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Problemset
237 problems · filtered by 2 tags
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Name
✎
Rating
↕
Solved
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1781D
Many Perfect Squares
brute force
math
number theory
+
1800
6.4k
1780B
GCD Partition
brute force
greedy
math
number theory
+
1100
27.4k
1780E
Josuke and Complete Graph
binary search
brute force
data structures
math
number theory
+
2400
1.8k
1780F
Three Chairs
bitmasks
brute force
combinatorics
data structures
dp
number theory
sortings
+
2300
2k
1770C
Koxia and Number Theory
brute force
chinese remainder theorem
math
number theory
+
1700
9.8k
1759D
Make It Round
brute force
number theory
+
1400
21.4k
1744E1
Divisible Numbers (easy version)
brute force
math
number theory
+
1500
13k
1744E2
Divisible Numbers (hard version)
brute force
math
number theory
+
1900
7k
1742D
Coprime
brute force
greedy
number theory
+
1100
36k
1732A
Bestie
brute force
combinatorics
constructive algorithms
implementation
math
number theory
+
1000
17.8k
1732D1
Balance (Easy version)
brute force
data structures
implementation
number theory
+
1500
10k
1732D2
Balance (Hard version)
brute force
data structures
number theory
+
2400
1.6k
1731C
Even Subarrays
bitmasks
brute force
hashing
math
number theory
+
1700
12.5k
1728E
Red-Black Pepper
brute force
data structures
greedy
math
number theory
+
2300
2.1k
1714E
Add Modulo 10
brute force
math
number theory
+
1400
24.6k
1712E1
LCM Sum (easy version)
binary search
brute force
combinatorics
math
number theory
two pointers
+
2300
2.5k
1712E2
LCM Sum (hard version)
brute force
data structures
math
number theory
two pointers
+
2500
1.7k
1706D1
Chopping Carrots (Easy Version)
binary search
brute force
constructive algorithms
greedy
number theory
+
1700
7.8k
1706D2
Chopping Carrots (Hard Version)
brute force
constructive algorithms
data structures
dp
greedy
math
number theory
two pointers
+
2400
2k
1679A
AvtoBus
brute force
greedy
math
number theory
+
900
43k
1673C
Palindrome Basis
brute force
dp
math
number theory
+
1500
18.9k
1646E
Power Board
brute force
dp
math
number theory
+
2200
2.8k
1627D
Not Adding
brute force
dp
math
number theory
+
1900
9.5k
1617B
GCD Problem
brute force
constructive algorithms
math
number theory
+
900
27.2k
1593D2
Half of Same
brute force
math
number theory
+
1900
5.6k
1579F
Array Stabilization (AND version)
brute force
graphs
math
number theory
shortest paths
+
1700
5.4k
1562B
Scenes From a Memory
brute force
constructive algorithms
implementation
math
number theory
+
1000
20.7k
1561D1
Up the Strip (simplified version)
brute force
data structures
dp
math
number theory
+
1700
6.2k
1558B
Up the Strip
brute force
dp
math
number theory
two pointers
+
1900
5.3k
1553G
Common Divisor Graph
brute force
constructive algorithms
dsu
graphs
hashing
math
number theory
+
2700
1.3k
1548D2
Gregor and the Odd Cows (Hard)
brute force
geometry
math
number theory
+
3300
346
1547F
Array Stabilization (GCD version)
binary search
brute force
data structures
divide and conquer
number theory
two pointers
+
1900
7.2k
1541B
Pleasant Pairs
brute force
implementation
math
number theory
+
1200
40.3k
1535B
Array Reodering
brute force
greedy
math
number theory
sortings
+
900
34.5k
1520B
Ordinary Numbers
brute force
math
number theory
+
800
50.3k
1519C
Berland Regional
brute force
data structures
greedy
number theory
sortings
+
1400
23.4k
1515B
Phoenix and Puzzle
brute force
geometry
math
number theory
+
1000
27.3k
1512G
Short Task
brute force
dp
math
number theory
+
1700
9.6k
1500B
Two chandeliers
binary search
brute force
chinese remainder theorem
math
number theory
+
2200
2.4k
1493D
GCD of an Array
brute force
data structures
hashing
implementation
math
number theory
sortings
two pointers
+
2100
5.9k
1491E
Fib-tree
brute force
dfs and similar
divide and conquer
number theory
trees
+
2400
2.4k
1487D
Pythagorean Triples
binary search
brute force
math
number theory
+
1500
20.9k
1485A
Add and Divide
brute force
greedy
math
number theory
+
1000
35.1k
1485C
Floor and Mod
binary search
brute force
math
number theory
+
1700
11.2k
1473B
String LCM
brute force
math
number theory
strings
+
1000
35.5k
1469D
Ceil Divisions
brute force
constructive algorithms
math
number theory
+
1700
10.3k
1444A
Division
brute force
math
number theory
+
1500
14.6k
1411B
Fair Numbers
