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Before contest
Pinely Round 4 (Div. 1 + Div. 2)
08:00:20
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Difficulty:
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combine-tags-by-or
*combine tags by OR
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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Problems
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Status
Standings
Custom test
Problems
#
Name
575F
Bulbo
dp
,
greedy
2100
x992
575E
Spectator Riots
geometry
2800
x282
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x219
575B
Bribes
dfs and similar
,
graphs
,
trees
2200
x1052
575A
Fibonotci
data structures
,
math
,
matrices
2700
x774
573E
Bear and Bowling
data structures
,
greedy
3200
x1605
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x459
573C
Bear and Drawing
constructive algorithms
,
dfs and similar
,
trees
2300
x963
571E
Geometric Progressions
math
3200
x254
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x665
571C
CNF 2
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x613
571B
Minimization
dp
,
greedy
,
sortings
2000
x2589
571A
Lengthening Sticks
combinatorics
,
implementation
,
math
2100
x2215
570E
Pig and Palindromes
combinatorics
,
dp
2300
x1842
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x6900
568E
Longest Increasing Subsequence
data structures
,
dp
3000
x585
568D
Sign Posts
brute force
,
geometry
,
math
2800
x306
568C
New Language
2-sat
,
greedy
2600
x808
567F
Mausoleum
dp
2400
x574
567E
President and Roads
dfs and similar
,
graphs
,
hashing
,
shortest paths
2200
x1686
566G
Max and Min
geometry
2500
x334
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x606
566C
Logistical Questions
dfs and similar
,
divide and conquer
,
trees
3000
x712
566B
Replicating Processes
constructive algorithms
,
greedy
2600
x263
566A
Matching Names
dfs and similar
,
strings
,
trees
2300
x880
559E
Gerald and Path
dp
,
sortings
3000
x870
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x430
559C
Gerald and Giant Chess
combinatorics
,
dp
,
math
,
number theory
2200
x6327
558E
A Simple Task
data structures
,
sortings
,
strings
2300
x5826
558D
Guess Your Way Out! II
data structures
,
implementation
,
sortings
2300
x1119
557E
Ann and Half-Palindrome
data structures
,
dp
,
graphs
,
string suffix structures
,
strings
,
trees
2300
x1071
557D
Vitaly and Cycle
combinatorics
,
dfs and similar
,
graphs
,
math
2000
x2152
555E
Case of Computer Network
dfs and similar
,
graphs
,
trees
2800
x2313
555D
Case of a Top Secret
binary search
,
implementation
,
math
2500
x858
555C
Case of Chocolate
data structures
2200
x1951
555B
Case of Fugitive
data structures
,
greedy
,
sortings
2000
x3698
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x545
553D
Nudist Beach
binary search
,
graphs
,
greedy
2300
x991
553C
Love Triangles
dfs and similar
,
dsu
,
graphs
2200
x1761
552E
Vanya and Brackets
brute force
,
dp
,
expression parsing
,
greedy
,
implementation
,
strings
2100
x1607
551E
GukiZ and GukiZiana
binary search
,
data structures
,
implementation
2500
x1757
551D
GukiZ and Binary Operations
combinatorics
,
implementation
,
math
,
matrices
,
number theory
2100
x1949
551C
GukiZ hates Boxes
binary search
,
greedy
2200
x3508
550E
Brackets in Implications
constructive algorithms
,
greedy
,
implementation
,
math
2200
x1383
549H
Degenerate Matrix
binary search
,
math
2100
x1971
549G
Happy Line
constructive algorithms
,
greedy
,
sortings
2200
x2410
549F
Yura and Developers
data structures
,
divide and conquer
2800
x858
549E
Sasha Circle
geometry
,
math
2700
x147
549C
The Game Of Parity
games
2200
x1722
549B
Looksery Party
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2300
x1486
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x1995
547D
Mike and Fish
constructive algorithms
,
dfs and similar
,
graphs
2600
x2504
547C
Mike and Foam
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
2300
x2774
547A
Mike and Frog
brute force
,
greedy
,
implementation
,
math
2200
x2384
546E
Soldier and Traveling
flows
,
graphs
,
math
2100
x3515
545E
Paths and Trees
graphs
,
greedy
,
shortest paths
2000
x4539
543E
Listening to Music
constructive algorithms
,
data structures
3200
x286
543D
Road Improvement
dp
,
trees
2300
x2625
543C
Remembering Strings
bitmasks
,
dp
2500
x1371
543B
Destroying Roads
constructive algorithms
,
graphs
,
shortest paths
2100
x4054
542F
Quest
dp
,
greedy
2100
x919
542E
Playing on Graph
graphs
,
shortest paths
2600
x810
542D
Superhero's Job
dfs and similar
,
dp
,
hashing
,
math
,
number theory
2600
x502
542C
Idempotent functions
constructive algorithms
,
graphs
,
math
2000
x1109
542B
Duck Hunt
data structures
3100
x194
542A
Place Your Ad Here
data structures
,
sortings
2400
x545
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2059
540C
Ice Cave
dfs and similar
2000
x7149
538H
Summer Dichotomy
2-sat
,
data structures
,
dfs and similar
,
greedy
3200
x635
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x447
538F
A Heap of Heaps
brute force
,
data structures
,
math
,
sortings
2200
x1675
538E
Demiurges Play Again
dfs and similar
,
dp
,
math
,
trees
2200
x1520
536E
Tavas on the Path
data structures
,
divide and conquer
,
trees
3100
x380
536D
Tavas in Kansas
dp
,
games
2900
x715
535E
Tavas and Pashmaks
geometry
,
math
2600
x799
534F
Simplified Nonogram
bitmasks
,
dp
,
hashing
,
meet-in-the-middle
2400
x460
534E
Berland Local Positioning System
constructive algorithms
,
greedy
,
hashing
,
implementation
2400
x345
533F
Encoding
hashing
,
string suffix structures
,
strings
2400
x875
533D
Landmarks
data structures
,
dp
3000
x220
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2345
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x381
530I
Different variables
*special problem
2500
x46
530H
Points in triangle
*special problem
,
geometry
2100
x122
530G
Levenshtein distance
*special problem
2100
x152
530F
Jumping frogs
*special problem
2100
x100
528E
Triangles 3000
geometry
,
sortings
3100
x216
528D
Fuzzy Search
bitmasks
,
brute force
,
fft
2500
x2108
527E
Data Center Drama
dfs and similar
,
graphs
2600
x1922
526G
Spiders Evil Plan
greedy
,
trees
3300
x706
526F
Pudding Monsters
data structures
,
divide and conquer
3000
x2412
526E
Transmitting Levels
dp
,
implementation
2400
x1067
526D
Om Nom and Necklace
hashing
,
string suffix structures
,
strings
2200
x2126
526C
Om Nom and Candies
brute force
,
greedy
,
math
2000
x2466
525E
Anya and Cubes
binary search
,
bitmasks
,
brute force
,
dp
,
math
,
meet-in-the-middle
2100
x3074
525D
Arthur and Walls
constructive algorithms
,
data structures
,
graphs
,
greedy
,
shortest paths
2400
x1715
524F
And Yet Another Bracket Sequence
data structures
,
greedy
,
hashing
,
string suffix structures
,
strings
2700
x525
524E
Rooks and Rectangles
data structures
,
sortings
2400
x1179
524D
Social Network
greedy
,
two pointers
2100
x948
522D
Closest Equals
*special problem
,
data structures
2000
x3074
522C
Chicken or Fish?
greedy
2100
x714
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