Problemset - Codeforces

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Educational Codeforces Round 170 (Rated for Div. 2)
13 days

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Difficulty: —

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Problems

#	Name
64I	Sort the Table *special problem, sortings	2400	x88
64H	Table Bowling *special problem, sortings	2300	x113
64G	Path Canonization *special problem	2200	x120
64F	Domain *special problem, expression parsing	2000	x180
64E	Prime Segment *special problem, brute force, math, number theory	1800	x240
64D	Presents *special problem, greedy	1800	x287
64C	Table *special problem, greedy, implementation, math	1600	x337
64B	Expression *special problem, expression parsing	1500	x1015
64A	Factorial *special problem, implementation	1300	x2802
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x759
63D	Dividing Island constructive algorithms	1900	x1262
63C	Bulls and Cows brute force, implementation	1700	x1690
63B	Settlers' Training implementation	1200	x4823
63A	Sinking Ship implementation, sortings, strings	900	x11349
62E	World Evil dp, flows	2700	x230
62D	Wormhouse dfs and similar, graphs	2300	x363
62C	Inquisition geometry, implementation, sortings	2300	x251
62B	Tyndex.Brome binary search, implementation	1800	x1288
62A	A Student's Dream greedy, math	1300	x3444
61E	Enemy is weak data structures, trees	1900	x10935
61D	Eternal Victory dfs and similar, graphs, greedy, shortest paths, trees	1800	x6532
61C	Capture Valerian math	2000	x714
61B	Hard Work strings	1300	x3863
61A	Ultra-Fast Mathematician implementation	800	x110089
60E	Mushroom Gnomes math, matrices	2600	x325
60D	Savior brute force, dsu, math	2500	x408
60C	Mushroom Strife brute force, dfs and similar	2100	x565
60B	Serial Time! dfs and similar, dsu	1400	x4581
60A	Where Are My Flakes? implementation, two pointers	1300	x3613
59E	Shortest Path graphs, shortest paths	2000	x3400
59D	Team Arrangement constructive algorithms, greedy, implementation	2000	x632
59C	Title expression parsing	1600	x2093
59B	Fortune Telling implementation, number theory	1200	x6866
59A	Word implementation, strings	800	x174172
58E	Expression dp	2400	x361
58D	Calendar greedy, strings	2000	x731
58C	Trees brute force	1800	x2027
58B	Coins greedy	1300	x12188
58A	Chat room greedy, strings	1000	x129102
57E	Chess math, shortest paths	3000	x261
57D	Journey dp, math	2500	x337
57C	Array combinatorics, math	1900	x2581
57B	Martian Architecture implementation	1600	x1014
57A	Square Earth? dfs and similar, greedy, implementation	1300	x2900
56E	Domino Principle binary search, data structures, sortings	2200	x2318
56D	Changing a String dp	2100	x1626
56C	Corporation Mail data structures, expression parsing, implementation	1700	x1156
56B	Spoilt Permutation implementation	1300	x3724
56A	Bar implementation	1000	x8622
55E	Very simple problem geometry, two pointers	2500	x700
55D	Beautiful numbers dp, number theory	2500	x3877
55C	Pie or die games	1900	x1638
55B	Smallest number brute force	1600	x2843
55A	Flea travel implementation, math	1200	x3405
54E	Vacuum Сleaner geometry	2700	x191
54D	Writing a Song brute force, dp, strings	2100	x536
54C	First Digit Law dp, math, probabilities	2000	x1311
54B	Cutting Jigsaw Puzzle hashing, implementation	1800	x763
54A	Presents implementation	1300	x2068
53E	Dead Ends bitmasks, dp	2500	x976
53D	Physical Education sortings	1500	x2022
53C	Little Frog constructive algorithms	1200	x6428
53B	Blog Photo binary search, implementation	1700	x1407
53A	Autocomplete implementation	1100	x5047
52C	Circular RMQ data structures	2200	x8873
52B	Right Triangles combinatorics	1600	x2044
52A	123-sequence implementation	900	x8669
51F	Caterpillar dfs and similar, dp, graphs, trees	2800	x609
51E	Pentagon combinatorics, graphs, matrices	2400	x405
51D	Geometrical problem implementation	2200	x480
51C	Three Base Stations binary search, greedy	1800	x1945
51B	bHTML Tables Analisys expression parsing	1700	x872
51A	Cheaterius's Problem implementation	1300	x1824
50E	Square Equation Roots math	2300	x359
50D	Bombing binary search, dp, probabilities	2100	x623
50C	Happy Farm 5 geometry	2000	x766
50B	Choosing Symbol Pairs strings	1500	x5669
50A	Domino piling greedy, math	800	x244467
49E	Common ancestor dp	2300	x665
49D	Game brute force, dp, implementation	1800	x1903
49C	Disposition constructive algorithms, math	1700	x1687
49B	Sum math	1500	x2475
49A	Sleuth implementation	800	x13394
48H	Black and White constructive algorithms	2800	x147
48G	Galaxy Union dp, trees, two pointers	2700	x271
48F	Snow sellers greedy, sortings	2800	x156
48E	Ivan the Fool VS Gorynych the Dragon dp, games, graphs	2100	x582
48D	Permutations greedy	1500	x2505
48C	The Race math	1800	x781
48B	Land Lot brute force, implementation	1200	x2678
48A	Rock-paper-scissors implementation, schedules	900	x6165
47E	Cannon data structures, geometry, sortings	2200	x364
47D	Safe brute force	2200	x769
47C	Crossword implementation	2000	x786
47B	Coins implementation	1200	x13909
47A	Triangular numbers brute force, math	800	x14994
46G	Emperor's Problem geometry	2500	x115
46F	Hercule Poirot Problem dsu, graphs	2300	x324
46E	Comb data structures, dp	1900	x956
46D	Parking Lot data structures, implementation	1800	x979