brute force
number theory
+
1000
32.4k
1409C
Yet Another Array Restoration
brute force
math
number theory
+
1200
24.8k
1407B
Big Vova
brute force
greedy
math
number theory
+
1300
18.2k
1397B
Power Sequence
brute force
math
number theory
sortings
+
1500
15.6k
1388A
Captain Flint and Crew Recruitment
brute force
greedy
math
number theory
+
800
26k
1379B
Dubious Cyrpto
binary search
brute force
math
number theory
+
1500
13.2k
1371E1
Asterism (Easy Version)
binary search
brute force
combinatorics
math
number theory
sortings
+
1900
5.5k
1367E
Necklace Assembly
brute force
dfs and similar
dp
graphs
greedy
number theory
+
1900
5.9k
1364A
XXXXX
brute force
data structures
number theory
two pointers
+
1200
31.9k
1332B
Composite Coloring
brute force
constructive algorithms
greedy
math
number theory
+
1400
19.3k
1327D
Infinite Path
brute force
dfs and similar
graphs
math
number theory
+
2200
3.6k
1325E
Ehab's REAL Number Theory Problem
brute force
dfs and similar
graphs
number theory
shortest paths
+
2600
2.4k
1305C
Kuroni and Impossible Calculation
brute force
combinatorics
math
number theory
+
1600
19.7k
1285C
Fadi and LCM
brute force
math
number theory
+
1400
28.8k
1244C
The Football Season
brute force
math
number theory
+
2000
8.4k
1200F
Graph Traveler
brute force
data structures
dfs and similar
dp
graphs
implementation
math
number theory
+
2300
1.2k
1184A1
Heidi Learns Hashing (Easy)
brute force
math
number theory
+
1200
6.6k
1184A2
Heidi Learns Hashing (Medium)
brute force
number theory
+
2100
1.2k
1166E
The LCMs Must be Large
bitmasks
brute force
constructive algorithms
math
number theory
+
2100
3k
1154G
Minimum Possible LCM
brute force
greedy
math
number theory
+
2200
3.4k
1152C
Neko does Maths
brute force
math
number theory
+
1800
7.1k
1143B
Nirvana
brute force
math
number theory
+
1200
11.7k
1114C
Trailing Loves (or L'oeufs?)
brute force
implementation
math
number theory
+
1700
8k
1108B
Divisors of Two Integers
brute force
greedy
math
number theory
+
1100
25.4k
1029F
Multicolored Markers
binary search
brute force
math
number theory
+
2000
2.9k
1025B
Weakened Common Divisor
brute force
greedy
number theory
+
1600
8.6k
1025D
Recovering BST
brute force
dp
math
number theory
trees
+
2100
4.3k
1007B
Pave the Parallelepiped
bitmasks
brute force
combinatorics
math
number theory
+
2400
1.1k
986E
Prince's Problem
brute force
data structures
math
number theory
trees
+
2800
957
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
963C
Cutting Rectangle
brute force
math
number theory
+
2600
702
937B
Vile Grasshoppers
brute force
math
number theory
+
1400
7.3k
922C
Cave Painting
brute force
number theory
+
1600
7.7k
920F
SUM and REPLACE
brute force
data structures
dsu
number theory
+
2000
9k
920G
List Of Integers
binary search
bitmasks
brute force
combinatorics
math
number theory
+
2200
2.1k
919B
Perfect Number
binary search
brute force
dp
implementation
number theory
+
1100
32k
898B
Proper Nutrition
brute force
implementation
number theory
+
1100
10.8k
891A
Pride
brute force
dp
greedy
math
number theory
+
1500
15k
858A
k-rounding
brute force
math
number theory
+
1100
9.4k
830C
Bamboo Partition
brute force
data structures
implementation
math
number theory
sortings
two pointers
+
2300
1.3k
822D
My pretty girl Noora
brute force
dp
greedy
math
number theory
+
1800
3.3k
787A
The Monster
brute force
math
number theory
+
1200
12.3k
768F
Barrels and boxes
brute force
combinatorics
math
number theory
probabilities
+
2300
1.2k
765G
Math, math everywhere
brute force
dp
math
meet-in-the-middle
number theory
+
3200
119
763C
Timofey and remoduling
brute force
implementation
math
number theory
+
2600
816
758B
Blown Garland
brute force
implementation
number theory
+
1100
10.8k
758F
Geometrical Progression
brute force
math
number theory
+
2400
760
757E
Bash Plays with Functions
brute force
combinatorics
dp
number theory
+
2500
1.6k
755A
PolandBall and Hypothesis
brute force
graphs
math
number theory
+
800
20.1k
743C
Vladik and fractions
brute force
constructive algorithms
math
number theory
+
1500
13.6k
742B
Arpa’s obvious problem and Mehrdad’s terrible solution
brute force
math
number theory
+
1500
10.1k
731F
Video Cards
brute force
data structures
implementation
math
number theory
+
1900
3.2k
691F
Couple Cover
brute force
dp
number theory
+
2200
1.5k
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