Problemset - Codeforces

→ Pay attention

Before contest
Pinely Round 4 (Div. 1 + Div. 2)
16:08:48
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
475F	Meta-universe data structures	2900	x227
475E	Strongly Connected City 2 dfs and similar	2700	x406
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x396
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x250
472E	Design Tutorial: Learn from a Game constructive algorithms, implementation	2800	x131
471E	MUH and Lots and Lots of Segments data structures, dsu	2700	x81
468E	Permanent dp, graph matchings, math, meet-in-the-middle	3100	x312
468D	Tree graph matchings	3100	x359
468C	Hack it! binary search, constructive algorithms, math	2500	x2333
467D	Fedor and Essay dfs and similar, dp, graphs, hashing, strings	2400	x1786
464E	The Classic Problem data structures, graphs, shortest paths	3000	x1402
464D	World of Darkraft - 2 dp, probabilities	2700	x663
461E	Appleman and a Game binary search, shortest paths, strings	3000	x370
461D	Appleman and Complicated Task dsu, math	2800	x361
460E	Roland and Rose brute force, geometry, math, sortings	2700	x340
457F	An easy problem about trees dp, games, greedy, trees	3200	x105
457E	Flow Optimality constructive algorithms, flows, math	3000	x95
457D	Bingo! combinatorics, math, probabilities	2700	x276
455E	Function data structures	2900	x670
455D	Serega and Fun data structures	2700	x2866
453E	Little Pony and Lord Tirek data structures	3100	x697
453D	Little Pony and Elements of Harmony dp, matrices	3000	x464
452F	Permutation data structures, divide and conquer, hashing	2700	x1422
452E	Three strings data structures, dsu, string suffix structures, strings	2400	x1052
449E	Jzzhu and Squares dp, math, number theory	2900	x285
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4279
449C	Jzzhu and Apples constructive algorithms, number theory	2500	x2228
446E	DZY Loves Bridges math, matrices	3100	x122
446D	DZY Loves Games math, matrices, probabilities	2800	x388
446C	DZY Loves Fibonacci Numbers data structures, math, number theory	2400	x3238
444E	DZY Loves Planting binary search, dsu, trees	2700	x750
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x760
444C	DZY Loves Colors data structures	2400	x2856
442E	Gena and Second Distance geometry	3100	x172
442D	Adam and Tree data structures, trees	2600	x969
442C	Artem and Array data structures, greedy	2500	x1722
441E	Valera and Number bitmasks, dp, math, probabilities	2400	x685
438E	The Child and Binary Tree combinatorics, divide and conquer, fft, number theory	3100	x1846
437E	The Child and Polygon dp, geometry	2500	x699
436F	Banners brute force, data structures, dp	3000	x374
436E	Cardboard Box data structures, greedy	2600	x1301
436D	Pudding Monsters dp	2800	x323
435E	Special Graph	2500	x236
434E	Furukawa Nagisa's Tree binary search, divide and conquer, sortings, trees	3000	x258
434D	Nanami's Power Plant flows	2900	x406
433E	Tachibana Kanade's Tofu dp	2500	x474
429E	Points and Segments graphs	3000	x839
425E	Sereja and Sets dp	2500	x611
424E	Colored Jenga dfs and similar, dp, probabilities	2500	x130
420E	Playing the ball geometry	2600	x214
418E	Tricky Password data structures	3100	x300
418D	Big Problems for Organizers data structures, graphs, trees	2800	x474
417E	Square Table constructive algorithms, math, probabilities	2400	x787
416E	President's Path dp, graphs, shortest paths	2500	x1399
416D	Population Size greedy, implementation, math	2400	x936
414E	Mashmokh's Designed Problem data structures	3200	x200
409I	Feed the Golorp *special problem	2400	x118
407E	k-d-sequence data structures	3100	x698
407D	Largest Submatrix 3 dp, hashing	2700	x556
407C	Curious Array brute force, combinatorics, implementation, math	2500	x963
406E	Hamming Triples implementation, math, two pointers	2800	x233
403E	Two Rooted Trees data structures, implementation, trees	2900	x205
401E	Olympic Games math	2500	x168
388E	Fox and Meteor Shower geometry	3100	x120
388D	Fox and Perfect Sets math	2700	x441
383E	Vowels combinatorics, divide and conquer, dp	2700	x2942
383B	Volcanoes binary search, implementation, sortings, two pointers	2500	x660
382E	Ksenia and Combinatorics combinatorics, dp	2600	x371
380E	Sereja and Dividing data structures	2600	x297
380D	Sereja and Cinema combinatorics, math	2500	x459
380B	Sereja and Tree graphs, implementation	2400	x531
379G	New Year Cactus dp	3100	x141
379F	New Year Tree data structures, divide and conquer, trees	2400	x2210
379E	New Year Tree Decorations geometry, schedules, sortings	2500	x338
377E	Cookie Clicker dp, geometry	2800	x449
377D	Developing Game data structures	2400	x1129
375E	Red and Black Tree dp, implementation, math	3000	x404
375D	Tree and Queries data structures, dfs and similar, trees	2400	x6481
375C	Circling Round Treasures bitmasks, shortest paths	2600	x478
374E	Inna and Babies binary search, data structures, dsu, geometry, implementation	2600	x179
372E	Drawing Circles is Fun combinatorics, geometry	3000	x170
372D	Choosing Subtree is Fun binary search, data structures, dfs and similar, trees, two pointers	2600	x956
370E	Summer Reading dp, greedy	2500	x235
367E	Sereja and Intervals combinatorics, dp	2700	x1100
367D	Sereja and Sets bitmasks, dfs and similar	2400	x650
364E	Empty Rectangles divide and conquer, two pointers	3000	x539
364D	Ghd brute force, math, probabilities	2900	x2013
363E	Two Circles brute force, data structures, implementation	2500	x199
360E	Levko and Game graphs, greedy, shortest paths	2800	x686
360D	Levko and Sets number theory	2600	x399
360C	Levko and Strings combinatorics, dp	2500	x1099
359E	Neatness constructive algorithms, dfs and similar	2400	x463
356E	Xenia and String Problem dp, hashing, implementation, string suffix structures, strings	3000	x408
356D	Bags and Coins bitmasks, constructive algorithms, dp, greedy	2700	x944
354D	Transferring Pyramid dp	2900	x460
354B	Game with Strings bitmasks, dp, games	2400	x451
351D	Jeff and Removing Periods data structures	2700	x1035
351C	Jeff and Brackets dp, matrices	2500	x543
350D	Looking for Owls binary search, data structures, geometry, hashing, sortings	2400	x260
348E	Pilgrims dfs and similar, dp, trees	2800	x435