Problemset - Codeforces

→ Pay attention

Contest is running
2023 Post World Finals Online ICPC Challenge powered by Huawei
2 weeks
Register now »

Before contest
Kotlin Heroes: Practice 10
12:05:41
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
362E	Petya and Pipes flows, graphs, shortest paths	2300	x795
1146G	Zoning Restrictions dp, flows, graphs	2700	x794
627D	Preorder Test binary search, dfs and similar, dp, graphs, greedy, trees	2600	x794
248C	Robo-Footballer binary search, geometry	2000	x793
827E	Rusty String fft, math, strings	2700	x791
1648D	Serious Business data structures, divide and conquer, dp, implementation, shortest paths	2800	x790
1030F	Putting Boxes Together data structures	2500	x790
1809E	Two Tanks binary search, dp, implementation, math	2400	x789
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x789
1145C	Mystery Circuit bitmasks, brute force		x789
162A	Pentagonal numbers *special problem, implementation	1100	x789
150E	Freezing with Style binary search, data structures, divide and conquer, trees	3000	x789
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x788
1091F	New Year and the Mallard Expedition constructive algorithms, greedy	2600	x786
605D	Board Game data structures, dfs and similar	2500	x786
683A	The Check of the Point *special problem, geometry	1200	x785
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x784
1312G	Autocompletion data structures, dfs and similar, dp	2600	x783
578D	LCS Again dp, greedy	2700	x782
1768F	Wonderful Jump dp, greedy	2900	x781
277B	Set of Points constructive algorithms, geometry	2300	x781
639D	Bear and Contribution data structures, greedy, sortings, two pointers	2400	x779
417E	Square Table constructive algorithms, math, probabilities	2400	x779
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x778
1400F	x-prime Substrings brute force, dfs and similar, dp, string suffix structures, strings	2800	x778
1758E	Tick, Tock combinatorics, dfs and similar, dsu, graphs	2500	x777
1292D	Chaotic V. dp, graphs, greedy, math, number theory, trees	2700	x777
1103C	Johnny Solving constructive algorithms, dfs and similar, graphs, math	2700	x777
1016F	Road Projects dfs and similar, dp, trees	2600	x777
607C	Marbles hashing, strings	2500	x777
475C	Kamal-ol-molk's Painting brute force, constructive algorithms, greedy	2100	x777
225E	Unsolvable math, number theory	2100	x777
199B	Special Olympics geometry	1900	x777
704D	Captain America flows, greedy	3100	x776
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees		x774
568C	New Language 2-sat, greedy	2600	x774
1348F	Phoenix and Memory data structures, dfs and similar, graphs, greedy	2600	x773
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x772
1693D	Decinc Dividing brute force, data structures, divide and conquer, dp, greedy	2800	x772
293B	Distinct Paths brute force, combinatorics	2700	x772
162C	Prime factorization *special problem	1800	x772
65C	Harry Potter and the Golden Snitch binary search, geometry	2100	x772
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x771
1672F2	Checker for Array Shuffling constructive algorithms, dfs and similar, graphs	2800	x771
1380G	Circular Dungeon greedy, math, probabilities	2600	x771
1039A	Timetable constructive algorithms, data structures, greedy, math	2300	x771
1398G	Running Competition bitmasks, fft, math, number theory	2600	x770
1179D	Fedor Runs for President data structures, dp, trees	2700	x770
1170C	Minus and Minus Give Plus *special problem, implementation, strings		x770
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x769
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x769
1734F	Zeros and Ones bitmasks, divide and conquer, dp, math	2500	x769
1009G	Allowed Letters bitmasks, flows, graph matchings, graphs, greedy	2400	x769
28A	Bender Problem implementation	1600	x769
1924D	Balanced Subsequences combinatorics, dp, math	2700	x768
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x768
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x767
1373G	Pawns data structures, divide and conquer, greedy	2600	x767
467E	Alex and Complicated Task data structures, dp, greedy	2300	x767
420D	Cup Trick data structures	2200	x766
213E	Two Permutations data structures, hashing, strings	2700	x766
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x765
666C	Codeword combinatorics, strings	2500	x765
1531B2	Мониторинг *special problem		x764
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x763
1491H	Yuezheng Ling and Dynamic Tree data structures, trees	3400	x762
727F	Polycarp's problems binary search, dp, greedy	2300	x762
794D	Labelling Cities dfs and similar, graphs, hashing	2400	x761
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x760
1592F1	Alice and Recoloring 1 constructive algorithms, greedy	2600	x760
1153F	Serval and Bonus Problem combinatorics, dp, math, probabilities	2600	x760
809D	Hitchhiking in the Baltic States data structures, dp	2900	x760
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x759
153A	A + B *special problem	1600	x759
1740F	Conditional Mix combinatorics, dp, math	2600	x758
1580D	Subsequence brute force, divide and conquer, dp, greedy, trees	2900	x758
822E	Liar binary search, dp, hashing, string suffix structures	2400	x757
645F	Cowslip Collections combinatorics, math, number theory	2500	x757
843D	Dynamic Shortest Path graphs, shortest paths	3400	x756
575A	Fibonotci data structures, math, matrices	2700	x756
1776C	Library game games, greedy, interactive, sortings	2500	x755
67B	Restoration of the Permutation greedy	1800	x755
48C	The Race math	1800	x755
1380F	Strange Addition data structures, dp, matrices	2600	x753
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x753
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x753
188A	Hexagonal Numbers *special problem	1100	x753
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x752
241B	Friends binary search, bitmasks, data structures, math	2700	x751
1533B	Nearest Point Function *special problem, implementation		x749
1383E	Strange Operation combinatorics, data structures, dp	2800	x749
1186F	Vus the Cossack and a Graph dfs and similar, graphs, greedy, implementation	2400	x749
413D	2048 bitmasks, dp	2000	x749
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x749
1264E	Beautiful League constructive algorithms, flows, graph matchings	2700	x747
888F	Connecting Vertices dp, graphs	2500	x747
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x746
435D	Special Grid brute force, dp, greedy	2000	x746
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x745
350E	Wrong Floyd brute force, constructive algorithms, dfs and similar, graphs	2200	x745