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41 problems · filtered by 3 tags
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✎
Rating
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2157G
Isaac's Queries
bitmasks
brute force
constructive algorithms
dfs and similar
divide and conquer
dp
greedy
interactive
math
probabilities
+
2800
672
2144F
Bracket Groups
brute force
constructive algorithms
dp
string suffix structures
strings
+
2700
1.1k
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
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
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
2071D2
Infinite Sequence (Hard Version)
bitmasks
brute force
constructive algorithms
data structures
dp
implementation
math
+
2500
1.1k
2064C
Remove the Ends
brute force
constructive algorithms
dp
greedy
+
1300
18.1k
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
1955H
The Most Reckless Defense
bitmasks
brute force
constructive algorithms
dp
flows
graph matchings
shortest paths
+
2300
1.6k
1948C
Arrow Path
brute force
constructive algorithms
dfs and similar
dp
graphs
shortest paths
+
1300
21.5k
1935C
Messenger in MAC
binary search
brute force
constructive algorithms
data structures
dp
greedy
sortings
+
1800
9.9k
1928E
Modular Sequence
brute force
constructive algorithms
dp
graphs
greedy
math
number theory
+
2300
2.3k
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
1774G
Segment Covering
brute force
combinatorics
constructive algorithms
data structures
dp
trees
+
3200
692
1710C
XOR Triangle
bitmasks
brute force
constructive algorithms
dp
greedy
math
+
2500
1.7k
1706D2
Chopping Carrots (Hard Version)
brute force
constructive algorithms
data structures
dp
greedy
math
number theory
two pointers
+
2400
2k
1704E
Count Seconds
brute force
constructive algorithms
dp
graphs
implementation
math
+
2200
2.7k
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
1646C
Factorials and Powers of Two
bitmasks
brute force
constructive algorithms
dp
math
+
1500
20.5k
1624E
Masha-forgetful
brute force
constructive algorithms
dp
hashing
implementation
strings
+
2000
4.7k
1560F2
Nearest Beautiful Number (hard version)
bitmasks
brute force
constructive algorithms
dfs and similar
dp
greedy
+
2100
5.1k
1555C
Coin Rows
brute force
constructive algorithms
dp
implementation
+
1300
24.4k
1555D
Say No to Palindromes
brute force
constructive algorithms
dp
strings
+
1600
16k
1552D
Array Differentiation
bitmasks
brute force
constructive algorithms
dfs and similar
dp
graphs
math
+
1800
8k
1486E
Paired Payment
binary search
brute force
constructive algorithms
dp
flows
graphs
shortest paths
+
2200
3.5k
1391D
505
bitmasks
brute force
constructive algorithms
dp
greedy
implementation
+
2000
5.8k
1373E
Sum of Digits
brute force
constructive algorithms
dp
greedy
+
2200
3k
1366E
Two Arrays
binary search
brute force
combinatorics
constructive algorithms
dp
two pointers
+
2100
4.7k
1360F
Spy-string
bitmasks
brute force
constructive algorithms
dp
hashing
strings
+
1700
13.7k
1286F
Harry The Potter
brute force
constructive algorithms
dp
fft
implementation
math
+
3100
411
1285E
Delete a Segment
brute force
constructive algorithms
data structures
dp
graphs
sortings
trees
two pointers
+
2300
2k
1244D
Paint the Tree
brute force
constructive algorithms
dp
graphs
implementation
trees
+
1800
8.4k
1151B
Dima and a Bad XOR
bitmasks
brute force
constructive algorithms
dp
+
1600
13.1k
868C
Qualification Rounds
bitmasks
brute force
constructive algorithms
dp
+
1500
5.1k
754C
Vladik and chat
brute force
constructive algorithms
dp
implementation
strings
+
2200
1.1k
424D
Biathlon Track
binary search
brute force
constructive algorithms
data structures
dp
+
2300
639
showing 1–41 of 41