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48 problems · filtered by 3 tags
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2242E
Product of Closures
bitmasks
brute force
constructive algorithms
greedy
implementation
math
number theory
+
2200
1.4k
2234D
XOR, Expression and Two Binary Numbers
bitmasks
divide and conquer
dp
math
number theory
+
1500
8.6k
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
11.6k
2176F
Omega Numbers
bitmasks
combinatorics
dp
math
number theory
+
2400
1.6k
2125C
Count Good Numbers
bitmasks
combinatorics
math
number theory
+
1100
23.3k
2109C1
Hacking Numbers (Easy Version)
bitmasks
constructive algorithms
interactive
math
number theory
+
1500
11.8k
2072F
Goodbye, Banker Life
2-sat
bitmasks
combinatorics
constructive algorithms
fft
math
number theory
+
1700
8.7k
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
2037G
Natlan Exploring
bitmasks
combinatorics
data structures
dp
math
number theory
+
2000
3.9k
2020A
Find Minimum Operations
bitmasks
brute force
greedy
math
number theory
+
800
26.2k
1991D
Prime XOR Coloring
bitmasks
constructive algorithms
graphs
greedy
math
number theory
+
1900
8k
1991H
Prime Split Game
bitmasks
dp
fft
games
math
number theory
+
3300
580
1926E
Vlad and an Odd Ordering
binary search
bitmasks
data structures
dp
implementation
math
number theory
+
1500
15.2k
1909B
Make Almost Equal With Mod
bitmasks
constructive algorithms
math
number theory
+
1200
33.3k
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
1875C
Jellyfish and Green Apple
bitmasks
greedy
math
number theory
+
1400
14.1k
1864C
Divisor Chain
bitmasks
constructive algorithms
math
number theory
+
1300
15.5k
1844G
Tree Weights
bitmasks
constructive algorithms
data structures
dfs and similar
implementation
math
matrices
number theory
trees
+
3000
1.2k
1770F
Koxia and Sequence
bitmasks
combinatorics
dp
math
number theory
+
3100
1k
1748D
ConstructOR
bitmasks
chinese remainder theorem
combinatorics
constructive algorithms
math
number theory
+
2100
3.3k
1731C
Even Subarrays
bitmasks
brute force
hashing
math
number theory
+
1700
12.5k
1698G
Long Binary String
bitmasks
math
matrices
meet-in-the-middle
number theory
+
2900
397
1673E
Power or XOR?
bitmasks
combinatorics
math
number theory
+
2500
850
1665D
GCD Guess
bitmasks
chinese remainder theorem
constructive algorithms
games
interactive
math
number theory
+
2000
4.8k
1635D
Infinite Set
bitmasks
dp
math
matrices
number theory
strings
+
1800
7.1k
1601A
Array Elimination
bitmasks
greedy
math
number theory
+
1300
22.3k
1548D1
Gregor and the Odd Cows (Easy)
bitmasks
geometry
math
number theory
+
2300
1.6k
1470B
Strange Definition
bitmasks
graphs
hashing
math
number theory
+
1900
6.8k
1427E
Xum
bitmasks
constructive algorithms
math
matrices
number theory
+
2500
1.7k
1398G
Running Competition
bitmasks
fft
math
number theory
+
2600
1.3k
1312C
Adding Powers
bitmasks
greedy
implementation
math
number theory
ternary search
+
1400
18.5k
1220D
Alex and Julian
bitmasks
math
number theory
+
1900
4.2k
1166E
The LCMs Must be Large
bitmasks
brute force
constructive algorithms
math
number theory
+
2100
3k
1144E
Median String
bitmasks
math
number theory
strings
+
1900
4.5k
1114F
Please, another Queries on Array?
bitmasks
data structures
divide and conquer
math
number theory
+
2400
2.6k
1043F
Make It One
bitmasks
combinatorics
dp
math
number theory
shortest paths
+
2500
3.1k
1027G
X-mouse in the Campus
bitmasks
math
number theory
+
2600
386
1016G
Appropriate Team
bitmasks
math
number theory
+
2700
364
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
900D
Unusual Sequences
bitmasks
combinatorics
dp
math
number theory
+
2000
3.9k
724G
Xor-matic Number of the Graph
bitmasks
graphs
math
number theory
trees
+
2600
1.6k
633G
Yash And Trees
bitmasks
data structures
dfs and similar
math
number theory
+
2800
933
547C
Mike and Foam
bitmasks
combinatorics
dp
math
number theory
+
2300
3.5k
showing 1–48 of 48