Problemset - Codeforces

Problems

#	Name
900E	Maximum Questions data structures, dp, strings	2100	x1279
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3271
900C	Remove Extra One brute force, data structures, math	1700	x4578
899F	Letters Removing data structures, strings	2100	x1855
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x3099
899D	Shovel Sale constructive algorithms, math	1800	x2770
898F	Restoring the Expression brute force, hashing, math	2300	x1198
898E	Squares and not squares constructive algorithms, greedy	1600	x4604
898D	Alarm Clock greedy	1600	x3974
896E	Welcome home, Chtholly data structures, dsu	3100	x2160
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x537
896C	Willem, Chtholly and Seniorious data structures, probabilities	2600	x3493
896B	Ithea Plays With Chtholly binary search, constructive algorithms, games, greedy, interactive	2000	x2132
896A	Nephren gives a riddle binary search, dfs and similar	1700	x3470
895E	Eyes Closed data structures, probabilities	2300	x1125
895D	String Mark combinatorics, math, strings	2100	x1119
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5641
895B	XK Segments binary search, math, sortings, two pointers	1700	x3558
894E	Ralph and Mushrooms dp, graphs	2100	x2374
894D	Ralph And His Tour in Binary Country brute force, data structures, trees	2200	x1137
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4380
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4483
893F	Subtree Minimum Query data structures, trees	2300	x2010
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x3721
893D	Credit Card data structures, dp, greedy, implementation	1900	x3074
891E	Lust combinatorics, math, matrices	3000	x940
891D	Sloth dfs and similar, dp, graph matchings, trees	3100	x194
891C	Envy data structures, dsu, graphs	2300	x2421
891B	Gluttony constructive algorithms, greedy	2000	x3013
889E	Mod Mod Mod binary search, dp, math	3000	x567
888G	Xor-MST bitmasks, constructive algorithms, data structures	2300	x4595
888F	Connecting Vertices dp, graphs	2500	x842
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x7374
888D	Almost Identity Permutations combinatorics, dp, math	1600	x8498
887F	Row of Models greedy, sortings	2500	x166
887E	Little Brother binary search, geometry, sortings	2800	x164
887D	Ratings and Reality Shows data structures, two pointers	2400	x481
886F	Symmetric Projections geometry	2900	x268
886E	Maximum Element combinatorics, dp, math	2400	x1029
886D	Restoration of string constructive algorithms, graphs, implementation	2000	x1803
884F	Anti-Palindromize flows, graphs, greedy	2500	x1073
884E	Binary Matrix dsu	2500	x696
884D	Boxes And Balls data structures, greedy	2300	x2041
883L	Berland.Taxi data structures	2500	x233
883K	Road Widening constructive algorithms, greedy, implementation	1800	x1103
883J	Renovation constructive algorithms, greedy, sortings	2400	x581
883I	Photo Processing binary search, dp	1900	x2023
883H	Palindromic Cut brute force, implementation, strings	1800	x1621
883G	Orientation of Edges dfs and similar, graphs	1900	x1422
883D	Packmen Strike Back binary search, dp, math	2500	x442
883C	Downloading B++ binary search, implementation	2300	x629
883B	Berland Army constructive algorithms, graphs, greedy	2600	x378
883A	Automatic Door implementation	2200	x594
878E	Numbers on the blackboard combinatorics, dp	3300	x578
878D	Magic Breeding bitmasks	2900	x702
878C	Tournament data structures, graphs	2700	x928
878B	Teams Formation data structures, implementation	2300	x1072
878A	Short Program bitmasks, constructive algorithms	1600	x5544
877F	Ann and Books data structures, flows, hashing	2300	x1831
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x4612
877D	Olya and Energy Drinks data structures, dfs and similar, graphs, shortest paths	2100	x4412
877C	Slava and tanks constructive algorithms	1600	x5732
875F	Royal Questions dsu, graphs, greedy	2500	x1366
875E	Delivery Club binary search, data structures, dp	2600	x924
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x2287
875C	National Property 2-sat, dfs and similar, graphs, implementation	2100	x2136
873F	Forbidden Indices dsu, string suffix structures, strings	2400	x1412
873E	Awards For Contestants brute force, data structures, dp	2300	x702
873D	Merge Sort constructive algorithms, divide and conquer	1800	x3196
873C	Strange Game On Matrix greedy, two pointers	1600	x3314
871E	Restore the Tree graphs, greedy, trees	2900	x149
870F	Paths data structures, number theory	2700	x622
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x1237
870D	Something with XOR Queries brute force, interactive, probabilities	2000	x1232
869E	The Untended Antiquity data structures, hashing	2400	x1818
869D	The Overdosing Ubiquity brute force, dfs and similar, graphs	2800	x250
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4730
868G	El Toll Caves math	3300	x133
868F	Yet Another Minimization Problem divide and conquer, dp	2500	x3872
868E	Policeman and a Tree dp, graphs, trees	2700	x528
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x926
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x136
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x68
865E	Hex Dyslexia bitmasks, brute force, dp, graphs	3300	x139
865D	Buy Low Sell High constructive algorithms, data structures, greedy	2400	x5769
865C	Gotta Go Fast binary search, dp	2400	x851
865B	Ordering Pizza binary search, sortings, ternary search	1900	x1869
864F	Cities Excursions dfs and similar, graphs, trees	2700	x629
864E	Fire dp, sortings	2000	x4286
863G	Graphic Settings	3200	x56
863F	Almost Permutation flows	2200	x1265
863E	Turn Off The TV data structures, sortings	2000	x3186
863D	Yet Another Array Queries Problem data structures, implementation	1800	x3298
863C	1-2-3 graphs, implementation	1800	x2519
862F	Mahmoud and Ehab and the final stage data structures, strings	2900	x210
862E	Mahmoud and Ehab and the function binary search, data structures, sortings	2100	x1667
862D	Mahmoud and Ehab and the binary string binary search, divide and conquer, interactive	2000	x1890
862C	Mahmoud and Ehab and the xor constructive algorithms	1900	x4098
860E	Arkady and a Nobody-men data structures, dfs and similar, trees	2700	x444
859G	Circle of Numbers math	3000	x159