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137 problems · filtered by 3 tags
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Name
✎
Rating
↕
Solved
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2242E
Product of Closures
bitmasks
brute force
constructive algorithms
greedy
implementation
math
number theory
+
2200
1.4k
2231F
Quadratic Jumps
brute force
constructive algorithms
greedy
math
number theory
+
2600
787
2227D
Palindromex
binary search
brute force
constructive algorithms
data structures
greedy
implementation
two pointers
+
1200
13.9k
2181E
Elevator Against Humanity
brute force
constructive algorithms
greedy
sortings
+
2900
160
2173C
Kanade's Perfect Multiples
brute force
constructive algorithms
greedy
number theory
+
1400
13.2k
2157G
Isaac's Queries
bitmasks
brute force
constructive algorithms
dfs and similar
divide and conquer
dp
greedy
interactive
math
probabilities
+
2800
672
2156A
Pizza Time
brute force
constructive algorithms
greedy
+
800
27.5k
2146E
Yet Another MEX Problem
brute force
constructive algorithms
data structures
divide and conquer
greedy
hashing
+
2300
2.2k
2131H
Sea, You & copriMe
brute force
constructive algorithms
graphs
greedy
math
number theory
+
2600
909
2115B
Gellyfish and Camellia Japonica
brute force
constructive algorithms
dfs and similar
dp
graphs
greedy
trees
+
2100
5k
2114G
Build an Array
brute force
constructive algorithms
dp
greedy
math
number theory
+
2200
2.1k
2113C
Smilo and Minecraft
brute force
constructive algorithms
greedy
+
1700
8.2k
2111F
Puzzle
brute force
constructive algorithms
greedy
math
+
2400
1.5k
2104C
Card Game
brute force
constructive algorithms
games
greedy
math
+
1100
17.8k
2092D
Mishkin Energizer
brute force
constructive algorithms
greedy
implementation
strings
+
1800
7k
2092F
Andryusha and CCB
brute force
constructive algorithms
greedy
math
number theory
strings
+
2900
438
2091G
Gleb and Boating
brute force
constructive algorithms
data structures
dp
graphs
greedy
math
number theory
shortest paths
+
2300
1.6k
2086E
Zebra-like Numbers
bitmasks
brute force
constructive algorithms
dfs and similar
dp
greedy
math
+
2400
1.7k
2084D
Arcology On Permafrost
binary search
brute force
constructive algorithms
greedy
math
+
1600
9.1k
2072E
Do You Love Your Hero and His Two-Hit Multi-Target Attacks?
binary search
brute force
constructive algorithms
dp
geometry
greedy
math
+
1500
12.6k
2071B
Perfecto
brute force
constructive algorithms
greedy
math
+
1100
21.3k
2065A
Skibidus and Amog'u
brute force
constructive algorithms
greedy
implementation
strings
+
800
56.9k
2064C
Remove the Ends
brute force
constructive algorithms
dp
greedy
+
1300
18.1k
2059B
Cost of the Array
brute force
constructive algorithms
greedy
math
+
1300
19.1k
2059C
Customer Service
brute force
constructive algorithms
graph matchings
greedy
math
sortings
+
1600
12.8k
2059E1
Stop Gaming (Easy Version)
brute force
constructive algorithms
greedy
hashing
strings
+
2500
907
2055C
The Trail
brute force
constructive algorithms
greedy
math
two pointers
+
1400
17.6k
2055E
Haystacks
brute force
constructive algorithms
data structures
greedy
sortings
+
2800
496
2049C
MEX Cycle
brute force
constructive algorithms
greedy
implementation
+
1500
13.9k
2040D
Non Prime Tree
brute force
constructive algorithms
dfs and similar
greedy
number theory
trees
two pointers
+
1900
5.9k
2035E
Monster
binary search
brute force
constructive algorithms
greedy
implementation
math
ternary search
+
2300
2k
2033B
Sakurako and Water
brute force
constructive algorithms
greedy
+
900
29.3k
2026B
Black Cells
binary search
brute force
constructive algorithms
greedy
+
1300
16.8k
2026C
Action Figures
binary search
brute force
constructive algorithms
data structures
greedy
implementation
+
1500
12.9k
2008A
Sakurako's Exam
brute force
constructive algorithms
greedy
math
+
800
42.3k
2001D
Longest Max Min Subsequence
brute force
constructive algorithms
data structures
greedy
implementation
+
1900
6.6k
1998C
Perform Operations to Maximize Score
binary search
brute force
constructive algorithms
greedy
implementation
+
1900
7.2k
1995C
Squaring
brute force
constructive algorithms
greedy
implementation
math
number theory
+
1800
10.4k
1992A
Only Pluses
brute force
constructive algorithms
greedy
math
sortings
+
800
50.1k
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
1956D
Nene and the Mex Operator
bitmasks
brute force
constructive algorithms
divide and conquer
dp
greedy
implementation
math
+
2000
4.9k
1951E
No Palindromes
brute force
constructive algorithms
divide and conquer
greedy
hashing
implementation
math
strings
+
2000
4.6k
1948E
Clique Partition
brute force
constructive algorithms
graphs
greedy
implementation
+
2100
3.6k
1946D
Birthday Gift
bitmasks
brute force
constructive algorithms
greedy
implementation
+
1900
5.7k
1935C
Messenger in MAC
binary search
brute force
constructive algorithms
data structures
dp
greedy
sortings
+
1800
9.9k
1929C
Sasha and the Casino
binary search
brute force
constructive algorithms
games
greedy
math
+
1400
17.5k
1928E
