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Problemset
99 problems · filtered by 2 tags
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Name
✎
Rating
↕
Solved
↕
2236G
Criterion in Burlandia
binary search
bitmasks
brute force
data structures
dfs and similar
divide and conquer
implementation
trees
two pointers
+
2600
385
2230F
Game on Growing Tree
binary search
dfs and similar
divide and conquer
dp
games
implementation
trees
+
2700
510
2228F
Momoyo and the Network
binary search
dfs and similar
divide and conquer
dp
trees
+
2700
337
2223E
Zhily and Permutation
data structures
divide and conquer
trees
+
3500
56
2222G
Statistics on Tree
binary search
brute force
dfs and similar
divide and conquer
graphs
trees
+
3100
215
2207H1
Bowser's Castle (Easy Version)
binary search
constructive algorithms
divide and conquer
greedy
interactive
trees
+
unrated
60
2207H2
Bowser's Castle (Medium Version)
constructive algorithms
divide and conquer
interactive
trees
two pointers
+
unrated
51
2207H3
Bowser's Castle (Hard Version)
constructive algorithms
divide and conquer
interactive
trees
two pointers
+
unrated
69
2205D
Simons and Beating Peaks
data structures
divide and conquer
dp
greedy
implementation
trees
+
1700
5.6k
2200H
Six Seven
divide and conquer
math
number theory
strings
trees
+
2600
528
2187F1
Al Fine (Maximizing Version)
binary search
data structures
divide and conquer
trees
+
3100
256
2146D1
Max Sum OR (Easy Version)
bitmasks
constructive algorithms
divide and conquer
greedy
trees
+
1500
11.2k
2126G2
Big Wins! (hard version)
binary search
data structures
divide and conquer
dsu
trees
two pointers
+
2400
1.2k
2106G1
Baudelaire (easy version)
binary search
constructive algorithms
divide and conquer
greedy
interactive
trees
+
2200
1.7k
2106G2
Baudelaire (hard version)
binary search
dfs and similar
divide and conquer
implementation
interactive
trees
+
2500
647
2104G
Modulo 3
data structures
divide and conquer
dsu
graphs
trees
+
2700
553
2048F
Kevin and Math Class
brute force
data structures
divide and conquer
dp
implementation
math
trees
+
2500
1.3k
2042E
Vertex Pairs
binary search
brute force
data structures
dfs and similar
divide and conquer
greedy
implementation
trees
+
2900
535
2026F
Bermart Ice Cream
data structures
dfs and similar
divide and conquer
dp
implementation
trees
+
2700
413
2001C
Guess The Tree
binary search
brute force
dfs and similar
divide and conquer
dsu
greedy
interactive
trees
+
1500
13.1k
1990E2
Catch the Mole(Hard Version)
binary search
data structures
dfs and similar
divide and conquer
interactive
trees
+
2600
1.2k
1987G1
Spinning Round (Easy Version)
divide and conquer
dp
trees
+
2900
361
1987G2
Spinning Round (Hard Version)
divide and conquer
dp
trees
+
3500
255
1957F1
Frequency Mismatch (Easy Version)
binary search
data structures
divide and conquer
hashing
probabilities
trees
+
2600
706
1940C
Burenka and Pether
*special
data structures
dfs and similar
divide and conquer
dsu
graphs
sortings
trees
+
unrated
44
1919G
Tree LGM
constructive algorithms
divide and conquer
games
trees
+
3500
219
1916G
Optimizations From Chelsu
divide and conquer
dp
number theory
trees
+
3500
239
1913D
Array Collapse
data structures
divide and conquer
dp
trees
+
2100
4.3k
1902F
Trees and XOR Queries Again
data structures
dfs and similar
divide and conquer
graphs
implementation
