Problemset - Codeforces

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Before contest
Codeforces Round (Div. 1)
6 days

Before contest
Codeforces Round (Div. 2)
6 days

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Problems

#	Name
522B	Photo to Remember *special problem, data structures, dp, implementation	1100	x9093
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x16842
521E	Cycling City dfs and similar, graphs	3100	x1097
521D	Shop greedy	2800	x1645
520E	Pluses everywhere combinatorics, dp, math, number theory	2200	x1911
520D	Cubes games, greedy, implementation	2100	x1595
520C	DNA Alignment math, strings	1500	x4204
520B	Two Buttons dfs and similar, graphs, greedy, implementation, math, shortest paths	1400	x53400
520A	Pangram implementation, strings	800	x104813
519E	A and B and Lecture Rooms binary search, data structures, dfs and similar, dp, trees	2100	x7218
519D	A and B and Interesting Substrings data structures, dp, two pointers	1800	x6439
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x20014
519B	A and B and Compilation Errors data structures, implementation, sortings	1100	x40550
519A	A and B and Chess implementation	900	x19264
518F	Pasha and Pipe binary search, brute force, combinatorics, dp, implementation	2300	x388
518E	Arthur and Questions greedy, implementation, math, ternary search	2200	x1009
518D	Ilya and Escalator combinatorics, dp, math, probabilities	1700	x7202
518C	Anya and Smartphone constructive algorithms, data structures, implementation	1600	x6100
518B	Tanya and Postcard greedy, implementation, strings	1400	x8103
518A	Vitaly and Strings constructive algorithms, strings	1600	x9317
516E	Drazil and His Happy Friends math, number theory	3100	x527
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1340
515E	Drazil and Park data structures	2300	x2212
515D	Drazil and Tiles constructive algorithms, greedy	2000	x2878
515C	Drazil and Factorial greedy, math, sortings	1400	x26678
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7520
515A	Drazil and Date math	1000	x20699
514E	Darth Vader and Tree dp, matrices	2200	x1469
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x4641
514C	Watto and Mechanism binary search, data structures, hashing, string suffix structures, strings	2000	x7181
514B	Han Solo and Lazer Gun brute force, data structures, geometry, implementation, math	1400	x21295
514A	Chewbaсca and Number greedy, implementation	1200	x57042
513G3	Inversions problem dp	3100	x271
513G2	Inversions problem dp, probabilities	2400	x671
513G1	Inversions problem brute force, dfs and similar, dp, meet-in-the-middle	1800	x1805
513F2	Scaygerboss flows	2800	x364
513F1	Scaygerboss flows	2700	x329
513E2	Subarray Cuts dp	2700	x614
513E1	Subarray Cuts dp	2600	x512
513D2	Constrained Tree constructive algorithms, data structures	2600	x386
513D1	Constrained Tree dfs and similar	2400	x622
513C	Second price auction bitmasks, probabilities	2000	x1573
513B2	Permutations bitmasks, divide and conquer, math	1800	x2831
513B1	Permutations brute force	1400	x3736
513A	Game constructive algorithms, math	800	x20770
512E	Fox And Polygon constructive algorithms, divide and conquer	2900	x528
512D	Fox And Travelling dp, trees	2900	x995
510E	Fox And Dinner flows	2300	x2256
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5782
510C	Fox And Names dfs and similar, graphs, sortings	1600	x17152
510B	Fox And Two Dots dfs and similar	1500	x14473
510A	Fox And Snake implementation	800	x89210
509F	Progress Monitoring dp, trees	2300	x1096
509E	Pretty Song math, strings	2000	x1817
509D	Restoring Numbers constructive algorithms, math	2200	x768
509C	Sums of Digits dp, greedy, implementation	2000	x2124
509B	Painting Pebbles constructive algorithms, greedy, implementation	1300	x9723
509A	Maximum in Table brute force, implementation	800	x39284
508E	Arthur and Brackets dp, greedy	2200	x1793
508D	Tanya and Password dfs and similar, graphs	2500	x3614
508C	Anya and Ghosts constructive algorithms, greedy	1600	x4506
508B	Anton and currency you all know greedy, math, strings	1300	x22959
508A	Pasha and Pixels brute force	1100	x8028
507E	Breaking Good dfs and similar, dp, graphs, shortest paths	2100	x3015
507D	The Maths Lecture dp, implementation	2200	x1888
507C	Guess Your Way Out! implementation, math, trees	1700	x4411
507B	Amr and Pins geometry, math	1400	x25212
507A	Amr and Music greedy, implementation, sortings	1000	x19276
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x777
506D	Mr. Kitayuta's Colorful Graph brute force, dfs and similar, dsu, graphs	2400	x2241
505E	Mr. Kitayuta vs. Bamboos binary search, greedy	2900	x1428
505D	Mr. Kitayuta's Technology dfs and similar	2200	x2635
505C	Mr. Kitayuta, the Treasure Hunter dfs and similar, dp, two pointers	1900	x6603
505B	Mr. Kitayuta's Colorful Graph dfs and similar, dp, dsu, graphs	1400	x13525
505A	Mr. Kitayuta's Gift brute force, implementation, strings	1100	x6726
504E	Misha and LCP on Tree binary search, dfs and similar, hashing, string suffix structures, trees	3000	x963
504D	Misha and XOR bitmasks	2700	x311
501E	Misha and Palindrome Degree binary search, combinatorics, implementation	2500	x928
501D	Misha and Permutations Summation data structures	2000	x2476
501C	Misha and Forest constructive algorithms, data structures, greedy, sortings, trees	1500	x5709
501B	Misha and Changing Handles data structures, dsu, strings	1100	x17130
501A	Contest implementation	900	x23227
500G	New Year Running number theory, trees	3200	x160
500F	New Year Shopping divide and conquer, dp	2700	x756
500E	New Year Domino data structures, dp, dsu	2300	x1477
500D	New Year Santa Network combinatorics, dfs and similar, graphs, trees	1900	x3142
500C	New Year Book Reading constructive algorithms, greedy, implementation, math	1600	x5853
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x9029
500A	New Year Transportation dfs and similar, graphs, implementation	1000	x55374
499B	Lecture implementation, strings	1000	x40732
499A	Watching a movie greedy, implementation	1000	x14104
498E	Stairs and Lines dp, matrices	2700	x486
498D	Traffic Jams in the Land data structures, dp, number theory	2400	x1145
498C	Array and Operations flows, graph matchings, number theory	2100	x3601
498B	Name That Tune dp, probabilities, two pointers	2400	x1213
498A	Crazy Town geometry	1700	x6544
497E	Subsequences Return dp, matrices	2900	x291
497D	Gears brute force, geometry, math	2900	x234
496E	Distributing Parts greedy, sortings	2100	x1684
496D	Tennis Game binary search	1900	x3066