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Custom test
Problems
#
Name
734E
Anton and Tree
dfs and similar
,
dp
,
trees
2100
x3764
733F
Drivers Dissatisfaction
data structures
,
dsu
,
graphs
,
trees
2200
x1092
724G
Xor-matic Number of the Graph
bitmasks
,
graphs
,
math
,
number theory
,
trees
2600
x1003
724F
Uniformly Branched Trees
combinatorics
,
dp
,
trees
2700
x391
722D
Generating Sets
binary search
,
data structures
,
dfs and similar
,
greedy
,
strings
,
trees
1900
x3097
718D
Andrew and Chemistry
dp
,
hashing
,
trees
2900
x385
715C
Digit Tree
dfs and similar
,
divide and conquer
,
dsu
,
trees
2700
x1962
708C
Centroids
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2300
x3030
706D
Vasiliy's Multiset
binary search
,
bitmasks
,
data structures
,
trees
1800
x9381
704E
Iron Man
data structures
,
geometry
,
trees
3300
x272
700B
Connecting Universities
dfs and similar
,
dp
,
graphs
,
trees
1800
x3800
698B
Fix a Tree
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
1700
x5622
696E
...Wait for it...
data structures
,
dsu
,
trees
3000
x490
696B
Puzzles
dfs and similar
,
math
,
probabilities
,
trees
1700
x3394
696A
Lorenzo Von Matterhorn
brute force
,
data structures
,
implementation
,
trees
1500
x5992
690F3
Tree of Life (hard)
trees
3200
x45
690F2
Tree of Life (medium)
constructive algorithms
,
hashing
,
trees
2700
x78
690C3
Brain Network (hard)
trees
2200
x885
690C2
Brain Network (medium)
dfs and similar
,
graphs
,
trees
1500
x3591
685B
Kay and Snowflake
data structures
,
dfs and similar
,
dp
,
trees
1900
x3799
682C
Alyona and the Tree
dfs and similar
,
dp
,
graphs
,
trees
1600
x7017
681D
Gifts by the List
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2000
x1722
675D
Tree Construction
data structures
,
trees
1800
x3687
665E
Beautiful Subarrays
data structures
,
divide and conquer
,
strings
,
trees
2100
x2900
653E
Bear and Forgotten Tree 2
dfs and similar
,
dsu
,
graphs
,
trees
2400
x1382
652E
Pursuit For Artifacts
dfs and similar
,
dsu
,
graphs
,
trees
2300
x1977
650E
Clockwork Bomb
data structures
,
dfs and similar
,
dsu
,
greedy
,
trees
3200
x587
643E
Bear and Destroying Subtrees
dp
,
math
,
probabilities
,
trees
2700
x582
639F
Bear and Chemistry
data structures
,
dfs and similar
,
graphs
,
trees
3300
x395
639B
Bear and Forgotten Tree 3
constructive algorithms
,
graphs
,
trees
1600
x6403
638C
Road Improvement
*special problem
,
dfs and similar
,
graphs
,
greedy
,
trees
1800
x1501
633F
The Chocolate Spree
dfs and similar
,
dp
,
graphs
,
trees
2600
x905
632F
Magic Matrix
brute force
,
divide and conquer
,
graphs
,
matrices
,
trees
2400
x1030
629E
Famil Door and Roads
combinatorics
,
data structures
,
dfs and similar
,
dp
,
probabilities
,
trees
2300
x971
627F
Island Puzzle
dfs and similar
,
dsu
,
graphs
,
trees
3400
x233
627D
Preorder Test
binary search
,
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2600
x802
622E
Ants in Leaves
dfs and similar
,
greedy
,
sortings
,
trees
2200
x1992
620F
Xors on Segments
data structures
,
strings
,
trees
2800
x704
620E
New Year Tree
bitmasks
,
data structures
,
trees
2100
x5259
618D
Hamiltonian Spanning Tree
dfs and similar
,
dp
,
graph matchings
,
greedy
,
trees
2200
x1694
615C
Running Track
dp
,
greedy
,
strings
,
trees
2000
x2256
613D
Kingdom and its Cities
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
sortings
,
trees
2800
x2701
609E
Minimum spanning tree for each edge
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x7018
607D
Power Tree
data structures
,
trees
2600
x559
603E
Pastoral Oddities
data structures
,
divide and conquer
,
dsu
,
math
,
trees
3000
x1172
601D
Acyclic Organic Compounds
data structures
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2400
x1094
600E
Lomsat gelral
data structures
,
dfs and similar
,