Modular Sequence
brute force
constructive algorithms
dp
graphs
greedy
math
number theory
+
2300
2.3k
1907G
Lights
brute force
constructive algorithms
dfs and similar
graphs
greedy
implementation
+
2200
2.4k
1904D1
Set To Max (Easy Version)
brute force
constructive algorithms
greedy
+
1600
8.8k
1903B
StORage room
bitmasks
brute force
constructive algorithms
greedy
+
1200
15k
1902C
Insert and Equalize
brute force
constructive algorithms
greedy
math
number theory
+
1300
17.5k
1887C
Minimum Array
binary search
brute force
constructive algorithms
data structures
greedy
hashing
two pointers
+
2400
2.3k
1882B
Sets and Union
bitmasks
brute force
constructive algorithms
greedy
+
1300
17.6k
1882E1
Two Permutations (Easy Version)
brute force
constructive algorithms
greedy
number theory
+
2400
1.3k
1867D
Cyclic Operations
brute force
constructive algorithms
dfs and similar
graphs
greedy
implementation
+
1800
6.9k
1867F
Most Different Tree
brute force
constructive algorithms
dfs and similar
greedy
hashing
+
2700
554
1864D
Matrix Cascade
brute force
constructive algorithms
data structures
dp
greedy
math
+
1700
7.7k
1854E
Game Bundles
brute force
constructive algorithms
dp
greedy
math
+
3000
575
1844F1
Min Cost Permutation (Easy Version)
brute force
constructive algorithms
greedy
math
+
2600
937
1833D
Flipper
brute force
constructive algorithms
greedy
+
1400
15.3k
1800E1
Unforgivable Curse (easy version)
brute force
constructive algorithms
dsu
graphs
greedy
strings
+
1400
15.9k
1800E2
Unforgivable Curse (hard version)
brute force
constructive algorithms
dfs and similar
dsu
graphs
greedy
strings
+
1500
15.6k
1799B
Equalize by Divide
brute force
constructive algorithms
greedy
math
+
1200
12.9k
1781C
Equal Frequencies
brute force
constructive algorithms
greedy
implementation
sortings
strings
+
1600
11k
1774D
Same Count One
brute force
constructive algorithms
greedy
implementation
two pointers
+
1600
9.4k
1763C
Another Array Problem
brute force
constructive algorithms
greedy
+
2000
8k
1761E
Make It Connected
binary search
brute force
constructive algorithms
dsu
graphs
greedy
matrices
trees
two pointers
+
2400
2.2k
1710C
XOR Triangle
bitmasks
brute force
constructive algorithms
dp
greedy
math
+
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
1697E
Coloring
brute force
combinatorics
constructive algorithms
dp
geometry
graphs
greedy
implementation
math
+
2400
1.5k
1695D1
Tree Queries (Easy Version)
brute force
constructive algorithms
dfs and similar
dp
greedy
trees
+
2200
2.5k
1691C
Sum of Substrings
brute force
constructive algorithms
greedy
math
strings
+
1400
17.4k
1685C
Bring Balance
brute force
constructive algorithms
greedy
+
2600
1.4k
1684C
Column Swapping
brute force
constructive algorithms
greedy
implementation
sortings
+
1400
13.3k
1684E
MEX vs DIFF
binary search
brute force
constructive algorithms
data structures
greedy
two pointers
+
2100
3.7k
1674E
Breaking the Wall
binary search
brute force
constructive algorithms
greedy
math
+
2000
7.8k
1671D
Insert a Progression
brute force
constructive algorithms
greedy
+
1600
8.5k
1660E
Matrix and Shifts
brute force
constructive algorithms
greedy
implementation
+
1600
8.2k
1658F
Juju and Binary String
brute force
constructive algorithms
greedy
math
+
2700
1k
1651E
Sum of Matchings
brute force
combinatorics
constructive algorithms
dfs and similar
graph matchings
greedy
math
+
2600
669
1646B
Quality vs Quantity
brute force
constructive algorithms
greedy
sortings
two pointers
+
800
22.9k
1620D
Exact Change
brute force
constructive algorithms
greedy
+
2000
4.9k
1619F
Let's Play the Hat?
brute force
constructive algorithms
greedy
math
+
2000
2.4k
1614A
Divan and a Store
brute force
constructive algorithms
greedy
+
800
24.7k
1572B
Xor of 3
brute force
constructive algorithms
greedy
two pointers
+
2500
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
1559D1
Mocha and Diana (Easy Version)
brute force
constructive algorithms
dsu
graphs
greedy
trees
+
1400
16.5k
1559D2
Mocha and Diana (Hard Version)
brute force
constructive algorithms
dfs and similar
dsu
graphs
greedy
trees
two pointers
+
2500
3.2k
1511D
Min Cost String
brute force
constructive algorithms
graphs
greedy
strings
+
1600
12.6k
1500C
Matrix Sorting
bitmasks
brute force
constructive algorithms
greedy
two pointers
+
2600
983
1496A
Split it!
brute force
constructive algorithms
greedy
strings
+
900
22.4k
1493C
K-beautiful Strings
binary search
brute force
constructive algorithms
greedy
strings
+
2000
5k
1492E
Almost Fault-Tolerant Database
brute force
constructive algorithms
dfs and similar
greedy
implementation
+
2500
1.3k
1487C
Minimum Ties
brute force
constructive algorithms
dfs and similar
graphs
greedy
implementation
math
+
1500
15.6k
1482C
Basic Diplomacy
brute force
constructive algorithms
greedy
implementation
+
1600
10.1k
1481C
Fence Painting
brute force
constructive algorithms
greedy
+
1600
12.5k
1481D
AB Graph
brute force
constructive algorithms
graphs
greedy
implementation
+
2000
4.9k
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