Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 988 (Div. 3)
25:37:03
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1366A	Shovels and Swords binary search, greedy, math	1100	x30322
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x1175
1365F	Swaps Again constructive algorithms, implementation, sortings	2100	x4460
1365E	Maximum Subsequence Value brute force, constructive algorithms	1900	x7871
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x17562
1365C	Rotation Matching constructive algorithms, data structures, greedy, implementation	1400	x23243
1365B	Trouble Sort constructive algorithms, implementation	1300	x27025
1365A	Matrix Game games, greedy, implementation	1100	x24167
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1437
1364D	Ehab's Last Corollary constructive algorithms, dfs and similar, graphs, greedy, implementation, trees	2100	x4433
1364C	Ehab and Prefix MEXs brute force, constructive algorithms, greedy	1600	x13227
1364B	Most socially-distanced subsequence greedy, two pointers	1300	x20098
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x28379
1363F	Rotating Substrings dp, strings	2600	x1529
1363E	Tree Shuffling dfs and similar, dp, greedy, trees	2000	x6862
1363D	Guess The Maximums binary search, implementation, interactive, math	2100	x4097
1363C	Game On Leaves games, trees	1600	x18917
1363B	Subsequence Hate implementation, strings	1400	x23765
1363A	Odd Selection brute force, implementation, math	1200	x36262
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x18559
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x19303
1362A	Johnny and Ancient Computer implementation	1000	x24464
1361F	Johnny and New Toy data structures, implementation, math	3300	x154
1361E	James and the Chase dfs and similar, graphs, probabilities, trees	3000	x700
1361D	Johnny and James greedy, implementation, math, trees	2900	x320
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1644
1361B	Johnny and Grandmaster greedy, implementation, math, sortings	1900	x3641
1361A	Johnny and Contribution constructive algorithms, graphs, greedy, sortings	1700	x8443
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x4599
1360G	A/B Matrix constructive algorithms, greedy, math	1900	x7824
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x12500
1360E	Polygon dp, graphs, implementation, shortest paths	1300	x25527
1360D	Buying Shovels math, number theory	1300	x33661
1360C	Similar Pairs constructive algorithms, graph matchings, greedy, sortings	1100	x33053
1360B	Honest Coach greedy, sortings	800	x48302
1360A	Minimal Square greedy, math	800	x51130
1359F	RC Kaboom Show binary search, brute force, data structures, geometry, math	2900	x543
1359E	Modular Stability combinatorics, math, number theory	2000	x6153
1359D	Yet Another Yet Another Task data structures, dp, implementation, two pointers	2000	x9550
1359C	Mixing Water binary search, math	1700	x13925
1359B	New Theatre Square brute force, dp, greedy, implementation, two pointers	1000	x27914
1359A	Berland Poker brute force, greedy, math	1000	x29790
1358F	Tasty Cookie binary search, constructive algorithms, greedy, implementation	2700	x458
1358E	Are You Fired? constructive algorithms, data structures, greedy, implementation	2400	x2337
1358D	The Best Vacation binary search, brute force, greedy, implementation, two pointers	1900	x8199
1358C	Celex Update math	1600	x17452
1358B	Maria Breaks the Self-isolation greedy, sortings	1000	x24983
1358A	Park Lighting greedy, math	800	x39686
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x870
1355E	Restorer Distance binary search, greedy, math, sortings, ternary search	2100	x5185
1355D	Game With Array constructive algorithms, math	1400	x18120
1355C	Count Triangles binary search, implementation, math, two pointers	1800	x10730
1355B	Young Explorers dp, greedy, sortings	1200	x25856
1355A	Sequence with Digits brute force, implementation, math	1200	x26761
1354G	Find a Gift binary search, interactive, probabilities	2600	x796
1354F	Summoning Minions constructive algorithms, dp, flows, graph matchings, greedy, sortings	2500	x1236
1354E	Graph Coloring dfs and similar, dp, graphs	2100	x3382
1354D	Multiset binary search, data structures	1900	x8878
1354C2	Not So Simple Polygon Embedding binary search, brute force, geometry, math	2000	x6106
1354C1	Simple Polygon Embedding binary search, geometry, math, ternary search	1400	x15734
1354B	Ternary String binary search, dp, implementation, two pointers	1200	x31253
1354A	Alarm Clock math	900	x23861
1353F	Decreasing Heights brute force, dp	2200	x3360
1353E	K-periodic Garland brute force, dp, greedy	1900	x7192
1353D	Constructing the Array constructive algorithms, data structures, sortings	1600	x18229
1353C	Board Moves math	1000	x35677
1353B	Two Arrays And Swaps greedy, sortings	800	x50366
1353A	Most Unstable Array constructive algorithms, greedy, math	800	x41168
1352G	Special Permutation constructive algorithms	1600	x21505
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x17295
1352E	Special Elements brute force, implementation, two pointers	1500	x20734
1352D	Alice, Bob and Candies implementation	1300	x26418
1352C	K-th Not Divisible by n binary search, math	1200	x55667
1352B	Same Parity Summands constructive algorithms, math	1200	x38049
1352A	Sum of Round Numbers implementation, math	800	x81079
1351C	Skier data structures, implementation	1400	x8621
1351B	Square? brute force, implementation, math	900	x17114
1351A	A+B (Trial Problem) implementation	800	x24217
1350B	Orac and Models dp, math, number theory	1400	x22517
1350A	Orac and Factors math	900	x26143
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x114
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x418
1349E	Slime and Hats constructive algorithms, dp, greedy	3500	x92
1349D	Slime and Biscuits math, probabilities	3200	x911
1349C	Orac and Game of Life dfs and similar, graphs, implementation, shortest paths	2000	x4543
1349B	Orac and Medians constructive algorithms, greedy, math	2000	x8197
1349A	Orac and LCM data structures, math, number theory	1600	x17302
1348F	Phoenix and Memory data structures, dfs and similar, graphs, greedy	2600	x821
1348E	Phoenix and Berries brute force, dp, greedy, math	2400	x2243
1348D	Phoenix and Science binary search, constructive algorithms, greedy, implementation, math	1900	x8909
1348C	Phoenix and Distribution constructive algorithms, greedy, sortings, strings	1600	x14679
1348B	Phoenix and Beauty constructive algorithms, data structures, greedy, sortings	1400	x25506
1348A	Phoenix and Balance greedy, math	800	x39765
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	x380
1346D	Constructing the Dungeon *special problem, graphs, greedy	1600	x506
1346C	Spring Cleaning *special problem, greedy, sortings	1600	x608