Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
18:47:55
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Problems

#	Name
1795G	Removal Sequences bitmasks, dfs and similar, graphs	2700	x691
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1141
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x2092
1795D	Triangle Coloring combinatorics, math	1600	x9495
1795C	Tea Tasting binary search, data structures, implementation	1500	x12982
1795B	Ideal Point brute force, geometry, greedy	900	x22320
1795A	Two Towers brute force, implementation, strings	800	x23764
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1127
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3652
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x14408
1794B	Not Dividing constructive algorithms, greedy, math	900	x23765
1794A	Prefix and Suffix Array strings	800	x17312
1793F	Rebrending brute force, data structures, divide and conquer, implementation	2600	x1420
1793E	Velepin and Marketing binary search, data structures, dp, greedy, sortings, two pointers	2600	x1115
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6333
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x21438
1793B	Fedya and Array constructive algorithms, math	1100	x15997
1793A	Yet Another Promotion greedy, math	800	x18161
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x399
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs	2700	x747
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1412
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6386
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x14448
1792B	Stand-up Comedian greedy, math	1200	x21771
1792A	GamingForces greedy, sortings	800	x28439
1791G2	Teleporters (Hard Version) binary search, greedy, sortings	1900	x4893
1791G1	Teleporters (Easy Version) greedy, sortings	1100	x23698
1791F	Range Update Point Query binary search, brute force, data structures	1500	x12796
1791E	Negatives and Positives dp, greedy, sortings	1100	x29699
1791D	Distinct Split brute force, greedy, strings	1000	x32290
1791C	Prepend and Append implementation, two pointers	800	x48086
1791B	Following Directions geometry, implementation	800	x45751
1791A	Codeforces Checking implementation, strings	800	x63799
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1150
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees	2100	x3409
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x15447
1790D	Matryoshkas data structures, greedy, sortings	1200	x21172
1790C	Premutation brute force, implementation, math	1000	x24414
1790B	Taisia and Dice greedy, greedy, math	800	x27679
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x37605
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x734
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x834
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1713
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8715
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x16326
1789A	Serval and Mocha's Array brute force, math, number theory	800	x19939
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x883
1788E	Sum Over Zero data structures, dfs and similar, dp	2200	x2746
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3997
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x17549
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x20387
1788A	One and Two brute force, implementation, math	800	x32421
1787I	Treasure Hunt data structures, divide and conquer, two pointers	3400	x253
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x239
1787G	Colorful Tree Again brute force, data structures, trees	3000	x448
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x694
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2385
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation	1900	x3448
1787C	Remove the Bracket dp, greedy, math	1600	x7219
1787B	Number Factorization greedy, math, number theory	1100	x13469
1787A	Exponential Equation constructive algorithms, math	800	x19337
1786B	Cake Assembly Line brute force, sortings	1300	x9107
1786A2	Alternating Deck (hard version) implementation	800	x11486
1786A1	Non-alternating Deck (easy version) implementation	800	x14130
1784F	Minimums or Medians	3400	x255
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x347
1784D	Wooden Spoon combinatorics, dp	2400	x1050
1784C	Monsters (hard version) data structures, greedy	2200	x1696
1784B	Letter Exchange constructive algorithms	1900	x3378
1784A	Monsters (easy version) brute force, greedy	1000	x15382
1783G	Weighed Tree Radius data structures, divide and conquer, implementation, trees	2800	x485
1783F	Double Sort II dfs and similar, flows, graph matchings, graphs	2500	x1056
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2147
1783D	Different Arrays brute force, dp, implementation	2000	x4549
1783C	Yet Another Tournament binary search, greedy, sortings	1700	x9493
1783B	Matrix of Differences constructive algorithms, math	1100	x18075
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x31441
1781H2	Window Signals (hard version)	3500	x98
1781H1	Window Signals (easy version)	3200	x120
1781G	Diverse Coloring constructive algorithms, trees	3200	x235
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x935
1781E	Rectangle Shrinking binary search, brute force, data structures, greedy, implementation, two pointers	2300	x1314
1781D	Many Perfect Squares brute force, math, number theory	1800	x5598
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7847
1781B	Going to the Cinema brute force, greedy, sortings	1000	x13654
1781A	Parallel Projection geometry, math	800	x15179
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x759
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1563
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1479
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x5060
1780B	GCD Partition brute force, greedy, math, number theory	1100	x18705
1780A	Hayato and School constructive algorithms, greedy	800	x21850
1779H	Olympic Team Building brute force, meet-in-the-middle	3500	x145
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x331
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1276
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1807
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x8050
1779C	Least Prefix Sum data structures, greedy	1600	x12637
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23810
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x23270