Problemset - Codeforces

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Codeforces Round 974 (Div. 3)
01:19:21
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Problems

#	Name
903D	Almost Difference data structures, math	2200	x3771
901E	Cyclic Cipher fft, math	3300	x86
901D	Weighting a Tree constructive algorithms, dfs and similar, graphs	2700	x500
901C	Bipartite Segments binary search, data structures, dfs and similar, dsu, graphs, two pointers	2300	x1168
901B	GCD of Polynomials constructive algorithms, math	2200	x1580
900E	Maximum Questions data structures, dp, strings	2100	x1233
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3204
900C	Remove Extra One brute force, data structures, math	1700	x4537
899F	Letters Removing data structures, strings	2100	x1828
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x3020
899D	Shovel Sale constructive algorithms, math	1800	x2749
898F	Restoring the Expression brute force, hashing, math	2300	x1187
898E	Squares and not squares constructive algorithms, greedy	1600	x4565
898D	Alarm Clock greedy	1600	x3890
896E	Welcome home, Chtholly data structures, dsu	3100	x2126
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x529
896C	Willem, Chtholly and Seniorious data structures, probabilities	2600	x3394
896B	Ithea Plays With Chtholly binary search, constructive algorithms, games, greedy, interactive	2000	x2115
896A	Nephren gives a riddle binary search, dfs and similar	1700	x3445
895E	Eyes Closed data structures, probabilities	2300	x1105
895D	String Mark combinatorics, math, strings	2100	x1107
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5467
895B	XK Segments binary search, math, sortings, two pointers	1700	x3469
894E	Ralph and Mushrooms dp, graphs	2100	x2305
894D	Ralph And His Tour in Binary Country brute force, data structures, trees	2200	x1128
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4362
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4461
893F	Subtree Minimum Query data structures, trees	2300	x1981
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x3629
893D	Credit Card data structures, dp, greedy, implementation	1900	x3033
891E	Lust combinatorics, math, matrices	3000	x925
891D	Sloth dfs and similar, dp, graph matchings, trees	3100	x191
891C	Envy data structures, dsu, graphs	2300	x2359
891B	Gluttony constructive algorithms, greedy	2000	x2980
889E	Mod Mod Mod binary search, dp, math	3000	x546
888G	Xor-MST bitmasks, constructive algorithms, data structures	2300	x4471
888F	Connecting Vertices dp, graphs	2500	x800
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x7176
888D	Almost Identity Permutations combinatorics, dp, math	1600	x8255
887F	Row of Models greedy, sortings	2500	x164
887E	Little Brother binary search, geometry, sortings	2800	x163
887D	Ratings and Reality Shows data structures, two pointers	2400	x476
886F	Symmetric Projections geometry	2900	x267
886E	Maximum Element combinatorics, dp, math	2400	x1014
886D	Restoration of string constructive algorithms, graphs, implementation	2000	x1779
884F	Anti-Palindromize flows, graphs, greedy	2500	x1056
884E	Binary Matrix dsu	2500	x683
884D	Boxes And Balls data structures, greedy	2300	x1994
883L	Berland.Taxi data structures	2500	x231
883K	Road Widening constructive algorithms, greedy, implementation	1800	x1087
883J	Renovation constructive algorithms, greedy, sortings	2400	x576
883I	Photo Processing binary search, dp	1900	x1956
883H	Palindromic Cut brute force, implementation, strings	1800	x1611
883G	Orientation of Edges dfs and similar, graphs	1900	x1409
883D	Packmen Strike Back binary search, dp, math	2500	x371
883C	Downloading B++ binary search, implementation	2300	x626
883B	Berland Army constructive algorithms, graphs, greedy	2600	x343
883A	Automatic Door implementation	2200	x587
878E	Numbers on the blackboard combinatorics, dp	3300	x517
878D	Magic Breeding bitmasks	2900	x671
878C	Tournament data structures, graphs	2700	x920
878B	Teams Formation data structures, implementation	2300	x1054
878A	Short Program bitmasks, constructive algorithms	1600	x5453
877F	Ann and Books data structures, flows, hashing	2300	x1782
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x4448
877D	Olya and Energy Drinks data structures, dfs and similar, graphs, shortest paths	2100	x4314
877C	Slava and tanks constructive algorithms	1600	x5666
875F	Royal Questions dsu, graphs, greedy	2500	x1328
875E	Delivery Club binary search, data structures, dp	2600	x907
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x2239
875C	National Property 2-sat, dfs and similar, graphs, implementation	2100	x2116
873F	Forbidden Indices dsu, string suffix structures, strings	2400	x1367
873E	Awards For Contestants brute force, data structures, dp	2300	x691
873D	Merge Sort constructive algorithms, divide and conquer	1800	x3134
873C	Strange Game On Matrix greedy, two pointers	1600	x3261
871E	Restore the Tree graphs, greedy, trees	2900	x148
870F	Paths data structures, number theory	2700	x613
870E	Points, Lines and Ready-made Titles dfs and similar, dsu, graphs, trees	2300	x1227
870D	Something with XOR Queries brute force, interactive, probabilities	2000	x1216
869E	The Untended Antiquity data structures, hashing	2400	x1733
869D	The Overdosing Ubiquity brute force, dfs and similar, graphs	2800	x250
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4678
868G	El Toll Caves math	3300	x131
868F	Yet Another Minimization Problem divide and conquer, dp	2500	x3733
868E	Policeman and a Tree dp, graphs, trees	2700	x489
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x904
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x135
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	x124
865D	Buy Low Sell High constructive algorithms, data structures, greedy	2400	x5450
865C	Gotta Go Fast binary search, dp	2400	x836
865B	Ordering Pizza binary search, sortings, ternary search	1900	x1825
864F	Cities Excursions dfs and similar, graphs, trees	2700	x616
864E	Fire dp, sortings	2000	x4231
863G	Graphic Settings	3200	x55
863F	Almost Permutation flows	2200	x1240
863E	Turn Off The TV data structures, sortings	2000	x3084
863D	Yet Another Array Queries Problem data structures, implementation	1800	x3238
863C	1-2-3 graphs, implementation	1800	x2489
862F	Mahmoud and Ehab and the final stage data structures, strings	2900	x202