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302 problems · filtered by 2 tags
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Name
✎
Rating
↕
Solved
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1242E
Planar Perimeter
constructive algorithms
graphs
+
3200
170
1228D
Complete Tripartite
brute force
constructive algorithms
graphs
hashing
implementation
+
1900
5.5k
1218G
Alpha planetary system
constructive algorithms
graphs
shortest paths
+
3000
262
1217D
Coloring Edges
constructive algorithms
dfs and similar
graphs
+
2100
6k
1214E
Petya and Construction Set
constructive algorithms
graphs
math
sortings
trees
+
2000
2.9k
1198C
Matching vs Independent Set
constructive algorithms
graphs
greedy
sortings
+
2000
4.1k
1174F
Ehab and the Big Finale
constructive algorithms
divide and conquer
graphs
implementation
interactive
trees
+
2400
2.1k
1163E
Magical Permutation
bitmasks
brute force
constructive algorithms
data structures
graphs
math
+
2400
1.1k
1158C
Permutation recovery
constructive algorithms
data structures
dfs and similar
graphs
greedy
math
sortings
+
2100
2.3k
1152E
Neko and Flashback
constructive algorithms
dfs and similar
graphs
+
2400
1.2k
1148G
Gold Experience
constructive algorithms
graphs
math
number theory
probabilities
+
3300
615
1141G
Privatization of Roads in Treeland
binary search
constructive algorithms
dfs and similar
graphs
greedy
trees
+
1900
2.6k
1133F2
Spanning Tree with One Fixed Degree
constructive algorithms
dfs and similar
dsu
graphs
greedy
+
1900
3.9k
1103C
Johnny Solving
constructive algorithms
dfs and similar
graphs
math
+
2700
1k
1098C
Construct a tree
binary search
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2400
1.2k
1089M
Minegraphed
constructive algorithms
graphs
+
2400
657
1082D
Maximum Diameter Graph
constructive algorithms
graphs
implementation
+
1800
4.2k
1068C
Colored Rooks
constructive algorithms
graphs
+
1700
3.4k
1065B
Vasya and Isolated Vertices
constructive algorithms
graphs
+
1300
11.7k
1056D
Decorate Apple Tree
constructive algorithms
dfs and similar
dp
graphs
greedy
sortings
trees
+
1600
6.8k
1041E
Tree Reconstruction
constructive algorithms
data structures
graphs
greedy
+
1900
3.9k
1033E
Hidden Bipartite Graph
binary search
constructive algorithms
dfs and similar
graphs
interactive
+
2800
823
1019C
Sergey's problem
constructive algorithms
graphs
+
3000
1.6k
1012B
Chemical table
constructive algorithms
dfs and similar
dsu
graphs
matrices
+
1900
4.4k
1009D
Relatively Prime Graph
brute force
constructive algorithms
graphs
greedy
math
+
1700
6.7k
1003E
Tree Constructing
constructive algorithms
graphs
+
2100
3.2k
990D
Graph And Its Complement
constructive algorithms
graphs
implementation
+
1700
4.1k
989C
A Mist of Florescence
constructive algorithms
graphs
+
1800
4.1k
976D
Degree Set
constructive algorithms
graphs
implementation
+
2500
787
923F
Public Service
constructive algorithms
graphs
trees
+
3200
143
916C
Jamie and Interesting Graph
constructive algorithms
graphs
shortest paths
+
1600
5.6k
911F
Tree Destruction
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2400
2.4k
901D
Weighting a Tree
constructive algorithms
dfs and similar
graphs
+
2700
673
899C
Dividing the numbers
constructive algorithms
graphs
math
+
1300
9.1k
886D
Restoration of string
constructive algorithms
graphs
implementation
+
2000
2k
883B
Berland Army
constructive algorithms
graphs
greedy
+
2600
479
858F
Wizard's Tour
constructive algorithms
dfs and similar
graphs
+
2300
2.2k
850D
Tournament Construction
constructive algorithms
dp
graphs
greedy
math
+
2800
498
847L
Berland SU Computer Network
constructive algorithms
dfs and similar
graphs
hashing
trees
+
2400
363
843C
Upgrading Tree
constructive algorithms
dfs and similar
graphs
math
trees
+
2600
416
840B
Leha and another game about graph
constructive algorithms
data structures
dfs and similar
dp
graphs
+
2100
2.9k
830E
Perpetual Motion Machine
constructive algorithms
dp
graphs
implementation
math
trees
+
3100
373
819E
Mister B and Flight to the Moon
constructive algorithms
graphs
+
2800
639
811D
Vladik and Favorite Game
constructive algorithms
dfs and similar
graphs
interactive
+
2100
1.9k
798E
Mike and code of a permutation
constructive algorithms
data structures
graphs
sortings
+
3000
558
796D
Police Stations
constructive algorithms
dfs and similar
dp
graphs
shortest paths
trees
+
2100
7.8k
788B
Weird journey
combinatorics
constructive algorithms
dfs and similar
dsu
graphs
+
2100
2.9k
780E
Underground Lab
