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68 problems · filtered by 3 tags
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Rating
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2242E
Product of Closures
bitmasks
brute force
constructive algorithms
greedy
implementation
math
number theory
+
2200
1.4k
2225D
Exceptional Segments
bitmasks
brute force
math
+
1500
8.3k
2205G
Simons and Diophantus Equation
bitmasks
brute force
data structures
math
number theory
+
3000
231
2194C
Secret message
bitmasks
brute force
dp
math
number theory
+
1300
11.7k
2182F1
Christmas Reindeer (easy version)
bitmasks
brute force
combinatorics
dp
math
+
2300
1.3k
2182F2
Christmas Reindeer (hard version)
bitmasks
brute force
combinatorics
data structures
greedy
math
+
2500
1.1k
2173D
Taiga's Carry Chains
bitmasks
brute force
dp
greedy
math
+
1900
3.8k
2170A
Maximum Neighborhood
bitmasks
brute force
greedy
implementation
math
+
800
20.6k
2157G
Isaac's Queries
bitmasks
brute force
constructive algorithms
dfs and similar
divide and conquer
dp
greedy
interactive
math
probabilities
+
2800
678
2131G
Wafu!
bitmasks
brute force
data structures
dfs and similar
dp
math
+
2000
3.9k
2086E
Zebra-like Numbers
bitmasks
brute force
constructive algorithms
dfs and similar
dp
greedy
math
+
2400
1.7k
2075D
Equalization
bitmasks
brute force
dp
graphs
math
+
2000
6k
2071D1
Infinite Sequence (Easy Version)
bitmasks
brute force
dp
implementation
math
+
1800
6.9k
2071D2
Infinite Sequence (Hard Version)
bitmasks
brute force
constructive algorithms
data structures
dp
implementation
math
+
2500
1.1k
2061E
Kevin and And
bitmasks
brute force
dp
greedy
math
sortings
+
2000
4.1k
2056F1
Xor of Median (Easy Version)
bitmasks
brute force
combinatorics
dp
math
+
2700
455
2056F2
Xor of Median (Hard Version)
bitmasks
brute force
combinatorics
dp
math
+
3000
362
2039C1
Shohag Loves XOR (Easy Version)
bitmasks
brute force
math
number theory
+
1200
13.8k
2039C2
Shohag Loves XOR (Hard Version)
bitmasks
brute force
math
number theory
+
1800
5.1k
2027E1
Bit Game (Easy Version)
bitmasks
brute force
games
math
+
2800
270
2020A
Find Minimum Operations
bitmasks
brute force
greedy
math
number theory
+
800
26.3k
1994G
Minecraft
bitmasks
brute force
dp
graphs
math
+
2600
1.7k
1982E
Number of k-good subarrays
bitmasks
brute force
combinatorics
divide and conquer
dp
math
meet-in-the-middle
+
2300
1.9k
1981C
Turtle and an Incomplete Sequence
bitmasks
brute force
constructive algorithms
greedy
implementation
math
+
1800
6.4k
1975F
Set
bitmasks
brute force
combinatorics
dfs and similar
divide and conquer
dp
math
+
2600
1.1k
1967C
Fenwick Tree
bitmasks
brute force
combinatorics
data structures
dp
math
trees
+
2300
2.3k
1957D
A BIT of an Inequality
bitmasks
brute force
dp
math
+
1900
6k
1956D
Nene and the Mex Operator
bitmasks
brute force
constructive algorithms
divide and conquer
dp
greedy
implementation
math
+
2000
4.9k
1935E
Distance Learning Courses in MAC
bitmasks
brute force
data structures
greedy
math
+
2400
1.7k
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
brute force
combinatorics
constructive algorithms
dfs and similar
math
+
2300
1.2k
1929E
Sasha and the Happy Tree Cutting
bitmasks
brute force
dfs and similar
dp
graphs
greedy
math
trees
+
2300
2.1k
1909E
Multiple Lamps
bitmasks
brute force
