Problemset - Codeforces

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Codeforces Round (Div. 2)
4 days
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Problems

#	Name
522D	Closest Equals *special problem, data structures	2000	x3166
522C	Chicken or Fish? greedy	2100	x720
522B	Photo to Remember *special problem, data structures, dp, implementation	1100	x8846
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x16275
521E	Cycling City dfs and similar, graphs	3100	x1007
521D	Shop greedy	2800	x1598
520E	Pluses everywhere combinatorics, dp, math, number theory	2200	x1874
520D	Cubes games, greedy, implementation	2100	x1548
520C	DNA Alignment math, strings	1500	x4146
520B	Two Buttons dfs and similar, graphs, greedy, implementation, math, shortest paths	1400	x50808
520A	Pangram implementation, strings	800	x96753
519E	A and B and Lecture Rooms binary search, data structures, dfs and similar, dp, trees	2100	x6844
519D	A and B and Interesting Substrings data structures, dp, two pointers	1800	x6368
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19702
519B	A and B and Compilation Errors data structures, implementation, sortings	1100	x39112
519A	A and B and Chess implementation	900	x18970
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	x6964
518C	Anya and Smartphone constructive algorithms, data structures, implementation	1600	x5994
518B	Tanya and Postcard greedy, implementation, strings	1400	x7957
518A	Vitaly and Strings constructive algorithms, strings	1600	x9210
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	x25897
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7441
515A	Drazil and Date math	1000	x20204
514E	Darth Vader and Tree dp, matrices	2200	x1429
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x4366
514C	Watto and Mechanism binary search, data structures, hashing, string suffix structures, strings	2000	x6813
514B	Han Solo and Lazer Gun brute force, data structures, geometry, implementation, math	1400	x20768
514A	Chewbaсca and Number greedy, implementation	1200	x51871
513G3	Inversions problem dp	3100	x263
513G2	Inversions problem dp, probabilities	2400	x655
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	x2631
513B1	Permutations brute force	1400	x3623
513A	Game constructive algorithms, math	800	x20199
512E	Fox And Polygon constructive algorithms, divide and conquer	2900	x520
512D	Fox And Travelling dp, trees	2900	x970
510E	Fox And Dinner flows	2300	x2194
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5476
510C	Fox And Names dfs and similar, graphs, sortings	1600	x16206
510B	Fox And Two Dots dfs and similar	1500	x13965
510A	Fox And Snake implementation	800	x83166
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
509B	Painting Pebbles constructive algorithms, greedy, implementation	1300	x9616
509A	Maximum in Table brute force, implementation	800	x38188
508E	Arthur and Brackets dp, greedy	2200	x1753
508D	Tanya and Password dfs and similar, graphs	2500	x3391
508C	Anya and Ghosts constructive algorithms, greedy	1600	x4461
508B	Anton and currency you all know greedy, math, strings	1300	x22580
508A	Pasha and Pixels brute force	1100	x7885
507E	Breaking Good dfs and similar, dp, graphs, shortest paths	2100	x2861
507D	The Maths Lecture dp, implementation	2200	x1757
507C	Guess Your Way Out! implementation, math, trees	1700	x4329
507B	Amr and Pins geometry, math	1400	x24508
507A	Amr and Music greedy, implementation, sortings	1000	x18286
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x740
506D	Mr. Kitayuta's Colorful Graph brute force, dfs and similar, dsu, graphs	2400	x2128
505E	Mr. Kitayuta vs. Bamboos binary search, greedy	2900	x1395
505D	Mr. Kitayuta's Technology dfs and similar	2200	x2523
505C	Mr. Kitayuta, the Treasure Hunter dfs and similar, dp, two pointers	1900	x6351
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x12947
505A	Mr. Kitayuta's Gift brute force, implementation, strings	1100	x6671
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	x2395
501C	Misha and Forest constructive algorithms, data structures, greedy, sortings, trees	1500	x5647
501B	Misha and Changing Handles data structures, dsu, strings	1100	x16156
501A	Contest implementation	900	x22743
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	x5807
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x8868
500A	New Year Transportation dfs and similar, graphs, implementation	1000	x52914
499B	Lecture implementation, strings	1000	x39119
499A	Watching a movie greedy, implementation	1000	x13936
498E	Stairs and Lines dp, matrices	2700	x467
498D	Traffic Jams in the Land data structures, dp, number theory	2400	x1112
498C	Array and Operations flows, graph matchings, number theory	2100	x3417
498B	Name That Tune dp, probabilities, two pointers	2400	x1170
498A	Crazy Town geometry	1700	x6447
497E	Subsequences Return dp, matrices	2900	x285
497D	Gears brute force, geometry, math	2900	x228