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)
11:52:19
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
818G	Four Melodies flows, graphs	2600	x736
818F	Level Generation binary search, math, ternary search	2100	x1552
818E	Card Game Again binary search, data structures, number theory, two pointers	1900	x2261
818D	Multicolored Cars data structures, implementation	1700	x3462
818C	Sofa Thief brute force, implementation	2000	x1241
818B	Permutation Game implementation	1600	x3010
818A	Diplomas and Certificates implementation, math	800	x6935
817F	MEX Queries binary search, data structures, trees	2300	x2561
817E	Choosing The Commander bitmasks, data structures, trees	2000	x2884
817D	Imbalanced Array data structures, divide and conquer, dsu, sortings	1900	x4672
817C	Really Big Numbers binary search, brute force, dp, math	1600	x7335
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5707
817A	Treasure Hunt implementation, math, number theory	1200	x6226
816B	Karen and Coffee binary search, data structures, implementation	1400	x17739
816A	Karen and Morning brute force, implementation	1000	x9025
815E	Karen and Neighborhood binary search, constructive algorithms, implementation	2900	x222
815D	Karen and Cards binary search, combinatorics, data structures, geometry	2800	x612
815C	Karen and Supermarket brute force, dp, trees	2400	x2626
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1377
815A	Karen and Game brute force, greedy, implementation	1700	x5615
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x651
814D	An overnight dance in discotheque dfs and similar, dp, geometry, greedy, trees	2000	x2332
814C	An impassioned circulation of affection brute force, dp, strings, two pointers	1600	x6545
814B	An express train to reveries constructive algorithms	1300	x5619
814A	An abandoned sentiment from past constructive algorithms, greedy, implementation, sortings	900	x10370
813F	Bipartite Checking data structures, dsu, graphs	2500	x1341
813E	Army Creation binary search, data structures	2200	x2397
813D	Two Melodies dp, flows	2600	x1022
813C	The Tag Game dfs and similar, graphs	1700	x5934
813B	The Golden Age brute force, math	1800	x3908
813A	The Contest implementation	1100	x5080
812E	Sagheer and Apple Tree games, trees	2300	x1095
812D	Sagheer and Kindergarten dfs and similar, graphs, implementation, trees	2700	x329
812C	Sagheer and Nubian Market binary search, sortings	1500	x13730
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5158
812A	Sagheer and Crossroads implementation	1200	x6201
811E	Vladik and Entertaining Flags data structures, dsu, graphs	2600	x869
811D	Vladik and Favorite Game constructive algorithms, dfs and similar, graphs, interactive	2100	x1762
811C	Vladik and Memorable Trip dp, implementation	1900	x3245
811B	Vladik and Complicated Book implementation, sortings	1200	x6472
811A	Vladik and Courtesy brute force, implementation	800	x11859
810B	Summer sell-off greedy, sortings	1300	x11387
810A	Straight <<A>> implementation, math	900	x8802
809E	Surprise me! divide and conquer, math, number theory, trees	3100	x733
809D	Hitchhiking in the Baltic States data structures, dp	2900	x834
809C	Find a car combinatorics, divide and conquer, dp	2600	x738
809B	Glad to see you! binary search, interactive	2200	x1658
809A	Do you want a date? implementation, math, sortings	1500	x4688
808G	Anthem of Berland dp, strings	2300	x2674
808F	Card Game binary search, flows, graphs	2400	x1165
808E	Selling Souvenirs binary search, dp, greedy, ternary search	2300	x1829
808D	Array Division binary search, data structures, implementation	1900	x6974
808C	Tea Party constructive algorithms, greedy, sortings	1400	x6143
808B	Average Sleep Time data structures, implementation, math	1300	x7522
808A	Lucky Year implementation	900	x9299
807B	T-Shirt Hunt brute force, implementation	1300	x3543
807A	Is it rated? implementation, sortings	900	x20518
805B	3-palindrome constructive algorithms	1000	x16725
805A	Fake NP greedy, math	1000	x17925
804F	Fake bullions combinatorics, dfs and similar, dp, graphs, number theory	3400	x163
804E	The same permutation constructive algorithms	3100	x426
804D	Expected diameter of a tree binary search, brute force, dfs and similar, dp, sortings, trees	2500	x1299
804C	Ice cream coloring constructive algorithms, dfs and similar, greedy	2200	x1844
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9628
804A	Find Amir constructive algorithms, greedy, math	1000	x15415
803G	Periodic RMQ Problem data structures	2300	x1555
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x3207
803E	Roma and Poker dp, graphs	2000	x2172
803D	Magazine Ad binary search, greedy	1900	x3242
803C	Maximal GCD constructive algorithms, greedy, math	1900	x5089
803B	Distances to Zero constructive algorithms	1200	x6524
803A	Maximal Binary Matrix constructive algorithms	1400	x4837
802O	April Fools' Problem (hard) binary search, data structures, flows	2900	x937
802N	April Fools' Problem (medium) binary search, flows, graphs	2400	x1188
802M	April Fools' Problem (easy) greedy, sortings	1200	x3108
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2400	x302
802K	Send the Fool Further! (medium) dp, trees	2100	x635
802J	Send the Fool Further! (easy) dfs and similar, graphs, trees	1400	x4576
802I	Fake News (hard) string suffix structures	2300	x1526
802H	Fake News (medium) constructive algorithms, strings	2200	x444
802G	Fake News (easy) implementation, strings	800	x6939
802F	Marmots (hard) math, probabilities	2800	x124
802E	Marmots (medium) math	2200	x249
802D	Marmots (easy) math	2100	x452
802C	Heidi and Library (hard) flows	2600	x556
802B	Heidi and Library (medium) data structures, greedy	1800	x1113
802A	Heidi and Library (easy) greedy	1800	x1365
801B	Valued Keys constructive algorithms, greedy, strings	900	x10223
801A	Vicious Keyboard brute force	1100	x7303
799G	Cut the pie binary search, data structures, geometry	3500	x116
799F	Beautiful fountains rows data structures	3500	x443
799E	Aquarium decoration data structures, greedy, two pointers	2500	x930
799D	Field expansion brute force, dp, meet-in-the-middle	2100	x2028
799C	Fountains binary search, data structures, implementation	1800	x3755
799B	T-shirt buying data structures, implementation	1400	x8750
799A	Carrot Cakes brute force, implementation	1100	x18729
798E	Mike and code of a permutation constructive algorithms, data structures, graphs, sortings	3000	x480
798D	Mike and distribution constructive algorithms, sortings	2400	x1902
798C	Mike and gcd problem dp, greedy, number theory	1700	x5786
798B	Mike and strings brute force, dp, strings	1300	x8377