math
trees
+
2400
1.5k
1887D
Split
binary search
data structures
divide and conquer
dsu
math
trees
two pointers
+
2700
1.3k
1859F
Teleportation in Byteland
data structures
dfs and similar
divide and conquer
graphs
shortest paths
trees
+
3200
582
1857G
Counting Graphs
combinatorics
divide and conquer
dsu
graphs
greedy
sortings
trees
+
2000
5.6k
1849F
XOR Partition
binary search
bitmasks
data structures
divide and conquer
greedy
trees
+
2700
911
1843F2
Omsk Metro (hard version)
data structures
dfs and similar
divide and conquer
dp
math
trees
+
2300
2.2k
1801E
Gasoline prices
data structures
divide and conquer
dsu
hashing
trees
+
3000
748
1797F
Li Hua and Path
data structures
dfs and similar
divide and conquer
dsu
trees
+
3000
666
1790F
Timofey and Black-White Tree
brute force
dfs and similar
divide and conquer
graphs
greedy
math
shortest paths
trees
+
2100
4.2k
1783G
Weighed Tree Radius
data structures
divide and conquer
implementation
trees
+
2800
625
1777F
Comfortably Numb
bitmasks
data structures
divide and conquer
strings
trees
+
2400
1.5k
1773B
BinCoin
binary search
divide and conquer
hashing
implementation
probabilities
trees
+
2200
982
1748E
Yet Another Array Counting Problem
binary search
data structures
divide and conquer
dp
flows
math
trees
+
2300
2.8k
1741D
Masha and a Beautiful Tree
dfs and similar
divide and conquer
graphs
sortings
trees
+
1300
18.7k
1706E
Qpwoeirut and Vertices
binary search
data structures
dfs and similar
divide and conquer
dsu
greedy
trees
+
2300
4k
1681F
Unique Occurrences
data structures
dfs and similar
divide and conquer
dp
dsu
trees
+
2300
2.4k
1680F
Lenient Vertex Cover
dfs and similar
divide and conquer
dsu
graphs
trees
+
2600
979
1671E
Preorder
combinatorics
divide and conquer
dp
dsu
hashing
sortings
trees
+
2100
3.3k
1648E
Air Reform
data structures
dfs and similar
divide and conquer
dsu
graphs
implementation
trees
+
3200
601
1633F
Perfect Matching
data structures
divide and conquer
interactive
trees
+
2800
652
1625E1
Cats on the Upgrade (easy version)
brute force
data structures
dfs and similar
divide and conquer
dp
graphs
trees
+
2500
1.2k
1583H
Omkar and Tours
data structures
divide and conquer
sortings
trees
+
3300
505
1580D
Subsequence
brute force
divide and conquer
dp
greedy
trees
+
2900
1.2k
1553H
XOR and Distance
bitmasks
divide and conquer
trees
+
2900
909
1528A
Parsa's Humongous Tree
dfs and similar
divide and conquer
dp
greedy
trees
+
1600
19.8k
1494D
Dogeforces
constructive algorithms
data structures
dfs and similar
divide and conquer
dsu
greedy
sortings
trees
+
2300
2.9k
1491E
Fib-tree
brute force
dfs and similar
divide and conquer
number theory
trees
+
2400
2.4k
1446C
Xor Tree
binary search
bitmasks
data structures
divide and conquer
dp
trees
+
2100
4.2k
1423C
Dušan's Railway
divide and conquer
graphs
trees
+
3500
222
1416C
XOR Inverse
bitmasks
data structures
divide and conquer
dp
greedy
math
sortings
strings
trees
+
2000
5.2k
1379E
Inverse Genealogy
constructive algorithms
divide and conquer
dp
math
trees
+
2800
538
1336F
Journey
data structures
divide and conquer
graphs
trees
+
3500
284
1303G
Sum of Prefix Sums
data structures
divide and conquer
geometry
trees
+
2700
1.1k
1285D
Dr. Evil Underscores
bitmasks
brute force
dfs and similar
divide and conquer
dp
greedy
strings
trees
+
1900
8.7k
1278E
Tests for problem D
