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99 problems · filtered by 2 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
2230F
Game on Growing Tree
binary search
dfs and similar
divide and conquer
dp
games
implementation
trees
+
2700
510
2228C2
Cirno and Number (Hard Version)
binary search
dfs and similar
dp
greedy
implementation
+
1600
6.1k
2228F
Momoyo and the Network
binary search
dfs and similar
divide and conquer
dp
trees
+
2700
337
2222G
Statistics on Tree
binary search
brute force
dfs and similar
divide and conquer
graphs
trees
+
3100
215
2196C1
Interactive Graph (Simple Version)
binary search
combinatorics
dfs and similar
dp
graphs
interactive
+
1800
3.9k
2184C
Huge Pile
binary search
dfs and similar
dp
graphs
math
+
1100
23k
2174E2
Game of Scientists (Version 2)
binary search
chinese remainder theorem
dfs and similar
interactive
math
+
3200
104
2164F2
Chain Prefix Rank (Hard Version)
binary search
combinatorics
data structures
dfs and similar
dp
graphs
math
trees
+
2900
648
2135C
By the Assignment
binary search
bitmasks
combinatorics
dfs and similar
dsu
graphs
math
+
2000
5.4k
2118D2
Red Light, Green Light (Hard version)
binary search
brute force
data structures
dfs and similar
dp
graphs
implementation
math
number theory
+
2200
2.6k
2114F
Small Operations
binary search
brute force
dfs and similar
dp
math
number theory
sortings
+
2000
5.6k
2110D
Fewer Batteries
binary search
dfs and similar
dp
graphs
greedy
hashing
+
1700
8.8k
2109F
Penguin Steps
binary search
dfs and similar
flows
graphs
shortest paths
+
3000
284
2106G2
Baudelaire (hard version)
binary search
dfs and similar
divide and conquer
implementation
interactive
trees
+
2500
647
2104F
Numbers and Strings
binary search
brute force
dfs and similar
dp
implementation
math
+
2600
742
2093G
Shorten the Array
binary search
bitmasks
data structures
dfs and similar
greedy
strings
trees
two pointers
+
1900
4k
2057E2
Another Exercise on Graphs (hard version)
binary search
dfs and similar
dp
dsu
graphs
shortest paths
sortings
+
2500
2k
2042E
Vertex Pairs
binary search
brute force
data structures
dfs and similar
divide and conquer
greedy
implementation
trees
+
2900
535
2041K
Trophic Balance Species
binary search
brute force
dfs and similar
graphs
+
3100
122
2035F
Tree Operations
binary search
brute force
dfs and similar
dp
trees
+
2500
1.1k
2031D
Penchick and Desert Rabbit
binary search
data structures
dfs and similar
dp
dsu
greedy
implementation
two pointers
+
1700
10.1k
2022E1
Billetes MX (Easy Version)
2-sat
binary search
combinatorics
constructive algorithms
dfs and similar
dsu
graphs
+
2500
780
2002D2
DFS Checker (Hard Version)
binary search
data structures
dfs and similar
graphs
hashing
trees
+
2300
2.9k
2001C
Guess The Tree
binary search
brute force
dfs and similar
divide and conquer
dsu
greedy
interactive
trees
+
1500
13.1k
1997D
Maximize the Root
binary search
dfs and similar
dp
greedy
trees
+
1500
16.3k
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
1971F
Circle Perimeter
binary search
brute force
dfs and similar
geometry
implementation
math
+
1600
12.7k
1967D
Long Way to be Non-decreasing
binary search
dfs and similar
graphs
implementation
shortest paths
two pointers
+
2800
998
1957F2
Frequency Mismatch (Hard Version)
binary search
data structures
dfs and similar
hashing
probabilities
trees
+
2700
659
1952G
Mathematician Takeover
*special
binary search
dfs and similar
math
+
unrated
1.2k
1942D
Learning to Paint
binary search
data structures
dfs and similar
dp
greedy
implementation
sortings
+
2100
3.4k
1935F
Andrey's Tree
binary search
constructive algorithms
data structures
dfs and similar
dsu
greedy
implementation
trees
+
2800
634
1920F1
Smooth Sailing (Easy Version)
binary search
brute force
data structures
dfs and similar
dsu
graphs
shortest paths
+
2500
1.3k
1895E
Infinite Card Game
binary search
brute force
data structures
dfs and similar
dp
dsu
games
graphs
greedy
sortings
two pointers
+
2300
1.9k
1878G
wxhtzdy ORO Tree
binary search
bitmasks
brute force
data structures
dfs and similar
implementation
trees
+
2300
1.5k
1847F
The Boss's Identity
binary search
bitmasks
data structures
dfs and similar
greedy
math
sortings
+
2500
1.1k
1827E
Bus Routes
binary search
constructive algorithms
dfs and similar
greedy
trees
+
3400
1k
1795F
Blocking Chips
binary search
constructive algorithms
dfs and similar
greedy
trees
+
2400
1.4k
1777E
Edge Reverse
binary search
dfs and similar
graphs
trees
+
2200
2.4k
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
1679D
Toss a Coin to Your Graph...
