Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Codeforces Round 978 (Div. 2)
6 days

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1354A	Alarm Clock math	900	x23794
1353F	Decreasing Heights brute force, dp	2200	x3329
1353E	K-periodic Garland brute force, dp, greedy	1900	x7150
1353D	Constructing the Array constructive algorithms, data structures, sortings	1600	x18119
1353C	Board Moves math	1000	x35459
1353B	Two Arrays And Swaps greedy, sortings	800	x49687
1353A	Most Unstable Array constructive algorithms, greedy, math	800	x40690
1352G	Special Permutation constructive algorithms	1600	x21241
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x17147
1352E	Special Elements brute force, implementation, two pointers	1500	x20561
1352D	Alice, Bob and Candies implementation	1300	x26209
1352C	K-th Not Divisible by n binary search, math	1200	x54623
1352B	Same Parity Summands constructive algorithms, math	1200	x37660
1352A	Sum of Round Numbers implementation, math	800	x79501
1351C	Skier data structures, implementation	1400	x8558
1351B	Square? brute force, implementation, math	900	x16997
1351A	A+B (Trial Problem) implementation	800	x23918
1350B	Orac and Models dp, math, number theory	1400	x22191
1350A	Orac and Factors math	900	x26087
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x113
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x412
1349E	Slime and Hats constructive algorithms, dp, greedy	3500	x92
1349D	Slime and Biscuits math, probabilities	3200	x905
1349C	Orac and Game of Life dfs and similar, graphs, implementation, shortest paths	2000	x4525
1349B	Orac and Medians constructive algorithms, greedy, math	2000	x8154
1349A	Orac and LCM data structures, math, number theory	1600	x17101
1348F	Phoenix and Memory data structures, dfs and similar, graphs, greedy	2600	x813
1348E	Phoenix and Berries brute force, dp, greedy, math	2400	x2231
1348D	Phoenix and Science binary search, constructive algorithms, greedy, implementation, math	1900	x8854
1348C	Phoenix and Distribution constructive algorithms, greedy, sortings, strings	1600	x14623
1348B	Phoenix and Beauty constructive algorithms, data structures, greedy, sortings	1400	x25350
1348A	Phoenix and Balance greedy, math	800	x39553
1346I	Pac-Man 2.0 *special problem, dp	2900	x49
1346H	Game with Segments *special problem, data structures, games	2700	x50
1346G	Two IP Cameras *special problem, math, number theory	2300	x135
1346F	Dune II: Battle For Arrakis *special problem, data structures, greedy, math	2000	x228
1346E	Magic Tricks *special problem, dp, graphs	1700	x378
1346D	Constructing the Dungeon *special problem, graphs, greedy	1600	x502
1346C	Spring Cleaning *special problem, greedy, sortings	1600	x605
1346B	Boot Camp *special problem, greedy	1400	x1207
1346A	Color Revolution *special problem, math	1000	x2033
1345B	Card Constructions binary search, brute force, dp, math	1100	x26445
1345A	Puzzle Pieces math	800	x24171
1344F	Piet's Palette matrices	3200	x454
1344E	Train Tracks data structures, trees	3100	x459
1344D	Résumé Review binary search, greedy, math	2700	x1163
1344C	Quantifier Question dfs and similar, dp, graphs, math	2600	x1861
1344B	Monopole Magnets constructive algorithms, dfs and similar, dsu, graphs	2000	x6063
1344A	Hilbert's Hotel math, number theory, sortings	1600	x15646
1343F	Restore the Permutation by Sorted Segments brute force, constructive algorithms, data structures, greedy, implementation	2400	x1268
1343E	Weights Distributing brute force, graphs, greedy, shortest paths, sortings	2100	x5172
1343D	Constant Palindrome Sum brute force, data structures, greedy, two pointers	1700	x12672
1343C	Alternating Subsequence dp, greedy, two pointers	1200	x38410
1343B	Balanced Array constructive algorithms, math	800	x56541
1343A	Candies brute force, math	900	x47918
1342F	Make It Ascending bitmasks, brute force, dp	3000	x715
1342E	Placing Rooks combinatorics, fft, math	2300	x3083
1342D	Multiple Testcases binary search, constructive algorithms, data structures, greedy, sortings, two pointers	1900	x6098
1342C	Yet Another Counting Problem math, number theory	1600	x14040
1342B	Binary Period constructive algorithms, strings	1100	x23695
1342A	Road To Zero greedy, math	1000	x40387
1341B	Nastya and Door greedy, implementation	1300	x19683
1341A	Nastya and Rice math	900	x29044
1340F	Nastya and CBS brute force, data structures, hashing	3300	x504
1340E	Nastya and Bees graphs, interactive, probabilities	3000	x53
1340D	Nastya and Time Machine constructive algorithms, dfs and similar, graphs, trees	2600	x991
1340C	Nastya and Unexpected Guest dfs and similar, dp, graphs, shortest paths	2400	x2242
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7853
1340A	Nastya and Strange Generator brute force, data structures, greedy, implementation	1500	x13419
1339B	Sorted Adjacent Differences constructive algorithms, sortings	1200	x26399
1339A	Filling Diamonds brute force, dp, implementation, math	900	x32045
1338E	JYPnation graphs	3500	x241
1338D	Nested Rubber Bands constructive algorithms, dfs and similar, dp, math, trees	2700	x1016
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x3220
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8468
1338A	Powered Addition greedy, math	1500	x24006
1337B	Kana and Dragon Quest game greedy, implementation, math	900	x34201
1337A	Ichihime and Triangle constructive algorithms, math	800	x38278
1336F	Journey data structures, divide and conquer, graphs, trees	3500	x220
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x304
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x685
1336D	Yui and Mahjong Set constructive algorithms, interactive	3200	x474
1336C	Kaavi and Magic Spell dp, strings	2200	x3598
1336B	Xenia and Colorful Gems binary search, greedy, math, sortings, two pointers	1700	x11376
1336A	Linova and Kingdom dfs and similar, dp, greedy, sortings, trees	1600	x20422
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x2187
1335E2	Three Blocks Palindrome (hard version) brute force, data structures, dp, two pointers	1800	x8352
1335E1	Three Blocks Palindrome (easy version) binary search, brute force, data structures, dp, two pointers	1700	x10852
1335D	Anti-Sudoku constructive algorithms, implementation	1300	x27428
1335C	Two Teams Composing binary search, greedy, implementation, sortings	1100	x34646
1335B	Construct the String constructive algorithms	900	x38450
1335A	Candies and Two Sisters math	800	x84434
1334G	Substring Search bitmasks, brute force, fft	2900	x371
1334F	Strange Function binary search, data structures, dp, greedy	2500	x1313
1334E	Divisor Paths combinatorics, graphs, greedy, math, number theory	2200	x2829
1334D	Minimum Euler Cycle constructive algorithms, graphs, greedy, implementation	1800	x7307
1334C	Circle of Monsters brute force, constructive algorithms, greedy, math	1600	x16621
1334B	Middle Class greedy, sortings	1100	x25870
1334A	Level Statistics implementation, math	1200	x23276
1333F	Kate and imperfection greedy, implementation, math, number theory, sortings, two pointers	2200	x4264