Problemset - Codeforces

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Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
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Problems

#	Name
521E	Cycling City dfs and similar, graphs	3100	x1007
521D	Shop greedy	2800	x1598
520E	Pluses everywhere combinatorics, dp, math, number theory	2200	x1873
520D	Cubes games, greedy, implementation	2100	x1548
520C	DNA Alignment math, strings	1500	x4145
520B	Two Buttons dfs and similar, graphs, greedy, implementation, math, shortest paths	1400	x50774
519E	A and B and Lecture Rooms binary search, data structures, dfs and similar, dp, trees	2100	x6835
519D	A and B and Interesting Substrings data structures, dp, two pointers	1800	x6366
518F	Pasha and Pipe binary search, brute force, combinatorics, dp, implementation	2300	x367
518E	Arthur and Questions greedy, implementation, math, ternary search	2200	x930
518D	Ilya and Escalator combinatorics, dp, math, probabilities	1700	x6961
518C	Anya and Smartphone constructive algorithms, data structures, implementation	1600	x5992
518B	Tanya and Postcard greedy, implementation, strings	1400	x7953
518A	Vitaly and Strings constructive algorithms, strings	1600	x9208
516E	Drazil and His Happy Friends math, number theory	3100	x504
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1310
515E	Drazil and Park data structures	2300	x2117
515D	Drazil and Tiles constructive algorithms, greedy	2000	x2838
515C	Drazil and Factorial greedy, math, sortings	1400	x25882
514E	Darth Vader and Tree dp, matrices	2200	x1428
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x4365
514C	Watto and Mechanism binary search, data structures, hashing, string suffix structures, strings	2000	x6809
514B	Han Solo and Lazer Gun brute force, data structures, geometry, implementation, math	1400	x20755
513G3	Inversions problem dp	3100	x263
513G2	Inversions problem dp, probabilities	2400	x654
513G1	Inversions problem brute force, dfs and similar, dp, meet-in-the-middle	1800	x1785
513F2	Scaygerboss flows	2800	x355
513F1	Scaygerboss flows	2700	x322
513E2	Subarray Cuts dp	2700	x572
513E1	Subarray Cuts dp	2600	x482
513D2	Constrained Tree constructive algorithms, data structures	2600	x379
513D1	Constrained Tree dfs and similar	2400	x616
513C	Second price auction bitmasks, probabilities	2000	x1546
513B2	Permutations bitmasks, divide and conquer, math	1800	x2630
513B1	Permutations brute force	1400	x3622
512E	Fox And Polygon constructive algorithms, divide and conquer	2900	x520
512D	Fox And Travelling dp, trees	2900	x969
510E	Fox And Dinner flows	2300	x2193
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5467
510C	Fox And Names dfs and similar, graphs, sortings	1600	x16189
510B	Fox And Two Dots dfs and similar	1500	x13949
509F	Progress Monitoring dp, trees	2300	x1064
509E	Pretty Song math, strings	2000	x1792
509D	Restoring Numbers constructive algorithms, math	2200	x745
509C	Sums of Digits dp, greedy, implementation	2000	x2069
508E	Arthur and Brackets dp, greedy	2200	x1753
508D	Tanya and Password dfs and similar, graphs	2500	x3390
508C	Anya and Ghosts constructive algorithms, greedy	1600	x4461
507E	Breaking Good dfs and similar, dp, graphs, shortest paths	2100	x2860
507D	The Maths Lecture dp, implementation	2200	x1756
507C	Guess Your Way Out! implementation, math, trees	1700	x4328
507B	Amr and Pins geometry, math	1400	x24498
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x737
506D	Mr. Kitayuta's Colorful Graph brute force, dfs and similar, dsu, graphs	2400	x2128
505E	Mr. Kitayuta vs. Bamboos binary search, greedy	2900	x1394
505D	Mr. Kitayuta's Technology dfs and similar	2200	x2522
505C	Mr. Kitayuta, the Treasure Hunter dfs and similar, dp, two pointers	1900	x6348
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x12931
504E	Misha and LCP on Tree binary search, dfs and similar, hashing, string suffix structures, trees	3000	x909
504D	Misha and XOR bitmasks	2700	x307
501E	Misha and Palindrome Degree binary search, combinatorics, implementation	2500	x914
501D	Misha and Permutations Summation data structures	2000	x2393
501C	Misha and Forest constructive algorithms, data structures, greedy, sortings, trees	1500	x5644
500G	New Year Running number theory, trees	3200	x157
500F	New Year Shopping divide and conquer, dp	2700	x731
500E	New Year Domino data structures, dp, dsu	2300	x1427
500D	New Year Santa Network combinatorics, dfs and similar, graphs, trees	1900	x3116
500C	New Year Book Reading constructive algorithms, greedy, implementation, math	1600	x5806
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x8866
498E	Stairs and Lines dp, matrices	2700	x467
498D	Traffic Jams in the Land data structures, dp, number theory	2400	x1110
498C	Array and Operations flows, graph matchings, number theory	2100	x3416
498B	Name That Tune dp, probabilities, two pointers	2400	x1169
498A	Crazy Town geometry	1700	x6447
497E	Subsequences Return dp, matrices	2900	x285
497D	Gears brute force, geometry, math	2900	x228
496E	Distributing Parts greedy, sortings	2100	x1656
496D	Tennis Game binary search	1900	x3013
496C	Removing Columns brute force, constructive algorithms, implementation	1500	x7731
496B	Secret Combination brute force, constructive algorithms, implementation	1500	x5875
495B	Modular Equations math, number theory	1600	x6910
494E	Sharti data structures, games	3200	x316
494D	Birthday data structures, dfs and similar, dp, trees	2700	x524
494C	Helping People dp, probabilities	2600	x857
494B	Obsessive String dp, strings	2000	x2698
494A	Treasure greedy	1500	x6228
493E	Vasya and Polynomial math	2800	x485
493D	Vasya and Chess constructive algorithms, games, math	1700	x9658
493C	Vasya and Basketball binary search, brute force, data structures, implementation, sortings, two pointers	1600	x6790
493B	Vasya and Wrestling implementation	1400	x13292
492E	Vanya and Field math	2000	x1625
492D	Vanya and Computer Game binary search, implementation, math, sortings	1800	x3154
492C	Vanya and Exams greedy, sortings	1400	x14031
491C	Deciphering flows, graph matchings	2300	x410
491B	New York Hotel greedy, math	2100	x555
490F	Treeland Tour data structures, dfs and similar, dp, trees	2200	x1681
490E	Restoring Increasing Sequence binary search, brute force, greedy, implementation	2000	x1596
490D	Chocolate brute force, dfs and similar, math, meet-in-the-middle, number theory	1900	x2135
490C	Hacking Cypher brute force, math, number theory, strings	1700	x9072
490B	Queue dsu, implementation	1500	x5987