constructive algorithms
dfs and similar
graphs
+
2100
3.1k
776F
Sherlock's bet to Moriarty
constructive algorithms
data structures
divide and conquer
geometry
graphs
implementation
trees
+
2800
543
772C
Vulnerable Kerbals
constructive algorithms
dp
graphs
math
number theory
+
2300
1.5k
761E
Dasha and Puzzle
constructive algorithms
dfs and similar
graphs
greedy
trees
+
2000
2.4k
755E
PolandBall and White-Red graph
constructive algorithms
graphs
shortest paths
+
2400
937
748F
Santa Clauses and a Soccer Championship
constructive algorithms
dfs and similar
graphs
trees
+
2300
744
746G
New Roads
constructive algorithms
graphs
trees
+
2100
1.7k
741C
Arpa’s overnight party and Mehrdad’s silent entering
constructive algorithms
dfs and similar
graphs
+
2600
3.2k
729E
Subordinates
constructive algorithms
data structures
graphs
greedy
sortings
+
1900
2.4k
723E
One-Way Reform
constructive algorithms
dfs and similar
flows
graphs
greedy
+
2200
2.3k
715B
Complete The Graph
binary search
constructive algorithms
graphs
shortest paths
+
2300
3.8k
698B
Fix a Tree
constructive algorithms
dfs and similar
dsu
graphs
trees
+
1700
6.2k
681D
Gifts by the List
constructive algorithms
dfs and similar
graphs
trees
+
2000
1.9k
648C
Путь Робота
constructive algorithms
dfs and similar
graphs
+
1100
1.4k
643B
Bear and Two Paths
constructive algorithms
graphs
+
1600
3.4k
639B
Bear and Forgotten Tree 3
constructive algorithms
graphs
trees
+
1600
7k
623A
Graph and String
constructive algorithms
graphs
+
1800
4.8k
612E
Square Root of Permutation
combinatorics
constructive algorithms
dfs and similar
graphs
math
+
2200
2.1k
611H
New Year and Forgotten Tree
constructive algorithms
flows
graphs
+
3200
787
605B
Lazy Student
constructive algorithms
data structures
graphs
+
1700
3.9k
571C
CNF 2
constructive algorithms
dfs and similar
graphs
greedy
+
2500
756
570D
Tree Requests
binary search
bitmasks
constructive algorithms
dfs and similar
graphs
trees
+
2200
9.3k
550D
Regular Bridge
constructive algorithms
graphs
implementation
+
1900
3.8k
549B
Looksery Party
constructive algorithms
dfs and similar
graphs
greedy
+
2300
1.6k
547D
Mike and Fish
constructive algorithms
dfs and similar
graphs
+
2600
3.2k
543B
Destroying Roads
constructive algorithms
graphs
shortest paths
+
2100
4.6k
542C
Idempotent functions
constructive algorithms
graphs
math
+
2000
1.3k
525D
Arthur and Walls
constructive algorithms
data structures
graphs
greedy
shortest paths
+
2400
2.3k
453C
Little Pony and Summer Sun Celebration
constructive algorithms
dfs and similar
graphs
+
2200
1.8k
441D
Valera and Swaps
constructive algorithms
dsu
graphs
implementation
math
string suffix structures
+
2100
1.3k
417C
Football
constructive algorithms
graphs
implementation
+
1400
5.1k
402C
Searching for Graph
brute force
constructive algorithms
graphs
+
1500
6.4k
388B
Fox and Minimal path
bitmasks
constructive algorithms
graphs
implementation
math
+
1900
2.6k
350E
Wrong Floyd
brute force
constructive algorithms
dfs and similar
graphs
+
2200
881
339C
Xenia and Weights
constructive algorithms
dfs and similar
dp
graphs
greedy
shortest paths
+
1700
8.8k
331E1
Deja Vu
constructive algorithms
graphs
implementation
+
2900
218
330B
Road Construction
constructive algorithms
graphs
+
1300
19.7k
327D
Block Tower
constructive algorithms
dfs and similar
graphs
+
1900
2.5k
323B
Tournament-graph
constructive algorithms
graphs
+
2200
486
317C
Balance
constructive algorithms
dfs and similar
graphs
trees
+
2500
584
272E
Dima and Horses
combinatorics
constructive algorithms
graphs
+
2200
1.3k
269C
Flawed Flow
constructive algorithms
flows
graphs
greedy
+
2100
1.9k
260D
Black and White Tree
constructive algorithms
dsu
graphs
greedy
trees
+
2100
1.7k
232A
Cycles
binary search
constructive algorithms
graphs
greedy
+
1600
2.9k
232C
Doe Graphs
constructive algorithms
divide and conquer
dp
graphs
shortest paths
+
2600
327
209C
Trails and Glades
constructive algorithms
dsu
graphs
greedy
+
2400
922
193A
Cutting Figure
constructive algorithms
graphs
trees
+
1700
4.7k
173D
Deputies
constructive algorithms
graphs
greedy
implementation
+
2500
314
141E
Clearing Up
constructive algorithms
dp
dsu
graphs
+
2300
1.4k
134C
Swaps
constructive algorithms
graphs
greedy
+
2200
607
91D
Grocer's Problem
constructive algorithms
graphs
greedy
+
2600
316
41E
3-cycles
constructive algorithms
graphs
greedy
+
1900
2.3k
36E
Two Paths
constructive algorithms
dsu
graphs
implementation
+
2600
637
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