constructive algorithms
math
number theory
+
2400
1.7k
1900D
Small GCD
bitmasks
brute force
dp
math
number theory
+
2000
5.6k
1835C
Twin Clusters
bitmasks
brute force
constructive algorithms
math
probabilities
+
2600
1.2k
1767E
Algebra Flash
bitmasks
brute force
dp
graphs
math
meet-in-the-middle
trees
+
2500
1.3k
1742G
Orray
bitmasks
brute force
greedy
math
sortings
+
1500
13.7k
1731C
Even Subarrays
bitmasks
brute force
hashing
math
number theory
+
1700
12.5k
1728G
Illumination
binary search
bitmasks
brute force
combinatorics
dp
math
two pointers
+
2700
669
1710C
XOR Triangle
bitmasks
brute force
constructive algorithms
dp
greedy
math
+
2500
1.7k
1709F
Multiset of Strings
bitmasks
brute force
dp
fft
flows
graphs
math
meet-in-the-middle
trees
+
2500
729
1703G
Good Key, Bad Key
bitmasks
brute force
dp
greedy
math
+
1600
13k
1658D2
388535 (Hard Version)
bitmasks
brute force
data structures
math
+
2300
3.2k
1646C
Factorials and Powers of Two
bitmasks
brute force
constructive algorithms
dp
math
+
1500
20.5k
1641D
Two Arrays
bitmasks
brute force
combinatorics
greedy
hashing
math
two pointers
+
2700
1.6k
1632C
Strange Test
binary search
bitmasks
brute force
dp
math
+
1600
14.2k
1554B
Cobb
bitmasks
brute force
greedy
math
+
1700
13.9k
1552D
Array Differentiation
bitmasks
brute force
constructive algorithms
dfs and similar
dp
graphs
math
+
1800
8k
1543C
Need for Pink Slips
bitmasks
brute force
dfs and similar
implementation
math
probabilities
+
1900
5.7k
1466E
Apollo versus Pan
bitmasks
brute force
math
+
1800
8.5k
1400G
Mercenaries
bitmasks
brute force
combinatorics
dp
dsu
math
two pointers
+
2600
1.2k
1338C
Perfect Triples
bitmasks
brute force
constructive algorithms
divide and conquer
math
+
2200
3.5k
1336E1
Chiori and Doll Picking (easy version)
bitmasks
brute force
combinatorics
math
+
2700
904
1336E2
Chiori and Doll Picking (hard version)
bitmasks
brute force
combinatorics
math
+
3500
707
1225C
p-binary
bitmasks
brute force
math
+
1600
9.9k
1166E
The LCMs Must be Large
bitmasks
brute force
constructive algorithms
math
number theory
+
2100
3k
1163E
Magical Permutation
bitmasks
brute force
constructive algorithms
data structures
graphs
math
+
2400
1.1k
1033F
Boolean Computer
bitmasks
brute force
fft
math
+
2800
500
1007B
Pave the Parallelepiped
bitmasks
brute force
combinatorics
math
number theory
+
2400
1.1k
979D
Kuro and GCD and XOR and SUM
binary search
bitmasks
brute force
data structures
dp
dsu
greedy
math
number theory
strings
trees
+
2200
2.3k
920G
List Of Integers
binary search
bitmasks
brute force
combinatorics
math
number theory
+
2200
2.1k
865F
Egg Roulette
bitmasks
brute force
divide and conquer
math
meet-in-the-middle
+
3300
81
850E
Random Elections
bitmasks
brute force
divide and conquer
fft
math
+
2800
570
662C
Binary Table
bitmasks
brute force
divide and conquer
dp
fft
math
+
2600
2.6k
581D
Three Logos
bitmasks
brute force
constructive algorithms
geometry
implementation
math
+
1700
4.9k
525E
Anya and Cubes
binary search
bitmasks
brute force
dp
math
meet-in-the-middle
+
2100
4.4k
510D
Fox And Jumping
bitmasks
brute force
dp
math
+
1900
6.5k
476B
Dreamoon and WiFi
bitmasks
brute force
combinatorics
dp
math
probabilities
+
1300
38k
217D
Bitonix' Patrol
bitmasks
brute force
combinatorics
dfs and similar
math
+
2900
282
showing 1–68 of 68