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67 problems · filtered by 3 tags
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Name
✎
Rating
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2236G
Criterion in Burlandia
binary search
bitmasks
brute force
data structures
dfs and similar
divide and conquer
implementation
trees
two pointers
+
2600
385
2210F
A Simple Problem
binary search
data structures
greedy
math
trees
+
2700
263
2195G
Idiot First Search and Queries
binary search
data structures
dp
graphs
trees
+
2300
1.2k
2187F1
Al Fine (Maximizing Version)
binary search
data structures
divide and conquer
trees
+
3100
256
2171D
Rae Taylor and Trees (easy version)
binary search
data structures
dp
dsu
greedy
implementation
trees
+
1400
12.3k
2171F
Rae Taylor and Trees (hard version)
binary search
constructive algorithms
data structures
dp
dsu
greedy
implementation
trees
+
1600
7.6k
2164F2
Chain Prefix Rank (Hard Version)
binary search
combinatorics
data structures
dfs and similar
dp
graphs
math
trees
+
2900
648
2126G2
Big Wins! (hard version)
binary search
data structures
divide and conquer
dsu
trees
two pointers
+
2400
1.2k
2093G
Shorten the Array
binary search
bitmasks
data structures
dfs and similar
greedy
strings
trees
two pointers
+
1900
4k
2064D
Eating
binary search
bitmasks
brute force
data structures
dp
greedy
trees
two pointers
+
1900
6k
2042E
Vertex Pairs
binary search
brute force
data structures
dfs and similar
divide and conquer
greedy
implementation
trees
+
2900
535
2041I
Auto Complete
binary search
data structures
hashing
implementation
sortings
strings
trees
+
2300
688
2013F1
Game in Tree (Easy Version)
binary search
brute force
data structures
dp
games
greedy
implementation
trees
+
2700
679
2013F2
Game in Tree (Hard Version)
binary search
data structures
trees
+
3500
171
2002D2
DFS Checker (Hard Version)
binary search
data structures
dfs and similar
graphs
hashing
trees
+
2300
2.9k
1990E1
Catch the Mole(Easy Version)
binary search
data structures
dfs and similar
interactive
trees
+
2500
1.2k
1990E2
Catch the Mole(Hard Version)
binary search
data structures
dfs and similar
divide and conquer
interactive
trees
+
2600
1.2k
1975E
Chain Queries
binary search
data structures
dfs and similar
implementation
trees
+
2100
2.9k
1957F1
Frequency Mismatch (Easy Version)
binary search
data structures
divide and conquer
hashing
probabilities
trees
+
2600
706
1957F2
Frequency Mismatch (Hard Version)
binary search
data structures
dfs and similar
hashing
probabilities
trees
+
2700
659
1935F
Andrey's Tree
binary search
constructive algorithms
data structures
dfs and similar
dsu
greedy
implementation
trees
+
2800
634
1920F2
Smooth Sailing (Hard Version)
binary search
data structures
dsu
geometry
graphs
trees
+
3000
668
1903F
Babysitting
2-sat
binary search
data structures
graphs
trees
+
2500
976
1887D
Split
binary search
data structures
divide and conquer
dsu
math
trees
two pointers
+
2700
1.3k
1878G
wxhtzdy ORO Tree
binary search
bitmasks
brute force
data structures
dfs and similar
implementation
trees
+
2300
1.5k
1876G
Clubstep
binary search
brute force
data structures
greedy
trees
+
3500
295
1866K
Keen Tree Calculation
binary search
data structures
dp
geometry
graphs
implementation
trees
+
2500
585
1851G
Vlad and the Mountains
binary search
data structures
dsu
graphs
implementation
sortings
trees
two pointers
+
2000
4.2k
1849F
XOR Partition
binary search
bitmasks
data structures
divide and conquer
greedy
trees
+
2700
911
1771F
Hossam and Range Minimum Query
