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64 problems · filtered by 3 tags
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Name
✎
Rating
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2242E
Product of Closures
bitmasks
brute force
constructive algorithms
greedy
implementation
math
number theory
+
2200
1.4k
2217F
Interval Game
bitmasks
combinatorics
constructive algorithms
dp
games
greedy
math
probabilities
+
2300
885
2187B
Shortest Statement Ever
bitmasks
constructive algorithms
dp
greedy
+
1800
5.6k
2180C
XOR-factorization
bitmasks
constructive algorithms
dp
greedy
number theory
+
1900
6.7k
2179D
Blackslex and Penguin Civilization
bitmasks
constructive algorithms
greedy
math
+
1300
14.1k
2162C
Beautiful XOR
bitmasks
constructive algorithms
greedy
+
1100
22.2k
2157G
Isaac's Queries
bitmasks
brute force
constructive algorithms
dfs and similar
divide and conquer
dp
greedy
interactive
math
probabilities
+
2800
672
2146D1
Max Sum OR (Easy Version)
bitmasks
constructive algorithms
divide and conquer
greedy
trees
+
1500
11.2k
2146D2
Max Sum OR (Hard Version)
bitmasks
constructive algorithms
divide and conquer
greedy
+
2000
4.3k
2138A
Cake Assignment
bitmasks
constructive algorithms
greedy
+
1100
17.7k
2108B
SUMdamental Decomposition
bitmasks
constructive algorithms
greedy
implementation
math
+
1300
14.9k
2086E
Zebra-like Numbers
bitmasks
brute force
constructive algorithms
dfs and similar
dp
greedy
math
+
2400
1.7k
2085C
Serval and The Formula
bitmasks
constructive algorithms
dp
greedy
+
1600
14k
2081C
Quaternary Matrix
bitmasks
constructive algorithms
greedy
implementation
matrices
+
2700
372
2072C
Creating Keys for StORages Has Become My Main Skill
bitmasks
constructive algorithms
greedy
+
1200
20k
2057C
Trip to the Olympiad
bitmasks
constructive algorithms
greedy
math
+
1500
14.1k
2040C
Ordered Permutations
bitmasks
combinatorics
constructive algorithms
greedy
math
two pointers
+
1600
11k
1994B
Fun Game
bitmasks
constructive algorithms
greedy
math
+
1100
19.8k
1991B
AND Reconstruction
bitmasks
constructive algorithms
greedy
+
1100
19.2k
1991D
Prime XOR Coloring
bitmasks
constructive algorithms
graphs
greedy
math
number theory
+
1900
8k
1988C
Increasing Sequence with Fixed OR
bitmasks
constructive algorithms
greedy
+
1300
20.6k
1981C
Turtle and an Incomplete Sequence
bitmasks
brute force
constructive algorithms
greedy
implementation
math
+
1800
6.4k
1979D
Fixing a Binary String
bitmasks
brute force
constructive algorithms
dp
greedy
hashing
strings
+
1800
8k
1977B
Binary Colouring
bitmasks
constructive algorithms
greedy
math
+
1100
20.1k
1965B
Missing Subsequence Sum
bitmasks
constructive algorithms
greedy
number theory
+
1800
8.3k
1957B
A BIT of a Construction
bitmasks
constructive algorithms
greedy
implementation
+
1100
20.7k
1956D
Nene and the Mex Operator
bitmasks
brute force
constructive algorithms
divide and conquer
dp
greedy
implementation
math
+
2000
4.9k
1946D
Birthday Gift
bitmasks
brute force
constructive algorithms
greedy
implementation
+
1900
5.7k
1936A
Bitwise Operation Wizard
bitmasks
constructive algorithms
greedy
interactive
math
+
1700
8.8k
1934D1
XOR Break --- Solo Version
bitmasks
constructive algorithms
greedy
+
2100
4.2k
1922E
