Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round (Div. 1)
6 days

Before contest
Codeforces Round (Div. 2)
6 days

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
420B	Online Meeting implementation	1800	x1050
420A	Start Up implementation	1000	x6407
418E	Tricky Password data structures	3100	x332
418D	Big Problems for Organizers data structures, graphs, trees	2800	x491
417E	Square Table constructive algorithms, math, probabilities	2400	x859
417D	Cunning Gena bitmasks, dp, greedy, sortings	1900	x2588
417C	Football constructive algorithms, graphs, implementation	1400	x4741
417B	Crash implementation	1400	x1869
417A	Elimination dp, implementation, math	1500	x3100
416E	President's Path dp, graphs, shortest paths	2500	x1582
416D	Population Size greedy, implementation, math	2400	x977
416C	Booking System binary search, dp, greedy, implementation	1600	x8166
416B	Art Union brute force, dp, implementation	1300	x8854
416A	Guess a number! greedy, implementation, two pointers	1400	x9114
415B	Mashmokh and Tokens binary search, greedy, implementation, math	1500	x6396
415A	Mashmokh and Lights implementation	900	x9129
414E	Mashmokh's Designed Problem data structures	3200	x201
414D	Mashmokh and Water Tanks binary search, data structures, greedy, trees, two pointers	2300	x695
414C	Mashmokh and Reverse Operation combinatorics, divide and conquer	2100	x2254
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x23682
414A	Mashmokh and Numbers constructive algorithms, number theory	1500	x9921
413E	Maze 2D data structures, divide and conquer	2200	x759
413D	2048 bitmasks, dp	2000	x843
413C	Jeopardy! greedy, math	1400	x2412
413B	Spyke Chatting implementation	1300	x1736
413A	Data Recovery implementation	1200	x2709
412E	E-mail Addresses implementation	1900	x854
412D	Giving Awards dfs and similar	2000	x2117
412C	Pattern implementation, strings	1200	x3993
412B	Network Configuration greedy, sortings	900	x5687
412A	Poster greedy, implementation	900	x4561
411C	Kicker *special problem, implementation	1700	x1234
411B	Multi-core Processor implementation	1600	x1291
411A	Password Check *special problem, implementation	800	x7419
409I	Feed the Golorp *special problem	2400	x129
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x9096
409G	On a plane *special problem, geometry	2200	x526
409F	000001 *special problem	1900	x2113
409E	Dome *special problem	1800	x583
409D	Big Data *special problem	1700	x1729
409C	Magnum Opus *special problem	1700	x1996
409B	Mysterious Language *special problem	1700	x1376
409A	The Great Game *special problem	1700	x2484
408B	Garland implementation	1200	x9563
408A	Line to Cashier implementation	900	x11461
407E	k-d-sequence data structures	3100	x830
407D	Largest Submatrix 3 dp, hashing	2700	x687
407C	Curious Array brute force, combinatorics, implementation, math	2500	x1067
407B	Long Path dp, implementation	1600	x6681
407A	Triangle brute force, geometry, implementation, math	1600	x4959
406E	Hamming Triples implementation, math, two pointers	2800	x251
406D	Hill Climbing dfs and similar, geometry, trees	2200	x1198
405E	Graph Cutting dfs and similar, graphs	2300	x1462
405D	Toy Sum greedy, implementation, math	1700	x3135
405C	Unusual Product implementation, math	1600	x4720
405B	Domino Effect	1100	x5853
405A	Gravity Flip greedy, implementation, sortings	900	x107558
404E	Maze 1D binary search, greedy, implementation	2200	x610
404D	Minesweeper 1D dp, implementation	1900	x2239
404C	Restore Graph dfs and similar, graphs, sortings	1800	x5342
404B	Marathon implementation, math	1500	x2948
404A	Valera and X implementation	1000	x24668
403E	Two Rooted Trees data structures, implementation, trees	2900	x225
403D	Beautiful Pairs of Numbers combinatorics, dp	2300	x1130
402E	Strictly Positive Matrix graphs, math	2200	x2220
402D	Upgrading Array dp, greedy, math, number theory	1800	x2652
402C	Searching for Graph brute force, constructive algorithms, graphs	1500	x6032
402B	Trees in a Row brute force, implementation	1400	x3845
402A	Nuts greedy, math	1100	x4654
401E	Olympic Games math	2500	x169
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x4265
401C	Team constructive algorithms, greedy, implementation	1400	x20447
401B	Sereja and Contests greedy, implementation, math	1200	x4450
401A	Vanya and Cards implementation, math	800	x16638
400E	Inna and Binary Logic binary search, bitmasks, data structures	2100	x986
400D	Dima and Bacteria dsu, graphs, shortest paths	2000	x2959
400C	Inna and Huge Candy Matrix implementation, math	1500	x2916
400B	Inna and New Matrix of Candies brute force, implementation, schedules	1200	x7952
400A	Inna and Choose Options implementation	1000	x6616
399B	Red and Blue Balls		x1844
399A	Pages implementation		x4165
398E	Sorting Permutations		x96
398D	Instant Messanger data structures		x972
398C	Tree and Array constructive algorithms		x215
398B	Painting The Wall dp, probabilities		x1077
398A	Cards constructive algorithms, implementation		x928
397B	On Corruption and Numbers constructive algorithms, implementation, math		x761
397A	On Segment's Own Points implementation		x2646
396E	On Iteration of One Well-Known Function math		x157
396D	On Sum of Number of Inversions in Permutations combinatorics, math		x439
396C	On Changing Tree data structures, graphs, trees		x1652
396B	On Sum of Fractions math, number theory		x1116
396A	On Number of Decompositions into Multipliers combinatorics, math, number theory		x1526
394E	Lightbulb for Minister geometry		x118
394D	Physical Education and Buns brute force, implementation, math		x272
394C	Dominoes constructive algorithms, greedy		x524
394B	Very Beautiful Number math		x590
394A	Counting Sticks brute force, implementation		x2671
393B	Three matrices		x2009
393A	Nineteen		x6711