constructive algorithms
dfs and similar
divide and conquer
trees
+
2200
2.1k
1217F
Forced Online Queries Problem
data structures
divide and conquer
dsu
graphs
trees
+
2600
744
1213G
Path Queries
divide and conquer
dsu
graphs
sortings
trees
+
1800
9.9k
1192B
Dynamic Diameter
*special
data structures
dfs and similar
divide and conquer
trees
+
unrated
1.6k
1175E
Minimal Segment Cover
data structures
dfs and similar
divide and conquer
dp
greedy
implementation
trees
+
2200
4.7k
1174F
Ehab and the Big Finale
constructive algorithms
divide and conquer
graphs
implementation
interactive
trees
+
2400
2.1k
1156D
0-1-Tree
dfs and similar
divide and conquer
dp
dsu
trees
+
2200
4.9k
1140G
Double Tree
data structures
divide and conquer
shortest paths
trees
+
2700
658
1019E
Raining season
data structures
divide and conquer
trees
+
3200
515
997D
Cycles in product
combinatorics
divide and conquer
trees
+
2900
855
990G
GCD Counting
divide and conquer
dp
dsu
number theory
trees
+
2400
2.4k
960E
Alternating Tree
combinatorics
dfs and similar
divide and conquer
dp
probabilities
trees
+
2300
2.4k
936E
Iqea
data structures
dfs and similar
divide and conquer
dsu
shortest paths
trees
+
3400
261
914E
Palindromes in a Tree
bitmasks
data structures
divide and conquer
trees
+
2400
2k
842E
Nikita and game
binary search
dfs and similar
divide and conquer
graphs
trees
+
2800
513
833D
Red-Black Cobweb
data structures
divide and conquer
implementation
trees
+
2800
524
809E
Surprise me!
divide and conquer
math
number theory
trees
+
3100
992
776F
Sherlock's bet to Moriarty
constructive algorithms
data structures
divide and conquer
geometry
graphs
implementation
trees
+
2800
543
772E
Verifying Kingdom
binary search
divide and conquer
interactive
trees
+
3200
224
757G
Can Bash Save the Day?
data structures
divide and conquer
graphs
trees
+
3400
660
715C
Digit Tree
dfs and similar
divide and conquer
dsu
trees
+
2700
2.7k
665E
Beautiful Subarrays
data structures
divide and conquer
strings
trees
+
2100
4.7k
632F
Magic Matrix
brute force
divide and conquer
graphs
matrices
trees
+
2400
1.3k
613D
Kingdom and its Cities
dfs and similar
divide and conquer
dp
graphs
sortings
trees
+
2800
4.3k
603E
Pastoral Oddities
data structures
divide and conquer
dsu
math
trees
+
3000
1.6k
566C
Logistical Questions
dfs and similar
divide and conquer
trees
+
3000
955
536E
Tavas on the Path
data structures
divide and conquer
trees
+
3100
554
434E
Furukawa Nagisa's Tree
binary search
divide and conquer
sortings
trees
+
3000
452
379F
New Year Tree
data structures
divide and conquer
trees
+
2400
2.8k
343E
Pumping Stations
brute force
dfs and similar
divide and conquer
flows
graphs
greedy
trees
+
2900
960
342E
Xenia and Tree
data structures
divide and conquer
trees
+
2400
11.3k
337D
Book of Evil
dfs and similar
divide and conquer
dp
trees
+
2000
7.1k
321C
Ciel the Commander
constructive algorithms
dfs and similar
divide and conquer
greedy
trees
+
2100
9.8k
293E
Close Vertices
data structures
divide and conquer
trees
+
2700
2.1k
196C
Paint Tree
constructive algorithms
divide and conquer
geometry
sortings
trees
+
2200
1.1k
150E
Freezing with Style
binary search
data structures
divide and conquer
trees
+
3000
1.1k
117E
Tree or not Tree
data structures
divide and conquer
graphs
implementation
trees
+
2900
451
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