Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 987 (Div. 2)
05:19:50
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1461A	String Generation constructive algorithms, greedy	800	x18600
1459A	Red-Blue Shuffle math, probabilities	800	x17034
1455C	Ping-pong constructive algorithms, games, math	1100	x19647
1455B	Jumps constructive algorithms, math	1200	x21987
1455A	Strange Functions math, number theory	800	x26522
1454C	Sequence Transformation greedy, implementation	1200	x21545
1454B	Unique Bid Auction implementation	800	x28605
1454A	Special Permutation constructive algorithms, probabilities	800	x40799
1453A	Cancel the Trains implementation	800	x22683
1452C	Two Brackets greedy	800	x19682
1452A	Robot Program math	800	x22184
1451B	Non-Substring Subsequence dp, greedy, implementation, strings	900	x19349
1451A	Subtract or Divide greedy, math	800	x24322
1450B	Balls of Steel brute force, geometry, greedy	1000	x15211
1450A	Avoid Trygub constructive algorithms, sortings	800	x18011
1447B	Numbers Box greedy, math	1000	x16952
1447A	Add Candies constructive algorithms, math	800	x13841
1445B	Elimination greedy, math	900	x15349
1445A	Array Rearrangment greedy, sortings	800	x19133
1443A	Kids Seating constructive algorithms, math	800	x16248
1440B	Sum of Medians greedy, math	900	x19255
1440A	Buy the String implementation, math	800	x19790
1438B	Valerii Against Everyone constructive algorithms, data structures, greedy, sortings	1000	x20040
1438A	Specific Tastes of Andre constructive algorithms, implementation	800	x19283
1437B	Reverse Binary Strings constructive algorithms, greedy	1200	x19352
1437A	Marketing Scheme brute force, constructive algorithms, greedy, math	800	x18034
1436B	Prime Square constructive algorithms, math	900	x20679
1436A	Reorder math	800	x22736
1433D	Districts Connection constructive algorithms, dfs and similar	1200	x23462
1433C	Dominant Piranha constructive algorithms, greedy	900	x27095
1433B	Yet Another Bookshelf greedy, implementation	800	x28645
1433A	Boring Apartments implementation, math	800	x53106
1431A	Selling Hamburgers *special problem	800	x1908
1430C	Numbers on Whiteboard constructive algorithms, data structures, greedy, implementation, math	1000	x24835
1430B	Barrels greedy, implementation, sortings	800	x19424
1430A	Number of Apartments brute force, constructive algorithms, math	900	x20942
1428C	ABBB brute force, data structures, greedy, strings	1100	x20332
1428B	Belted Rooms graphs, implementation	1200	x14445
1428A	Box is Pull math	800	x16346
1427A	Avoiding Zero math, sortings	900	x17264
1426C	Increase and Copy binary search, constructive algorithms, math	1100	x19454
1426B	Symmetric Matrix implementation	900	x20702
1426A	Floor Number implementation, math	800	x48543
1422A	Fence geometry, math	800	x21015
1421B	Putting Bricks in the Wall constructive algorithms, implementation	1100	x13123
1421A	XORwice bitmasks, greedy, math	800	x29366
1420B	Rock and Lever bitmasks, math	1200	x26159
1420A	Cubes Sorting math, sortings	900	x23523
1419D1	Sage's Birthday (easy version) binary search, constructive algorithms, greedy, sortings	1000	x24516
1419B	Stairs brute force, constructive algorithms, greedy, implementation, math	1200	x16313
1419A	Digit Game games, greedy, implementation	900	x19606
1418A	Buying Torches math	1000	x23435
1417B	Two Arrays greedy, math, sortings	1100	x14477
1417A	Copy-paste greedy, math	800	x18298
1415B	Repainting Street brute force, brute force, greedy	1100	x12205
1415A	Prison Break brute force, math	800	x15206
1413B	A New Technique implementation	1100	x11730
1413A	Finding Sasuke constructive algorithms, math	800	x14822
1411B	Fair Numbers brute force, number theory	1000	x19770
1411A	In-game Chat implementation	800	x20690
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x23414
1409B	Minimum Product brute force, greedy, math	1100	x29115
1409A	Yet Another Two Integers Problem greedy, math	800	x67213
1408A	Circle Coloring constructive algorithms	800	x12512
1407A	Ahahahahahahahaha constructive algorithms, math	1100	x20487
1406B	Maximum Product brute force, dp, greedy, implementation, sortings	1200	x22759
1406A	Subset Mex greedy, implementation, math	900	x21556
1405B	Array Cancellation constructive algorithms, implementation	1000	x21666
1405A	Permutation Forgery constructive algorithms	800	x21489
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x21146
1401A	Distance and Axis constructive algorithms, math	900	x27577
1400A	String Similarity constructive algorithms, strings	800	x27076
1399C	Boats Competition brute force, greedy, two pointers	1200	x29310
1399B	Gifts Fixing greedy	800	x43749
1399A	Remove Smallest greedy, sortings	800	x67400
1398B	Substring Removal Game games, greedy, sortings	800	x24725
1398A	Bad Triangle geometry, math	800	x27710
1397A	Juggling Letters greedy, strings	800	x28724
1395B	Boboniu Plays Chess constructive algorithms	1100	x16070
1395A	Boboniu Likes to Color Balls brute force, math	1000	x24199
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20540
1392C	Omkar and Waterslide greedy, implementation	1200	x18859
1392B	Omkar and Infinity Clock implementation, math	800	x18502
1392A	Omkar and Password greedy, math	800	x20788
1391B	Fix You brute force, greedy, implementation	800	x27447
1391A	Suborrays constructive algorithms, math	800	x24444
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x41874
1388B	Captain Flint and a Long Voyage greedy, math	1000	x22328
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24980
1385C	Make It Good greedy	1200	x27129
1385B	Restore the Permutation by Merger greedy	800	x37327
1385A	Three Pairwise Maximums math	800	x39437
1384A	Common Prefixes constructive algorithms, greedy, strings	1200	x18843
1382B	Sequential Nim dp, games	1100	x24730
1382A	Common Subsequence brute force	800	x26575
1380A	Three Indices brute force, data structures	900	x26312
1375B	Neighbor Grid constructive algorithms, greedy	1200	x17312
1375A	Sign Flipping constructive algorithms, math	1100	x18389
1374C	Move Brackets greedy, strings	1000	x47657
1374B	Multiply by 2, divide by 6 math	900	x51368