Problemset - Codeforces

→ Pay attention

Before contest
Educational Codeforces Round 166 (Rated for Div. 2)
28:56:05
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
68C	Synchrophasotron brute force	2200	x305
68B	Energy exchange binary search	1600	x4155
68A	Irrational problem implementation, number theory	1100	x4825
67E	Save the City! geometry	2500	x313
67D	Optical Experiment binary search, data structures, dp	1900	x1345
67C	Sequence of Balls dp	2600	x630
67B	Restoration of the Permutation greedy	1800	x756
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2061
66E	Petya and Post data structures, dp	2000	x687
66D	Petya and His Friends constructive algorithms, math, number theory	1700	x3062
66C	Petya and File System data structures, implementation	1800	x998
66B	Petya and Countryside brute force, implementation	1100	x19601
66A	Petya and Java implementation, strings	1300	x6233
65E	Harry Potter and Moving Staircases dfs and similar, implementation	2900	x85
65D	Harry Potter and the Sorting Hat brute force, dfs and similar, hashing	2200	x421
65C	Harry Potter and the Golden Snitch binary search, geometry	2100	x773
65B	Harry Potter and the History of Magic brute force, greedy, implementation	1700	x1322
65A	Harry Potter and Three Spells implementation, math	1800	x1786
64I	Sort the Table *special problem, sortings	2400	x85
64H	Table Bowling *special problem, sortings	2300	x111
64G	Path Canonization *special problem	2200	x117
64F	Domain *special problem, expression parsing	2000	x176
64E	Prime Segment *special problem, brute force, math, number theory	1800	x235
64D	Presents *special problem, greedy	1800	x282
64C	Table *special problem, greedy, implementation, math	1600	x332
64B	Expression *special problem, expression parsing	1500	x1000
64A	Factorial *special problem, implementation	1300	x2713
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x717
63D	Dividing Island constructive algorithms	1900	x1226
63C	Bulls and Cows brute force, implementation	1700	x1637
63B	Settlers' Training implementation	1200	x4722
63A	Sinking Ship implementation, sortings, strings	900	x10927
62E	World Evil dp, flows	2700	x222
62D	Wormhouse dfs and similar, graphs	2300	x350
62C	Inquisition geometry, implementation, sortings	2300	x247
62B	Tyndex.Brome binary search, implementation	1800	x1263
62A	A Student's Dream greedy, math	1300	x3379
61E	Enemy is weak data structures, trees	1900	x10191
61D	Eternal Victory dfs and similar, graphs, greedy, shortest paths, trees	1800	x6280
61C	Capture Valerian math	2000	x695
61B	Hard Work strings	1300	x3793
61A	Ultra-Fast Mathematician implementation	800	x104451
60E	Mushroom Gnomes math, matrices	2600	x317
60D	Savior brute force, dsu, math	2500	x397
60C	Mushroom Strife brute force, dfs and similar	2100	x552
60B	Serial Time! dfs and similar, dsu	1400	x4457
60A	Where Are My Flakes? implementation, two pointers	1300	x3537
59E	Shortest Path graphs, shortest paths	2000	x3156
59D	Team Arrangement constructive algorithms, greedy, implementation	2000	x606
59C	Title expression parsing	1600	x2016
59B	Fortune Telling implementation, number theory	1200	x6708
59A	Word implementation, strings	800	x163722
58E	Expression dp	2400	x349
58D	Calendar greedy, strings	2000	x714
58C	Trees brute force	1800	x1972
58B	Coins greedy	1300	x11856
58A	Chat room greedy, strings	1000	x123108
57E	Chess math, shortest paths	3000	x250
57D	Journey dp, math	2500	x330
57C	Array combinatorics, math	1900	x2345
57B	Martian Architecture implementation	1600	x989
57A	Square Earth? dfs and similar, greedy, implementation	1300	x2820
56E	Domino Principle binary search, data structures, sortings	2200	x2226
56D	Changing a String dp	2100	x1536
56C	Corporation Mail data structures, expression parsing, implementation	1700	x1120
56B	Spoilt Permutation implementation	1300	x3630
56A	Bar implementation	1000	x8356
55E	Very simple problem geometry, two pointers	2500	x678
55D	Beautiful numbers dp, number theory	2500	x3620
55C	Pie or die games	1900	x1591
55B	Smallest number brute force	1600	x2650
55A	Flea travel implementation, math	1200	x3344
54E	Vacuum Сleaner geometry	2700	x187
54D	Writing a Song brute force, dp, strings	2100	x511
54C	First Digit Law dp, math, probabilities	2000	x1248
54B	Cutting Jigsaw Puzzle hashing, implementation	1800	x740
54A	Presents implementation	1300	x2011
53E	Dead Ends bitmasks, dp	2500	x907
53D	Physical Education sortings	1500	x1942
53C	Little Frog constructive algorithms	1200	x6235
53B	Blog Photo binary search, implementation	1700	x1370
53A	Autocomplete implementation	1100	x4855
52C	Circular RMQ data structures	2200	x8268
52B	Right Triangles combinatorics	1600	x1983
52A	123-sequence implementation	900	x8348
51F	Caterpillar dfs and similar, dp, graphs, trees	2800	x548
51E	Pentagon combinatorics, graphs, matrices	2400	x368
51D	Geometrical problem implementation	2200	x419
51C	Three Base Stations binary search, greedy	1800	x1824
51B	bHTML Tables Analisys expression parsing	1700	x850
51A	Cheaterius's Problem implementation	1300	x1785
50E	Square Equation Roots math	2300	x347
50D	Bombing binary search, dp, probabilities	2100	x597
50C	Happy Farm 5 geometry	2000	x728
50B	Choosing Symbol Pairs strings	1500	x5552
50A	Domino piling greedy, math	800	x230792
49E	Common ancestor dp	2300	x650
49D	Game brute force, dp, implementation	1800	x1837
49C	Disposition constructive algorithms, math	1700	x1648
49B	Sum math	1500	x2398