Problemset - Codeforces

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

→ Pay attention

Before contest
Codeforces Round 974 (Div. 3)
11:27:07
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
475F	Meta-universe data structures	2900	x230
475E	Strongly Connected City 2 dfs and similar	2700	x412
475D	CGCDSSQ brute force, data structures, math	2000	x4819
475C	Kamal-ol-molk's Painting brute force, constructive algorithms, greedy	2100	x784
474F	Ant colony data structures, math, number theory	2100	x8513
474E	Pillars binary search, data structures, dp, sortings, trees	2000	x3298
474D	Flowers dp	1700	x25061
474C	Captain Marmot brute force, geometry	2000	x3107
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x401
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x256
472E	Design Tutorial: Learn from a Game constructive algorithms, implementation	2800	x131
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x5378
471E	MUH and Lots and Lots of Segments data structures, dsu	2700	x81
471D	MUH and Cube Walls string suffix structures, strings	1800	x8010
471C	MUH and House of Cards binary search, brute force, greedy, math	1700	x3552
470H	Array Sorting *special problem	2300	x188
470G	Hamming Distance *special problem	2300	x95
470F	Pairwise Sums *special problem	2300	x105
470E	Chessboard *special problem	1900	x197
470D	Caesar Cipher *special problem	1900	x152
470C	Eval *special problem	1900	x240
470B	Hexakosioihexekontahexaphobia *special problem	1800	x259
468E	Permanent dp, graph matchings, math, meet-in-the-middle	3100	x312
468D	Tree graph matchings	3100	x363
468C	Hack it! binary search, constructive algorithms, math	2500	x2389
468B	Two Sets 2-sat, dfs and similar, dsu, graph matchings, greedy	2000	x4140
467E	Alex and Complicated Task data structures, dp, greedy	2300	x781
467D	Fedor and Essay dfs and similar, dp, graphs, hashing, strings	2400	x1822
467C	George and Job dp, implementation	1700	x14554
466E	Information Graph dfs and similar, dsu, graphs, trees	2100	x2215
466D	Increase Sequence combinatorics, dp	2100	x3169
466C	Number of Ways binary search, brute force, data structures, dp, two pointers	1700	x35924
466B	Wonder Room brute force, math	2000	x4895
464E	The Classic Problem data structures, graphs, shortest paths	3000	x1446
464D	World of Darkraft - 2 dp, probabilities	2700	x667
464C	Substitutes in Number dp	2100	x1847
464B	Restore Cube brute force, geometry	2000	x1707
464A	No to Palindromes! greedy, strings	1700	x5909
463E	Caisa and Tree brute force, dfs and similar, math, number theory, trees	2100	x1597
463D	Gargari and Permutations dfs and similar, dp, graphs, implementation	1900	x6367
463C	Gargari and Bishops greedy, hashing, implementation	1900	x8717
461E	Appleman and a Game binary search, shortest paths, strings	3000	x375
461D	Appleman and Complicated Task dsu, math	2800	x363
461C	Appleman and a Sheet of Paper data structures, implementation	2200	x1331
461B	Appleman and Tree dfs and similar, dp, trees	2000	x5594
460E	Roland and Rose brute force, geometry, math, sortings	2700	x342
460D	Little Victor and Set brute force, constructive algorithms, math	2300	x995
460C	Present binary search, data structures, greedy	1700	x6186
459E	Pashmak and Graph dp, sortings	1900	x5390
459D	Pashmak and Parmida's problem data structures, divide and conquer, sortings	1800	x10025
459C	Pashmak and Buses combinatorics, constructive algorithms, math	1900	x6170
457F	An easy problem about trees dp, games, greedy, trees	3200	x107
457E	Flow Optimality constructive algorithms, flows, math	3000	x96
457D	Bingo! combinatorics, math, probabilities	2700	x278
457C	Elections brute force	2100	x876
457B	Distributed Join greedy	1900	x1129
457A	Golden System math, meet-in-the-middle	1700	x1272
455E	Function data structures	2900	x678
455D	Serega and Fun data structures	2700	x2952
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5707
455B	A Lot of Games dfs and similar, dp, games, implementation, strings, trees	1900	x5932
453E	Little Pony and Lord Tirek data structures	3100	x716
453D	Little Pony and Elements of Harmony dp, matrices	3000	x469
453C	Little Pony and Summer Sun Celebration constructive algorithms, dfs and similar, graphs	2200	x1630
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x4667
453A	Little Pony and Expected Maximum probabilities	1600	x10392
452F	Permutation data structures, divide and conquer, hashing	2700	x1489
452E	Three strings data structures, dsu, string suffix structures, strings	2400	x1061
452D	Washer, Dryer, Folder greedy, implementation	1900	x1500
452C	Magic Trick combinatorics, math, probabilities	2100	x1619
452B	4-point polyline brute force, constructive algorithms, geometry, trees	1800	x1995
451E	Devu and Flowers bitmasks, combinatorics, number theory	2300	x3587
451D	Count Good Substrings math	2000	x4721
451C	Predict Outcome of the Game brute force, implementation, math	1700	x3323
449E	Jzzhu and Squares dp, math, number theory	2900	x285
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4371
449C	Jzzhu and Apples constructive algorithms, number theory	2500	x2253
449B	Jzzhu and Cities graphs, greedy, shortest paths	2000	x8458
449A	Jzzhu and Chocolate greedy, math	1700	x3930
448E	Divisors brute force, dfs and similar, implementation, number theory	2200	x1537
448D	Multiplication Table binary search, brute force	1800	x13942
448C	Painting Fence divide and conquer, dp, greedy	1900	x8154
446E	DZY Loves Bridges math, matrices	3100	x133
446D	DZY Loves Games math, matrices, probabilities	2800	x394
446C	DZY Loves Fibonacci Numbers data structures, math, number theory	2400	x3315
446B	DZY Loves Modification brute force, data structures, greedy	2000	x3573
446A	DZY Loves Sequences dp, implementation, two pointers	1600	x12507
444E	DZY Loves Planting binary search, dsu, trees	2700	x764
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x773
444C	DZY Loves Colors data structures	2400	x2908
444B	DZY Loves FFT probabilities	2300	x1066
444A	DZY Loves Physics greedy, math	1600	x3402
442E	Gena and Second Distance geometry	3100	x172
442D	Adam and Tree data structures, trees	2600	x986
442C	Artem and Array data structures, greedy	2500	x1769
442B	Andrey and Problem greedy, math, probabilities	1800	x5223
442A	Borya and Hanabi bitmasks, brute force, implementation	1700	x2108
441E	Valera and Number bitmasks, dp, math, probabilities	2400	x697
441D	Valera and Swaps constructive algorithms, dsu, graphs, implementation, math, string suffix structures	2100	x1103
440D	Berland Federalization dp, trees	2200	x678