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57 problems · filtered by 3 tags
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Name
✎
Rating
↕
Solved
↕
2217F
Interval Game
bitmasks
combinatorics
constructive algorithms
dp
games
greedy
math
probabilities
+
2300
885
2207E2
N-MEX (Counting Version)
combinatorics
constructive algorithms
math
+
2400
964
2158F2
Distinct GCDs (Hard Version)
combinatorics
constructive algorithms
graphs
math
number theory
+
3000
287
2157H
Keygen 3
brute force
combinatorics
constructive algorithms
dfs and similar
math
+
3200
238
2154F1
Bombing (Easy Version)
brute force
combinatorics
constructive algorithms
implementation
math
+
2700
594
2096D
Wonderful Lightbulbs
combinatorics
constructive algorithms
math
+
2000
5.7k
2092E
She knows...
combinatorics
constructive algorithms
graphs
math
+
2100
3.9k
2077E
Another Folding Strip
combinatorics
constructive algorithms
data structures
divide and conquer
dp
greedy
math
+
2700
627
2072F
Goodbye, Banker Life
2-sat
bitmasks
combinatorics
constructive algorithms
fft
math
number theory
+
1700
8.7k
2040C
Ordered Permutations
bitmasks
combinatorics
constructive algorithms
greedy
math
two pointers
+
1600
11k
2034E
Permutations Harmony
combinatorics
constructive algorithms
greedy
hashing
math
+
2200
2.1k
2030B
Minimise Oneness
combinatorics
constructive algorithms
games
math
+
800
24k
2005A
Simple Palindrome
combinatorics
constructive algorithms
greedy
math
+
900
26.7k
1994H
Fortnite
combinatorics
constructive algorithms
games
greedy
hashing
interactive
math
number theory
strings
+
3500
779
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
brute force
combinatorics
constructive algorithms
dfs and similar
math
+
2300
1.2k
1922B
Forming Triangles
combinatorics
constructive algorithms
math
sortings
+
1200
23.7k
1919E
Counting Prefixes
combinatorics
constructive algorithms
dp
implementation
math
+
2600
1.2k
1862D
Ice Cream Balls
binary search
combinatorics
constructive algorithms
math
+
1300
20.2k
1833F
Ira and Flamenco
combinatorics
constructive algorithms
data structures
implementation
math
sortings
two pointers
+
1700
10.6k
1823A
A-characteristic
combinatorics
constructive algorithms
math
+
800
17.3k
1776G
Another Wine Tasting Event
combinatorics
constructive algorithms
math
strings
+
2100
2.4k
1767D
Playoff
combinatorics
constructive algorithms
dp
greedy
math
+
1500
11.3k
1748D
ConstructOR
bitmasks
chinese remainder theorem
combinatorics
constructive algorithms
math
number theory
+
2100
3.3k
1743G
Antifibonacci Cut
bitmasks
combinatorics
constructive algorithms
data structures
dp
hashing
math
+
3000
381
1732A
Bestie
brute force
combinatorics
constructive algorithms
implementation
math
number theory
+
1000
17.8k
1717D
Madoka and The Corruption Scheme
combinatorics
constructive algorithms
greedy
math
+
1900
4.9k
1713F
Lost Array
bitmasks
combinatorics
constructive algorithms
dp
math
+
2900
771
1705D
Mark and Lightbulbs
combinatorics
constructive algorithms
greedy
math
sortings
+
1800
7.2k
1704H1
Game of AI (easy version)
combinatorics
constructive algorithms
dp
fft
math
+
3200
346
1699C
The Third Problem
combinatorics
constructive algorithms
math
+
1700
10.8k
1697E
Coloring
brute force
combinatorics
constructive algorithms
dp
geometry
graphs
greedy
implementation
math
+
2400
1.5k
1687E
Become Big For Me
combinatorics
constructive algorithms
greedy
math
number theory
+
3500
323
1654H
Three Minimums
combinatorics
constructive algorithms
divide and conquer
dp
fft
math
+
3500
108
1651E
Sum of Matchings
brute force
combinatorics
constructive algorithms
dfs and similar
graph matchings
greedy
math
+
2600
669
1614C
Divan and bitwise operations
bitmasks
combinatorics
constructive algorithms
dp
math
+
1500
11.4k
1586I
Omkar and Mosaic
combinatorics
constructive algorithms
math
+
3500
355
1574E
Coloring
combinatorics
constructive algorithms
implementation
math
+
2500
1.1k
1553E
Permutation Shift
brute force
combinatorics
constructive algorithms
dfs and similar
dsu
graphs
math
+
2100
3.8k
1550D
Excellent Arrays
binary search
combinatorics
constructive algorithms
implementation
math
sortings
two pointers
+
2300
2.1k
1536F
Omkar and Akmar
chinese remainder theorem
combinatorics
constructive algorithms
fft
games
geometry
math
meet-in-the-middle
string suffix structures
+
2600
1.2k
1526E
Oolimry and Suffix Array
combinatorics
constructive algorithms
math
+
2400
1.6k
1513B
AND Sequences
bitmasks
combinatorics
constructive algorithms
math
+
1400
21k
1513E
Cost Equilibrium
combinatorics
constructive algorithms
math
sortings
+
2300
1.8k
1499A
Domino on Windowsill
combinatorics
constructive algorithms
math
+
800
22k
1365G
Secure Password
bitmasks
combinatorics
constructive algorithms
interactive
math
+
2800
1.5k
1332E
Height All the Same
combinatorics
constructive algorithms
math
matrices
+
2100
4.4k
1280F
Intergalactic Sliding Puzzle
combinatorics
constructive algorithms
math
+
3400
113
1276C
Beautiful Rectangle
brute force
combinatorics
constructive algorithms
data structures
greedy
math
+
2300
1.8k
1202D
Print a 1337-string...
combinatorics
constructive algorithms
math
strings
+
1900
5.5k
894B
Ralph And His Magic Field
combinatorics
constructive algorithms
math
number theory
+
1800
4.7k
815B
Karen and Test
brute force
combinatorics
constructive algorithms
math
+
2200
1.7k
735C
Tennis Championship
combinatorics
constructive algorithms
greedy
math
+
1600
8.1k
612E
Square Root of Permutation
combinatorics
constructive algorithms
dfs and similar
graphs
math
+
2200
2.1k
553B
Kyoya and Permutation
binary search
combinatorics
constructive algorithms
greedy
implementation
math
+
1900
2.3k
478B
Random Teams
combinatorics
constructive algorithms
greedy
math
+
1300
41.9k
459C
Pashmak and Buses
combinatorics
constructive algorithms
math
+
1900
6.5k
353B
Two Heaps
combinatorics
constructive algorithms
greedy
implementation
math
sortings
+
1900
2.4k
showing 1–57 of 57