dsu
,
trees
2300
x12771
599E
Sandy and Nuts
bitmasks
,
dp
,
trees
2600
x624
593D
Happy Tree Party
data structures
,
dfs and similar
,
graphs
,
math
,
trees
2400
x1180
592D
Super M
dfs and similar
,
dp
,
graphs
,
trees
2200
x2393
587C
Duff in the Army
data structures
,
trees
2200
x3696
581F
Zublicanes and Mumocrates
dp
,
trees
,
two pointers
2400
x852
580C
Kefa and Park
dfs and similar
,
graphs
,
trees
1500
x40100
578F
Mirror Box
matrices
,
trees
3200
x536
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1574
575B
Bribes
dfs and similar
,
graphs
,
trees
2200
x1040
573C
Bear and Drawing
constructive algorithms
,
dfs and similar
,
trees
2300
x957
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x651
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x6725
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x602
566C
Logistical Questions
dfs and similar
,
divide and conquer
,
trees
3000
x697
566A
Matching Names
dfs and similar
,
strings
,
trees
2300
x872
557E
Ann and Half-Palindrome
data structures
,
dp
,
graphs
,
string suffix structures
,
strings
,
trees
2300
x1061
555E
Case of Computer Network
dfs and similar
,
graphs
,
trees
2800
x2197
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x1949
543D
Road Improvement
dp
,
trees
2300
x2544
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2013
538E
Demiurges Play Again
dfs and similar
,
dp
,
math
,
trees
2200
x1501
536E
Tavas on the Path
data structures
,
divide and conquer
,
trees
3100
x373
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2306
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x375
526G
Spiders Evil Plan
greedy
,
trees
3300
x693
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x15764
519E
A and B and Lecture Rooms
binary search
,
data structures
,
dfs and similar
,
dp
,
trees
2100
x6253
516D
Drazil and Morning Exercise
dfs and similar
,
dp
,
dsu
,
trees
,
two pointers
2800
x1230
512D
Fox And Travelling
dp
,
trees
2900
x933
509F
Progress Monitoring
dp
,
trees
2300
x865
507C
Guess Your Way Out!
implementation
,
math
,
trees
1700
x4283
504E
Misha and LCP on Tree
binary search
,
dfs and similar
,
hashing
,
string suffix structures
,
trees
3000
x875
501C
Misha and Forest
constructive algorithms
,
data structures
,
greedy
,
sortings
,
trees
1500
x5515
500G
New Year Running
number theory
,
trees
3200
x156
500D
New Year Santa Network
combinatorics
,
dfs and similar
,
graphs
,
trees
1900
x3070
494D
Birthday
data structures
,
dfs and similar
,
dp
,
trees
2700
x515
490F
Treeland Tour
data structures
,
dfs and similar
,
dp
,
trees
2200
x1563
487E
Tourists
data structures
,
dfs and similar
,
graphs
,
trees
3200
x2152
486D
Valid Sets
dfs and similar
,
dp
,
math
,
trees
2100
x3859
482E
ELCA
data structures
,
trees
3200
x175
482D
Random Function and Tree
combinatorics
,
dp
,
trees
2700
x521
482B
Interesting Array
constructive algorithms
,
data structures
,
trees
1800
x6189
474E
Pillars
binary search
,
data structures
,
dp
,
sortings
,
trees
2000
x3150
472D
Design Tutorial: Inverse the Problem
dfs and similar
,
dsu
,
shortest paths
,
trees
1900
x5061
466E
Information Graph
dfs and similar
,
dsu
,
graphs
,
trees
2100
x2069
463E
Caisa and Tree
brute force
,
dfs and similar
,
math
,
number theory
,
trees
2100
x1394
461B
Appleman and Tree
dfs and similar
,
dp
,
trees
2000
x5350
457F
An easy problem about trees
dp
,
games
,
greedy
,
trees
3200
x103
455C
Civilization
dfs and similar
,
dp
,
dsu
,
ternary search
,
trees
2100
x5217
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x5701
452B
4-point polyline
brute force
,
constructive algorithms
,
geometry
,
trees
1800
x1981
444E
DZY Loves Planting
binary search
,
dsu
,
trees
2700
x746
442D
Adam and Tree
data structures
,
trees
2600
x957
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