31132
1558F	Strange Sort data structures, sortings	3300	x388
1558E	Down Below binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths	3000	x470
1558D	Top-Notch Insertions combinatorics, data structures	2600	x964
1558C	Bottom-Tier Reversals constructive algorithms, greedy	2000	x3262
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4783
1558A	Charmed by the Game brute force, math	1300	x11062
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x709
1557D	Ezzat and Grid data structures, dp, greedy	2200	x2544
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8579
1557B	Moamen and k-subarrays greedy, sortings	1100	x23402
1557A	Ezzat and Two Subsequences brute force, math, sortings	800	x27880
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x364
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x323
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1224
1556E	Equilibrium data structures, dp, greedy	2200	x2699
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6887
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5780
1556B	Take Your Places! implementation	1300	x12670
1556A	A Variety of Operations math	800	x18057
1555F	Good Graph data structures, dsu, graphs, trees	2700	x851
1555E	Boring Segments data structures, sortings, trees, two pointers	2100	x4024
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x12326
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x21655
1555B	Two Tables brute force	1300	x16028
1555A	PizzaForces brute force, math	900	x28003
1554E	You dfs and similar, dp, math, number theory	2600	x1218
1554D	Diane constructive algorithms, greedy, strings	1800	x9413
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8847
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12738
1554A	Cherry greedy	800	x29232
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x203
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x700
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x1020
1553F	Pairwise Modulo data structures, math	2300	x2224
1553E	Permutation Shift brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math	2100	x3318
1553D	Backspace dp, greedy, strings, two pointers	1500	x13694
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17799
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x14118
1553A	Digits Sum math, number theory	800	x30920
1552I	Organizing a Music Festival dfs and similar, math	3400	x128
1552H	Guess the Perimeter binary search, interactive, number theory	3300	x388
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x527
1552F	Telepanting binary search, data structures, dp, sortings	2200	x2891
1552E	Colors and Intervals constructive algorithms, data structures, greedy, sortings	2300	x1833