Problemset - Codeforces

→ Pay attention

Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
4 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
534E	Berland Local Positioning System constructive algorithms, greedy, hashing, implementation	2400	x351
534D	Handshakes binary search, constructive algorithms, data structures, greedy	1900	x2419
534C	Polycarpus' Dice math	1600	x5037
534B	Covered Path dp, greedy, math	1400	x10339
534A	Exam constructive algorithms, implementation, math	1100	x12325
533F	Encoding hashing, string suffix structures, strings	2400	x906
533E	Correcting Mistakes constructive algorithms, dp, greedy, hashing, strings, two pointers	1800	x2271
533D	Landmarks data structures, dp	3000	x235
533C	Board Game games, greedy, implementation, math	1700	x2201
533B	Work Group dfs and similar, dp, graphs, strings, trees	2000	x2443
533A	Berland Miners binary search, data structures, dfs and similar, greedy, trees	3000	x392
530I	Different variables *special problem	2500	x47
530H	Points in triangle *special problem, geometry	2100	x123
530G	Levenshtein distance *special problem	2100	x159
530F	Jumping frogs *special problem	2100	x107
530E	Sum and product *special problem	1700	x308
530D	Set subtraction *special problem	1600	x452
530C	Diophantine equation *special problem	1500	x556
530B	String inside out *special problem	1600	x542
530A	Quadratic equation *special problem	1500	x675
529B	Group Photo 2 (online mirror version) brute force, greedy, sortings	1900	x877
528E	Triangles 3000 geometry, sortings	3100	x219
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2248
527E	Data Center Drama dfs and similar, graphs	2600	x2006
527D	Clique Problem data structures, dp, greedy, implementation, sortings	1800	x4807
527C	Glass Carving binary search, data structures, implementation	1500	x6945
527B	Error Correct System greedy	1500	x3887
527A	Playing with Paper implementation, math	1100	x14502
526G	Spiders Evil Plan greedy, trees	3300	x754
526F	Pudding Monsters data structures, divide and conquer	3000	x2604
526E	Transmitting Levels dp, implementation	2400	x1085
526D	Om Nom and Necklace hashing, string suffix structures, strings	2200	x2182
526C	Om Nom and Candies brute force, greedy, math	2000	x2525
526B	Om Nom and Dark Park dfs and similar, greedy, implementation	1400	x4505
526A	King of Thieves brute force, implementation	1300	x4783
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x3327
525D	Arthur and Walls constructive algorithms, data structures, graphs, greedy, shortest paths	2400	x1791
525C	Ilya and Sticks greedy, math, sortings	1600	x5828
525B	Pasha and String constructive algorithms, greedy, math, strings	1400	x9445
525A	Vitaliy and Pie greedy, hashing, strings	1100	x14750
524F	And Yet Another Bracket Sequence data structures, greedy, hashing, string suffix structures, strings	2700	x535
524E	Rooks and Rectangles data structures, sortings	2400	x1213
524D	Social Network greedy, two pointers	2100	x956
524C	The Art of Dealing with ATM binary search, sortings	1900	x2058
524B	Фото на память - 2 (round version) dp, greedy	1700	x1464
524A	Возможно, вы знаете этих людей? implementation	1600	x1415
523D	Statistics of Recompressing Videos *special problem, data structures, implementation	1600	x2348
523C	Name Quest *special problem, greedy	1400	x2504
523B	Mean Requests *special problem, implementation	1500	x952
523A	Rotate, Flip and Zoom *special problem, implementation	1200	x2638
522D	Closest Equals *special problem, data structures	2000	x3247
522C	Chicken or Fish? greedy	2100	x722
522B	Photo to Remember *special problem, data structures, dp, implementation	1100	x8946
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x16523
521E	Cycling City dfs and similar, graphs	3100	x1060
521D	Shop greedy	2800	x1619
520E	Pluses everywhere combinatorics, dp, math, number theory	2200	x1883
520D	Cubes games, greedy, implementation	2100	x1566
520C	DNA Alignment math, strings	1500	x4171
520B	Two Buttons dfs and similar, graphs, greedy, implementation, math, shortest paths	1400	x51600
520A	Pangram implementation, strings	800	x99519
519E	A and B and Lecture Rooms binary search, data structures, dfs and similar, dp, trees	2100	x6958
519D	A and B and Interesting Substrings data structures, dp, two pointers	1800	x6400
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19788
519B	A and B and Compilation Errors data structures, implementation, sortings	1100	x39753
519A	A and B and Chess implementation	900	x19061
518F	Pasha and Pipe binary search, brute force, combinatorics, dp, implementation	2300	x380
518E	Arthur and Questions greedy, implementation, math, ternary search	2200	x1004
518D	Ilya and Escalator combinatorics, dp, math, probabilities	1700	x7057
518C	Anya and Smartphone constructive algorithms, data structures, implementation	1600	x6040
518B	Tanya and Postcard greedy, implementation, strings	1400	x8003
518A	Vitaly and Strings constructive algorithms, strings	1600	x9233
516E	Drazil and His Happy Friends math, number theory	3100	x505
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1328
515E	Drazil and Park data structures	2300	x2147
515D	Drazil and Tiles constructive algorithms, greedy	2000	x2867
515C	Drazil and Factorial greedy, math, sortings	1400	x26153
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7468
515A	Drazil and Date math	1000	x20404
514E	Darth Vader and Tree dp, matrices	2200	x1447
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x4494
514C	Watto and Mechanism binary search, data structures, hashing, string suffix structures, strings	2000	x6968
514B	Han Solo and Lazer Gun brute force, data structures, geometry, implementation, math	1400	x20931
514A	Chewbaсca and Number greedy, implementation	1200	x53628
513G3	Inversions problem dp	3100	x265
513G2	Inversions problem dp, probabilities	2400	x662
513G1	Inversions problem brute force, dfs and similar, dp, meet-in-the-middle	1800	x1793
513F2	Scaygerboss flows	2800	x358
513F1	Scaygerboss flows	2700	x324
513E2	Subarray Cuts dp	2700	x600
513E1	Subarray Cuts dp	2600	x496
513D2	Constrained Tree constructive algorithms, data structures	2600	x384
513D1	Constrained Tree dfs and similar	2400	x621
513C	Second price auction bitmasks, probabilities	2000	x1563
513B2	Permutations bitmasks, divide and conquer, math	1800	x2639
513B1	Permutations brute force	1400	x3628
513A	Game constructive algorithms, math	800	x20486
512E	Fox And Polygon constructive algorithms, divide and conquer	2900	x522
512D	Fox And Travelling dp, trees	2900	x983
510E	Fox And Dinner flows	2300	x2211