binary search
bitmasks
data structures
hashing
probabilities
strings
trees
+
2500
1.7k
1748E
Yet Another Array Counting Problem
binary search
data structures
divide and conquer
dp
flows
math
trees
+
2300
2.8k
1739D
Reset K Edges
binary search
data structures
dfs and similar
graphs
greedy
trees
+
1900
6.4k
1714G
Path Prefixes
binary search
data structures
dfs and similar
trees
+
1700
9.9k
1712F
Triameter
binary search
data structures
dfs and similar
trees
+
3200
508
1706E
Qpwoeirut and Vertices
binary search
data structures
dfs and similar
divide and conquer
dsu
greedy
trees
+
2300
4k
1633E
Spanning Tree Queries
binary search
data structures
dfs and similar
dsu
graphs
greedy
math
sortings
trees
+
2400
1.8k
1632E1
Distance Tree (easy version)
binary search
data structures
dfs and similar
graphs
shortest paths
trees
+
2400
1.4k
1628E
Groceries in Meteor Town
binary search
data structures
dsu
trees
+
3100
1.3k
1625E2
Cats on the Upgrade (hard version)
binary search
data structures
dfs and similar
graphs
trees
+
2800
705
1608G
Alphabetic Tree
binary search
data structures
dfs and similar
hashing
string suffix structures
strings
trees
+
3500
300
1535E
Gold Transfer
binary search
data structures
dp
greedy
interactive
trees
+
2200
3.1k
1479D
Odd Mineral Resource
binary search
bitmasks
brute force
data structures
probabilities
trees
+
2900
1.4k
1446C
Xor Tree
binary search
bitmasks
data structures
divide and conquer
dp
trees
+
2100
4.2k
1181D
Irrigation
binary search
data structures
implementation
sortings
trees
two pointers
+
2200
2.9k
1179C
Serge and Dining Room
binary search
data structures
graph matchings
greedy
implementation
math
trees
+
2200
2.5k
1099F
Cookies
binary search
data structures
dfs and similar
dp
games
trees
+
2400
1.1k
1062E
Company
binary search
data structures
dfs and similar
greedy
trees
+
2300
2.1k
1059E
Split the Tree
binary search
data structures
dp
greedy
trees
+
2400
1.7k
1004E
Sonya and Ice Cream
binary search
data structures
dp
greedy
shortest paths
trees
+
2400
1.3k
983E
NN country
binary search
data structures
trees
+
2800
1.2k
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
817F
MEX Queries
binary search
data structures
trees
+
2300
3.5k
739B
Alyona and a tree
binary search
data structures
dfs and similar
graphs
trees
+
1900
5.2k
722D
Generating Sets
binary search
data structures
dfs and similar
greedy
strings
trees
+
1900
3.4k
706D
Vasiliy's Multiset
binary search
bitmasks
data structures
trees
+
1800
13.1k
571D
Campus
binary search
data structures
dsu
trees
+
3100
1.2k
540E
Infinite Inversions
binary search
data structures
implementation
sortings
trees
+
2100
2.6k
533A
Berland Miners
binary search
data structures
dfs and similar
greedy
trees
+
3000
618
519E
A and B and Lecture Rooms
binary search
data structures
dfs and similar
dp
trees
+
2100
8.9k
474E
Pillars
binary search
data structures
dp
sortings
trees
+
2000
4.4k
414D
Mashmokh and Water Tanks
binary search
data structures
greedy
trees
two pointers
+
2300
777
374D
Inna and Sequence
binary search
data structures
dp
trees
+
2000
1k
372D
Choosing Subtree is Fun
binary search
data structures
dfs and similar
trees
two pointers
+
2600
1.2k
208E
Blood Cousins
binary search
data structures
dfs and similar
trees
+
2100
9.4k
191E
Thwarting Demonstrations
binary search
data structures
trees
+
2200
987
150E
Freezing with Style
binary search
data structures
divide and conquer
trees
+
3000
1.1k
6E
Exposition
binary search
data structures
dsu
trees
two pointers
+
1900
4k
showing 1–67 of 67