Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
31:13:40
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Problems

#	Name
911A	Nearest Minimums implementation	1100	x11540
910C	Minimum Sum constructive algorithms, greedy, math	1700	x1818
910B	Door Frames greedy, implementation	1600	x1716
910A	The Way to Home dfs and similar, dp, greedy, implementation	800	x12238
909F	AND-permutations constructive algorithms	2500	x582
909E	Coprocessor dfs and similar, dp, graphs, greedy	1900	x2136
909D	Colorful Points data structures, greedy, implementation	2100	x1953
909C	Python Indentation dp	1800	x4980
909B	Segments constructive algorithms, math	1300	x6469
909A	Generate Login brute force, greedy, sortings	1000	x9367
908H	New Year and Boolean Bridges	3100	x393
908G	New Year and Original Order dp, math	2800	x1381
908F	New Year and Rainbow Roads graphs, greedy, implementation	2400	x1410
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x762
908D	New Year and Arbitrary Arrangement dp, math, probabilities	2200	x2400
908C	New Year and Curling brute force, geometry, implementation, math	1500	x6952
908B	New Year and Buggy Bot brute force, implementation	1200	x7708
908A	New Year and Counting Cards brute force, implementation	800	x14885
907B	Tic-Tac-Toe implementation	1400	x4076
907A	Masha and Bears brute force, implementation	1300	x5716
906E	Reverses dp, string suffix structures, strings	3300	x460
906D	Power Tower chinese remainder theorem, math, number theory	2700	x2166
906C	Party bitmasks, brute force, dp, graphs	2400	x1385
906B	Seating of Students brute force, constructive algorithms, math	2200	x1147
906A	Shockers implementation, strings	1600	x4148
903G	Yet Another Maxflow Problem data structures, flows, graphs	2700	x566
903F	Clear The Matrix bitmasks, dp	2200	x691
903E	Swapping Characters brute force, hashing, implementation, strings	2200	x1487
903D	Almost Difference data structures, math	2200	x3917
903C	Boxes Packing greedy	1200	x18316
903B	The Modcrab greedy, implementation	1200	x7781
903A	Hungry Student Problem greedy, implementation	900	x14702
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x10933
902A	Visiting a Friend greedy, implementation	1100	x9874
901E	Cyclic Cipher fft, math	3300	x88
901D	Weighting a Tree constructive algorithms, dfs and similar, graphs	2700	x527
901C	Bipartite Segments binary search, data structures, dfs and similar, dsu, graphs, two pointers	2300	x1191
901B	GCD of Polynomials constructive algorithms, math	2200	x1587
901A	Hashing Trees constructive algorithms, trees	1500	x5135
900E	Maximum Questions data structures, dp, strings	2100	x1280
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3291
900C	Remove Extra One brute force, data structures, math	1700	x4596
900B	Position in Fraction math, number theory	1300	x7893
900A	Find Extra One geometry, implementation	800	x13696
899F	Letters Removing data structures, strings	2100	x1866
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x3124
899D	Shovel Sale constructive algorithms, math	1800	x2775
899C	Dividing the numbers constructive algorithms, graphs, math	1300	x8552
899B	Months and Years implementation	1200	x5926
899A	Splitting in Teams constructive algorithms, greedy, math	800	x10304
898F	Restoring the Expression brute force, hashing, math	2300	x1208
898E	Squares and not squares constructive algorithms, greedy	1600	x4642
898D	Alarm Clock greedy	1600	x4000
898C	Phone Numbers implementation, strings	1400	x5326
898B	Proper Nutrition brute force, implementation, number theory	1100	x9645
898A	Rounding implementation, math	800	x16463
897B	Chtholly's request brute force	1300	x7222
897A	Scarborough Fair implementation	800	x14354
896E	Welcome home, Chtholly data structures, dsu	3100	x2175
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x540
896C	Willem, Chtholly and Seniorious data structures, probabilities	2600	x3535
896B	Ithea Plays With Chtholly binary search, constructive algorithms, games, greedy, interactive	2000	x2153
896A	Nephren gives a riddle binary search, dfs and similar	1700	x3476
895E	Eyes Closed data structures, probabilities	2300	x1130
895D	String Mark combinatorics, math, strings	2100	x1133
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5697
895B	XK Segments binary search, math, sortings, two pointers	1700	x3573
895A	Pizza Separation brute force, implementation	1200	x6590
894E	Ralph and Mushrooms dp, graphs	2100	x2387
894D	Ralph And His Tour in Binary Country brute force, data structures, trees	2200	x1140
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4391
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4496
894A	QAQ brute force, dp	800	x35310
893F	Subtree Minimum Query data structures, trees	2300	x2049
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x3743
893D	Credit Card data structures, dp, greedy, implementation	1900	x3085
893C	Rumor dfs and similar, graphs, greedy	1300	x23798
893B	Beautiful Divisors brute force, implementation	1000	x11574
893A	Chess For Three implementation	900	x10313
892B	Wrath greedy, implementation, two pointers	1200	x9089
892A	Greed greedy, implementation	900	x13683
891E	Lust combinatorics, math, matrices	3000	x947
891D	Sloth dfs and similar, dp, graph matchings, trees	3100	x194
891C	Envy data structures, dsu, graphs	2300	x2436
891B	Gluttony constructive algorithms, greedy	2000	x3021
891A	Pride brute force, dp, greedy, math, number theory	1500	x10408
889E	Mod Mod Mod binary search, dp, math	3000	x571
888G	Xor-MST bitmasks, constructive algorithms, data structures	2300	x4695
888F	Connecting Vertices dp, graphs	2500	x871
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x7469
888D	Almost Identity Permutations combinatorics, dp, math	1600	x8595
888C	K-Dominant Character binary search, implementation, two pointers	1400	x8321
888B	Buggy Robot greedy	1000	x9899
888A	Local Extrema brute force, implementation	800	x11116
887F	Row of Models greedy, sortings	2500	x168
887E	Little Brother binary search, geometry, sortings	2800	x164
887D	Ratings and Reality Shows data structures, two pointers	2400	x483
887C	Solution for Cube brute force, implementation	1500	x2904
887B	Cubes for Masha brute force, implementation	1300	x5661
887A	Div. 64 implementation	1000	x11351