Problemset - Codeforces

→ Pay attention

Before contest
Pinely Round 4 (Div. 1 + Div. 2)
21:39:15
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
685C	Optimal Point binary search, math	2900	x577
683J	The Hero with Bombs *special problem	3000	x40
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x313
671D	Roads in Yusland data structures, dp, greedy	2900	x1130
671C	Ultimate Weirdness of an Array data structures, number theory	2800	x679
666D	Chain Reaction brute force, geometry	3000	x276
652F	Ants on a Circle constructive algorithms, math	2800	x536
643F	Bears and Juice dp, math, meet-in-the-middle	2900	x697
643D	Bearish Fanpages	2900	x312
641F	Little Artem and 2-SAT	3000	x185
639E	Bear and Paradox binary search, greedy, math, sortings	2800	x574
633G	Yash And Trees bitmasks, data structures, dfs and similar, math, number theory	2800	x768
627E	Orchestra two pointers	3000	x547
625E	Frog Fights data structures, greedy	2800	x326
623C	Electric Charges binary search, dp	2900	x463
620F	Xors on Segments data structures, strings, trees	2800	x718
618F	Double Knapsack constructive algorithms, two pointers	3000	x1346
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x2811
611G	New Year and Cake geometry, two pointers	2900	x431
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1213
603D	Ruminations on Ruminants geometry, math	2900	x340
601E	A Museum Robbery data structures, dp	2800	x854
600F	Edge coloring of bipartite graph graphs	2800	x761
598F	Cut Length geometry	2900	x362
587F	Duff is Mad data structures, strings	3000	x1013
587E	Duff as a Queen data structures	2900	x695
585E	Present for Vitalik the Philatelist combinatorics, math, number theory	2900	x1055
582E	Boolean Function bitmasks, dp, expression parsing	3000	x482
581E	Kojiro and Furrari dp, greedy	2800	x190
575I	Robots protection data structures	2800	x432
575E	Spectator Riots geometry	2800	x282
573D	Bear and Cavalry data structures, divide and conquer, dp	3000	x459
568E	Longest Increasing Subsequence data structures, dp	3000	x585
568D	Sign Posts brute force, geometry, math	2800	x306
566C	Logistical Questions dfs and similar, divide and conquer, trees	3000	x712
559E	Gerald and Path dp, sortings	3000	x870
559D	Randomizer combinatorics, geometry, probabilities	2800	x430
555E	Case of Computer Network dfs and similar, graphs, trees	2800	x2313
549F	Yura and Developers data structures, divide and conquer	2800	x858
547E	Mike and Friends data structures, string suffix structures, strings, trees	2800	x1994
536D	Tavas in Kansas dp, games	2900	x715
533D	Landmarks data structures, dp	3000	x220
533A	Berland Miners binary search, data structures, dfs and similar, greedy, trees	3000	x381
526F	Pudding Monsters data structures, divide and conquer	3000	x2412
521D	Shop greedy	2800	x1532
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1246
513F2	Scaygerboss flows	2800	x336
512E	Fox And Polygon constructive algorithms, divide and conquer	2900	x507
512D	Fox And Travelling dp, trees	2900	x949
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x712
505E	Mr. Kitayuta vs. Bamboos binary search, greedy	2900	x1358
504E	Misha and LCP on Tree binary search, dfs and similar, hashing, string suffix structures, trees	3000	x891
497E	Subsequences Return dp, matrices	2900	x284
497D	Gears brute force, geometry, math	2900	x226
493E	Vasya and Polynomial math	2800	x481
480E	Parking Lot data structures, divide and conquer	2800	x530
478E	Wavy numbers brute force, dfs and similar, meet-in-the-middle, sortings	2900	x219
475F	Meta-universe data structures	2900	x227
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x396
472E	Design Tutorial: Learn from a Game constructive algorithms, implementation	2800	x131
464E	The Classic Problem data structures, graphs, shortest paths	3000	x1402
461E	Appleman and a Game binary search, shortest paths, strings	3000	x370
461D	Appleman and Complicated Task dsu, math	2800	x361
457E	Flow Optimality constructive algorithms, flows, math	3000	x95
455E	Function data structures	2900	x670
453D	Little Pony and Elements of Harmony dp, matrices	3000	x464
449E	Jzzhu and Squares dp, math, number theory	2900	x285
446D	DZY Loves Games math, matrices, probabilities	2800	x388
436F	Banners brute force, data structures, dp	3000	x374
436D	Pudding Monsters dp	2800	x323
434E	Furukawa Nagisa's Tree binary search, divide and conquer, sortings, trees	3000	x258
434D	Nanami's Power Plant flows	2900	x406
429E	Points and Segments graphs	3000	x839
418D	Big Problems for Organizers data structures, graphs, trees	2800	x474
406E	Hamming Triples implementation, math, two pointers	2800	x233
403E	Two Rooted Trees data structures, implementation, trees	2900	x205
377E	Cookie Clicker dp, geometry	2800	x449
375E	Red and Black Tree dp, implementation, math	3000	x404
372E	Drawing Circles is Fun combinatorics, geometry	3000	x170
364E	Empty Rectangles divide and conquer, two pointers	3000	x539
364D	Ghd brute force, math, probabilities	2900	x2013
360E	Levko and Game graphs, greedy, shortest paths	2800	x686
356E	Xenia and String Problem dp, hashing, implementation, string suffix structures, strings	3000	x408
354D	Transferring Pyramid dp	2900	x460
348E	Pilgrims dfs and similar, dp, trees	2800	x435
346E	Doodle Jump math, number theory	3000	x260
343E	Pumping Stations brute force, dfs and similar, divide and conquer, flows, graphs, greedy, trees	2900	x702
341E	Candies Game constructive algorithms, greedy	3000	x441
338D	GCD Table chinese remainder theorem, math, number theory	2900	x1108
335F	Buy One, Get One Free dp, greedy	3000	x508
335E	Counting Skyscrapers dp, math, probabilities	2800	x219
331E1	Deja Vu constructive algorithms, graphs, implementation	2900	x164
331D3	Escaping on Beaveractor data structures, implementation, trees	3000	x175
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x765
325D	Reclamation dsu	2900	x522
321D	Ciel and Flipboard dp, greedy, math	2900	x530
319E	Ping-Pong data structures	3000	x642
319D	Have You Ever Heard About the Word? greedy, hashing, string suffix structures, strings	2800	x634
314E	Sereja and Squares dp	2900	x366
309E	Sheep binary search, greedy	2900	x220