binary search
dfs and similar
dp
graphs
+
1900
6k
1651D
Nearest Excluded Points
binary search
data structures
dfs and similar
graphs
shortest paths
+
1900
6.7k
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
1632E2
Distance Tree (hard version)
binary search
dfs and similar
shortest paths
trees
+
2700
1.3k
1625E2
Cats on the Upgrade (hard version)
binary search
data structures
dfs and similar
graphs
trees
+
2800
705
1619G
Unusual Minesweeper
binary search
dfs and similar
dsu
greedy
sortings
+
2000
2.8k
1608G
Alphabetic Tree
binary search
data structures
dfs and similar
hashing
string suffix structures
strings
trees
+
3500
300
1601F
Two Sorts
binary search
dfs and similar
math
meet-in-the-middle
+
3400
309
1592D
Hemose in ICPC ?
binary search
dfs and similar
implementation
interactive
math
number theory
trees
+
2300
2.7k
1574D
The Strongest Build
binary search
brute force
data structures
dfs and similar
graphs
greedy
hashing
implementation
+
2000
4.9k
1560F1
Nearest Beautiful Number (easy version)
binary search
bitmasks
brute force
constructive algorithms
dfs and similar
greedy
+
1900
6.8k
1558E
Down Below
binary search
dfs and similar
graphs
greedy
meet-in-the-middle
shortest paths
+
3000
726
1453E
Dog Snacks
binary search
dfs and similar
dp
greedy
trees
+
2300
2.3k
1442E
Black, White and Grey Tree
binary search
constructive algorithms
dfs and similar
dp
greedy
trees
+
3000
805
1436D
Bandit in a City
binary search
dfs and similar
graphs
greedy
trees
+
1900
6.6k
1419F
Rain of Fire
binary search
data structures
dfs and similar
dsu
graphs
implementation
+
2800
632
1399E2
Weights Division (hard version)
binary search
dfs and similar
greedy
sortings
trees
two pointers
+
2200
2.6k
1387A
Graph
*special
binary search
dfs and similar
dp
math
ternary search
+
2100
974
1379C
Choosing flowers
binary search
brute force
data structures
dfs and similar
dp
greedy
sortings
two pointers
+
2000
6.2k
1370F1
The Hidden Pair (Easy Version)
binary search
dfs and similar
graphs
interactive
shortest paths
trees
+
2400
1.8k
1370F2
The Hidden Pair (Hard Version)
binary search
dfs and similar
graphs
interactive
shortest paths
trees
+
2700
1.7k
1361C
Johnny and Megan's Necklace
binary search
bitmasks
constructive algorithms
dfs and similar
dsu
graphs
+
2500
2.1k
1324C
Frog Jumps
binary search
data structures
dfs and similar
greedy
implementation
+
1100
30.8k
1307D
Cow and Fields
binary search
data structures
dfs and similar
graphs
greedy
shortest paths
sortings
+
1900
7.4k
1153D
Serval and Rooted Tree
binary search
dfs and similar
dp
greedy
trees
+
1900
5.6k
1141G
Privatization of Roads in Treeland
binary search
constructive algorithms
dfs and similar
graphs
greedy
trees
+
1900
2.6k
1100E
Andrew and Taxi
binary search
dfs and similar
graphs
+
2200
2.7k
1099F
Cookies
binary search
data structures
dfs and similar
dp
games
trees
+
2400
1.1k
1098C
Construct a tree
binary search
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2400
1.2k
1062E
Company
binary search
data structures
dfs and similar
greedy
trees
+
2300
2.1k
1033E
Hidden Bipartite Graph
binary search
constructive algorithms
dfs and similar
graphs
interactive
+
2800
823
1027F
Session in BSU
binary search
dfs and similar
dsu
graph matchings
graphs
+
2400
2k
932B
Recursive Queries
binary search
data structures
dfs and similar
+
1300
9.4k
912E
Prime Gift
binary search
dfs and similar
math
meet-in-the-middle
number theory
two pointers
+
2400
2.1k
901C
Bipartite Segments
binary search
data structures
dfs and similar
dsu
graphs
two pointers
+
2300
1.3k
896A
Nephren gives a riddle
binary search
dfs and similar
+
1700
3.9k
842E
Nikita and game
binary search
dfs and similar
divide and conquer
graphs
trees
+
2800
513
804D
Expected diameter of a tree
binary search
brute force
dfs and similar
dp
sortings
trees
+
2500
1.6k
739B
Alyona and a tree
binary search
data structures
dfs and similar
graphs
trees
+
1900
5.2k
730C
Bulmart
binary search
dfs and similar
+
2100
1.4k
722D
Generating Sets
binary search
data structures
dfs and similar
greedy
strings
trees
+
1900
3.4k
627D
Preorder Test
binary search
dfs and similar
dp
graphs
greedy
trees
+
2600
1k
570D
Tree Requests
binary search
bitmasks
constructive algorithms
dfs and similar
graphs
trees
+
2200
9.3k
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
504E
Misha and LCP on Tree
binary search
dfs and similar
hashing
string suffix structures
trees
+
3000
1.1k
372D
Choosing Subtree is Fun
binary search
data structures
dfs and similar
trees
two pointers
+
2600
1.2k
366D
Dima and Trap Graph
binary search
data structures
dfs and similar
dsu
shortest paths
two pointers
+
2000
1.8k
314B
Sereja and Periods
binary search
dfs and similar
strings
+
2000
1.6k
246E
Blood Cousins Return
binary search
data structures
dfs and similar
dp
sortings
+
2400
4.8k
208E
Blood Cousins
binary search
data structures
dfs and similar
trees
+
2100
9.4k
85C
Petya and Tree
binary search
dfs and similar
probabilities
sortings
trees
+
2200
642
showing 1–99 of 99