Increasing Subsequences
bitmasks
constructive algorithms
divide and conquer
greedy
math
+
1800
9.3k
1903B
StORage room
bitmasks
brute force
constructive algorithms
greedy
+
1200
15k
1886E
I Wanna be the Team Leader
bitmasks
constructive algorithms
dp
greedy
math
sortings
two pointers
+
2400
1.9k
1882B
Sets and Union
bitmasks
brute force
constructive algorithms
greedy
+
1300
17.6k
1868B1
Candy Party (Easy Version)
bitmasks
constructive algorithms
graphs
greedy
implementation
math
+
1700
8.4k
1868B2
Candy Party (Hard Version)
bitmasks
constructive algorithms
dp
greedy
implementation
math
+
2100
2.8k
1788F
XOR, Tree, and Queries
bitmasks
constructive algorithms
dfs and similar
dsu
graphs
greedy
implementation
trees
+
2500
1.2k
1787E
The Harmonization of XOR
bitmasks
constructive algorithms
greedy
math
+
2100
2.8k
1763A
Absolute Maximization
bitmasks
constructive algorithms
greedy
math
+
800
17.1k
1722G
Even-Odd XOR
bitmasks
constructive algorithms
greedy
+
1500
14.5k
1710C
XOR Triangle
bitmasks
brute force
constructive algorithms
dp
greedy
math
+
2500
1.7k
1688B
Patchouli's Magical Talisman
bitmasks
constructive algorithms
greedy
sortings
+
800
19.2k
1673F
Anti-Theft Road Planning
bitmasks
constructive algorithms
divide and conquer
greedy
interactive
math
+
2400
979
1659B
Bit Flipping
bitmasks
constructive algorithms
greedy
strings
+
1300
12.1k
1605D
Treelabeling
bitmasks
constructive algorithms
dfs and similar
games
greedy
implementation
trees
+
2100
3.3k
1566B
MIN-MEX Cut
bitmasks
constructive algorithms
dp
greedy
+
800
21.4k
1566C
MAX-MEX Cut
bitmasks
constructive algorithms
dp
greedy
+
1000
19.2k
1560F1
Nearest Beautiful Number (easy version)
binary search
bitmasks
brute force
constructive algorithms
dfs and similar
greedy
+
1900
6.8k
1560F2
Nearest Beautiful Number (hard version)
bitmasks
brute force
constructive algorithms
dfs and similar
dp
greedy
+
2100
5.1k
1547D
Co-growing Sequence
bitmasks
constructive algorithms
greedy
+
1300
18.8k
1543E
The Final Pursuit
bitmasks
constructive algorithms
divide and conquer
graphs
greedy
math
+
2700
499
1500C
Matrix Sorting
bitmasks
brute force
constructive algorithms
greedy
two pointers
+
2600
983
1493E
Enormous XOR
bitmasks
constructive algorithms
greedy
math
strings
two pointers
+
2600
1.1k
1492D
Genius's Gambit
bitmasks
constructive algorithms
greedy
math
+
1900
6.5k
1491D
Zookeeper and The Infinite Zoo
bitmasks
constructive algorithms
dp
greedy
math
+
1800
8.5k
1463B
Find The Array
bitmasks
constructive algorithms
greedy
+
1400
21.3k
1391D
505
bitmasks
brute force
constructive algorithms
dp
greedy
implementation
+
2000
5.8k
1383B
GameGame
bitmasks
constructive algorithms
dp
games
greedy
math
+
1900
5.6k
1338B
Edge Weight Assignment
bitmasks
constructive algorithms
dfs and similar
greedy
math
trees
+
1800
9.7k
1325D
Ehab the Xorcist
bitmasks
constructive algorithms
greedy
number theory
+
1700
13.8k
1225G
To Make 1
bitmasks
constructive algorithms
dp
greedy
number theory
+
3100
665
960C
Subsequence Counting
bitmasks
constructive algorithms
greedy
implementation
+
1700
4.2k
429C
Guess the Tree
bitmasks
constructive algorithms
dp
greedy
trees
+
2300
1.1k
356D
Bags and Coins
bitmasks
constructive algorithms
dp
greedy
+
2700
1.1k
showing 1–64 of 64