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Pinely Round 4 (Div. 1 + Div. 2)
08:17:02
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Custom test
Problems
#
Name
625E
Frog Fights
data structures
,
greedy
2800
x326
625D
Finals in arithmetic
constructive algorithms
,
implementation
,
math
2400
x626
623E
Transforming Sequence
combinatorics
,
dp
,
fft
,
math
3300
x543
623D
Birthday
greedy
,
math
,
probabilities
2700
x471
623C
Electric Charges
binary search
,
dp
2900
x463
623B
Array GCD
dp
,
greedy
,
number theory
2300
x2122
622F
The Sum of the k-th Powers
math
2600
x3635
622E
Ants in Leaves
dfs and similar
,
greedy
,
sortings
,
trees
2200
x2025
621E
Wet Shark and Blocks
dp
,
matrices
2000
x2768
621D
Rat Kwesh and Cheese
brute force
,
constructive algorithms
,
math
2400
x968
620F
Xors on Segments
data structures
,
strings
,
trees
2800
x718
620E
New Year Tree
bitmasks
,
data structures
,
trees
2100
x5401
620D
Professor GukiZ and Two Arrays
binary search
,
two pointers
2200
x1671
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x232
618F
Double Knapsack
constructive algorithms
,
two pointers
3000
x1346
618E
Robot Arm
data structures
,
geometry
2500
x589
618D
Hamiltonian Spanning Tree
dfs and similar
,
dp
,
graph matchings
,
greedy
,
trees
2200
x1702
617E
XOR and Favorite Number
data structures
2200
x8123
616F
Expensive Strings
string suffix structures
,
strings
2700
x574
616E
Sum of Remainders
implementation
,
math
,
number theory
2200
x2806
615E
Hexagons
binary search
,
implementation
,
math
2100
x968
615D
Multipliers
math
,
number theory
2000
x3843
615C
Running Track
dp
,
greedy
,
strings
,
trees
2000
x2270
613E
Puzzle Lover
dp
,
hashing
,
strings
3200
x459
613D
Kingdom and its Cities
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
sortings
,
trees
2800
x2813
613C
Necklace
constructive algorithms
,
math
2500
x994
612F
Simba on the Circle
dp
2600
x377
612E
Square Root of Permutation
combinatorics
,
constructive algorithms
,
dfs and similar
,
graphs
,
math
2200
x1632
611H
New Year and Forgotten Tree
constructive algorithms
,
flows
,
graphs
3200
x581
611G
New Year and Cake
geometry
,
two pointers
2900
x431
611F
New Year and Cleaning
binary search
,
implementation
2500
x462
611E
New Year and Three Musketeers
data structures
,
greedy
,
sortings
2400
x862
611D
New Year and Ancient Prophecy
dp
,
hashing
,
strings
2000
x2568
610E
Alphabet Permutations
data structures
,
strings
2500
x860
610D
Vika and Segments
constructive algorithms
,
data structures
,
geometry
,
two pointers
2300
x1465
609F
Frogs and mosquitoes
data structures
,
greedy
2500
x1217
609E
Minimum spanning tree for each edge
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x7450
609D
Gadgets for dollars and pounds
binary search
,
greedy
,
two pointers
2000
x2652
607E
Cross Sum
binary search
,
geometry
3300
x250
607D
Power Tree
data structures
,
trees
2600
x563
607C
Marbles
hashing
,
strings
2500
x784
605E
Intergalaxy Trips
probabilities
,
shortest paths
2700
x1364
605D
Board Game
data structures
,
dfs and similar
2500
x796
605C
Freelancer's Dreams
geometry
2400
x1109
603E
Pastoral Oddities
data structures
,
divide and conquer
,
dsu
,
math
,
trees
3000
x1213
603D
Ruminations on Ruminants
geometry
,
math
2900
x340
603C
Lieges of Legendre
games
,
math
2200
x1824
601E
A Museum Robbery
data structures
,
dp
2800
x854
601D
Acyclic Organic Compounds
data structures
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2400
x1103
601C
Kleofáš and the n-thlon
dp
,
math
,
probabilities
2300
x1296
601B
Lipshitz Sequence
data structures
,
math
2100
x2272
600F
Edge coloring of bipartite graph
graphs
2800
x761
600E
Lomsat gelral
data structures
,
dfs and similar
,
dsu
,
trees
2300
x13244
600D
Area of Two Circles' Intersection
geometry
2000
x2204
599E
Sandy and Nuts
bitmasks
,
dp
,
trees
2600
x627
598F
Cut Length
geometry
2900
x362
598E
Chocolate Bar
brute force
,
dp
2000
x4764
598C
Nearest vectors
geometry
,
sortings
2300
x4274
596E
Wilbur and Strings
dfs and similar
,
dp
,
graphs
,
strings
2500
x390
596D
Wilbur and Trees
dp
,
math
,
probabilities
,
sortings
2300
x681
594E
Cutting the Line
string suffix structures
,
strings
3100
x158
594D
REQ
data structures
,
number theory
2500
x1572
594C
Edo and Magnets
brute force
,
greedy
,
implementation
,
two pointers
2300
x678
594B
Max and Bike
binary search
,
geometry
2500
x495
594A
Warrior and Archer
games
2300
x1709
593E
Strange Calculation and Cats
dp
,
matrices
2400
x586
593D
Happy Tree Party
data structures
,
dfs and similar
,
graphs
,
math
,
trees
2400
x1220
593C
Beautiful Function
constructive algorithms
,
math
2200
x279
592E
BCPC
binary search
,
geometry
,
two pointers
2700
x213
592D
Super M
dfs and similar
,
dp
,
graphs
,
trees
2200
x2558
590E
Birthday
graph matchings
,
strings
3200
x765
590D
Top Secret Task
dp
2300
x1175
590C
Three States
dfs and similar
,
graphs
,
shortest paths
2200
x2713
590B
Chip 'n Dale Rescue Rangers
binary search
,
geometry
,
math
2100
x1891
587F
Duff is Mad
data structures
,
strings
3000
x1014
587E
Duff as a Queen
data structures
2900
x695
587D
Duff in Mafia
2-sat
,
binary search
3100
x687
587C
Duff in the Army
data structures
,
trees
2200
x3758
587B
Duff in Beach
dp
2100
x1385
585F
Digits of Number Pi
dp
,
implementation
,
strings
3200
x643
585E
Present for Vitalik the Philatelist
combinatorics
,
math
,
number theory
2900
x1057
585D
Lizard Era: Beginning
meet-in-the-middle
2300
x1596
585C
Alice, Bob, Oranges and Apples
number theory
2400
x972
584E
Anton and Ira
constructive algorithms
,
greedy
,
math
2300
x1415
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x482
582D
Number of Binominal Coefficients
dp
,
math
,
number theory
3300
x614
582C
Superior Periodic Subarrays
number theory
2400
x736
581F
Zublicanes and Mumocrates
dp
,
trees
,
two pointers
2400
x862
581E
Kojiro and Furrari
dp
,
greedy
2800
x190
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x2003
578F
Mirror Box
matrices
,
trees
3200
x542
578E
Walking!
constructive algorithms
,
greedy
2700
x627
578D
LCS Again
dp
,
greedy
2700
x796
578C
Weakness and Poorness
ternary search
2000
x4377
576E
Painting Edges
binary search
,
data structures
3300
x1157
576D
Flights for Regular Customers
dp
,
matrices
2700
x1338
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x3292
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1790
575I
Robots protection
data structures
2800
x432
575G
Run for beer
dfs and similar
,
shortest paths
2200
x870
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