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44 problems · filtered by 3 tags
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Name
✎
Rating
↕
Solved
↕
2174F
Mosaic Tree
combinatorics
dp
fft
math
trees
+
2800
508
2169F
Subsequence Problem
combinatorics
dp
fft
math
+
2700
353
2145G
Cost of Coloring
combinatorics
divide and conquer
dp
fft
math
+
2900
642
2122G
Tree Parking
combinatorics
fft
math
trees
+
3300
1.4k
2096H
Wonderful XOR Problem
bitmasks
combinatorics
dp
fft
math
+
3200
235
2077C
Binary Subsequence Value Sum
combinatorics
data structures
dp
fft
math
matrices
+
2300
2.4k
2072F
Goodbye, Banker Life
2-sat
bitmasks
combinatorics
constructive algorithms
fft
math
number theory
+
1700
8.7k
2038F
Alternative Platforms
combinatorics
data structures
fft
math
sortings
+
2500
492
2025E
Card Game
combinatorics
dp
fft
greedy
math
+
2200
2.4k
1988F
Heartbeat
combinatorics
dp
fft
math
+
3000
481
1967E1
Again Counting Arrays (Easy Version)
combinatorics
dp
fft
math
+
3100
449
1909I
Short Permutation Problem
combinatorics
dp
fft
math
+
1900
183
1821F
Timber
combinatorics
dp
fft
math
+
2600
1k
1773G
Game of Questions
bitmasks
combinatorics
dp
fft
math
probabilities
+
2800
560
1731F
Function Sum
brute force
combinatorics
dp
fft
math
+
2500
924
1726E
Almost Perfect
combinatorics
fft
math
+
2400
1.8k
1704H1
Game of AI (easy version)
combinatorics
constructive algorithms
dp
fft
math
+
3200
346
1704H2
Game of AI (hard version)
combinatorics
fft
math
+
3500
119
1671F
Permutation Counting
brute force
combinatorics
dp
fft
math
+
2700
514
1667E
Centroid Probabilities
combinatorics
dp
fft
math
+
3000
938
1654H
Three Minimums
combinatorics
constructive algorithms
divide and conquer
dp
fft
math
+
3500
108
1644F
Basis
combinatorics
fft
math
number theory
+
2900
511
1641E
Special Positions
combinatorics
divide and conquer
fft
math
+
3300
365
1608D
Dominoes
combinatorics
fft
graphs
math
number theory
+
2400
1.6k
1580F
Problems for Codeforces
combinatorics
fft
math
+
3300
226
1559E
Mocha and Stars
combinatorics
dp
fft
math
number theory
+
2200
2.8k
1553I
Stairs
combinatorics
divide and conquer
dp
fft
math
+
3400
369
1548C
The Three Little Pigs
combinatorics
dp
fft
math
+
2500
2.1k
1542E1
Abnormal Permutation Pairs (easy version)
combinatorics
dp
fft
math
+
2400
1.5k
1542E2
Abnormal Permutation Pairs (hard version)
combinatorics
dp
fft
math
+
2700
1.1k
1536F
Omkar and Akmar
chinese remainder theorem
combinatorics
constructive algorithms
fft
games
geometry
math
meet-in-the-middle
string suffix structures
+
2600
1.2k
1528F
AmShZ Farm
combinatorics
fft
math
+
3300
526
1487G
String Counting
combinatorics
dp
fft
math
+
2700
745
1477F
Nezzar and Chocolate Bars
combinatorics
fft
math
probabilities
+
3500
369
1473G
Tiles
combinatorics
dp
fft
math
+
2800
499
1450H1
Multithreading (Easy Version)
combinatorics
fft
math
+
2900
625
1342E
Placing Rooks
combinatorics
fft
math
+
2300
3.7k
981H
K Paths
combinatorics
data structures
dp
fft
math
+
3100
453
960G
Bandit Blues
combinatorics
dp
fft
math
+
2900
1.3k
848E
Days of Floral Colours
combinatorics
divide and conquer
dp
fft
math
+
3400
283
773F
Test Data Generation
combinatorics
divide and conquer
dp
fft
math
number theory
+
3400
281
755G
PolandBall and Many Other Balls
combinatorics
divide and conquer
dp
fft
math
number theory
+
3200
1.1k
715E
Complete the Permutations
combinatorics
fft
graphs
math
+
3400
586
623E
Transforming Sequence
combinatorics
dp
fft
math
+
3300
715
showing 1–44 of 44