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Codeforces Round 946 (Div. 3)
24:27:33
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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
#
Name
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x84
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1534H
Lost Nodes
constructive algorithms
,
dp
,
graphs
,
interactive
,
sortings
,
trees
3500
x143
1515H
Phoenix and Bits
bitmasks
,
brute force
,
data structures
,
sortings
3500
x215
1637H
Minimize Inversions Number
data structures
,
greedy
,
math
,
sortings
3500
x300
833E
Caramel Clouds
data structures
,
dp
,
sortings
3400
x210
1515I
Phoenix and Diamonds
binary search
,
data structures
,
sortings
3400
x225
1381E
Origami
geometry
,
math
,
sortings
3300
x100
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x283
1396D
Rainbow Rectangles
data structures
,
sortings
,
two pointers
3300
x297
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x314
1558F
Strange Sort
data structures
,
sortings
3300
x352
1534G
A New Beginning
data structures
,
dp
,
geometry
,
sortings
3300
x526
1896G
Pepe Racing
constructive algorithms
,
implementation
,
interactive
,
sortings
3200
x309
1762G
Unequal Adjacent Elements
constructive algorithms
,
sortings
3100
x100
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x120
1740G
Dangerous Laser Power
constructive algorithms
,
dsu
,
sortings
3100
x179
528E
Triangles 3000
geometry
,
sortings
3100
x214
720D
Slalom
data structures
,
dp
,
sortings
3100
x224
1508E
Tree Calendar
brute force
,
constructive algorithms
,
data structures
,
dfs and similar
,
sortings
,
trees
3100
x327
1805F2
Survival of the Weakest (hard version)
greedy
,
math
,
sortings
,
two pointers
3100
x329
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x443
1476G
Minimum Difference
data structures
,
hashing
,
sortings
,
two pointers
3100
x530
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x252
1181E2
A Story of One Country (Hard)
brute force
,
greedy
,
sortings
3000
x264
1956F
Nene and the Passing Game
constructive algorithms
,
data structures
,
dsu
,
graphs
,
sortings
3000
x266
778E
Selling Numbers
dp
,
sortings
3000
x301
773E
Blog Post Rating
data structures
,
sortings
3000
x318
1552G
A Serious Referee
bitmasks
,
brute force
,
dfs and similar
,
sortings
3000
x454
798E
Mike and code of a permutation
constructive algorithms
,
data structures
,
graphs
,
sortings
3000
x458
1508D
Swap Pass
constructive algorithms
,
geometry
,
sortings
3000
x530
559E
Gerald and Path
dp
,
sortings
3000
x857
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2056
1402B
Roads
*special problem
,
geometry
,
sortings
2900
x104
1386B
Mixture
*special problem
,
data structures
,
geometry
,
math
,
sortings
2900
x118
478E
Wavy numbers
brute force
,
dfs and similar
,
meet-in-the-middle
,
sortings
2900
x206
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x265
1806F2
GCD Master (hard version)
greedy
,
math
,
sortings
2900
x268
1806F1
GCD Master (easy version)
greedy
,
math
,
number theory
,
sortings
2900
x329
1500D
Tiles for Bathroom
data structures
,
sortings
,
two pointers
2900
x414
48F
Snow sellers
greedy
,
sortings
2800
x134
887E
Little Brother
binary search
,
geometry
,
sortings
2800
x162
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x370
1608E
The Cells on the Paper
binary search
,
implementation
,
sortings
2800
x423
1810F
M-tree
data structures
,
math
,
sortings
,
trees
2800
x541
639E
Bear and Paradox
binary search
,
greedy
,
math
,
sortings
2800
x568
1383D
Rearrange
brute force
,
constructive algorithms
,
graphs
,
greedy
,
sortings
2800
x640
1394D
Boboniu and Jianghu
dp
,
greedy
,
sortings
,
trees
2800
x807
1654F
Minimal String Xoration
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
hashing
,
sortings
,
strings
2800
x1054
613D
Kingdom and its Cities
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
sortings
,
trees
2800
x2694
1682F
MCMF?
data structures
,
flows
,
graphs
,
greedy
,
sortings
,
two pointers
2700
x286
460E
Roland and Rose
brute force
,
geometry
,
math
,
sortings
2700
x335
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x393
1238G
Adilbek and the Watering System
data structures
,
greedy
,
sortings
2700
x398
1388E
Uncle Bogdan and Projections
data structures
,
geometry
,
sortings
2700
x399
1214F
Employment
greedy
,
sortings
2700
x423
1841F
Monocarp and a Strategic Game
geometry
,
sortings
,
two pointers
2700
x472
1682E
Unordered Swaps
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
math
,
sortings
,
trees
2700
x561
1514E
Baby Ehab's Hyper Apartment
binary search
,
graphs
,
interactive
,
sortings
,
two pointers
2700
x587
1019D
Large Triangle
binary search
,
geometry
,
sortings
2700
x626
1799F
Halve or Subtract
binary search
,
brute force
,
dp
,
greedy
,
sortings
2700
x768
1519E
Off by One
constructive algorithms
,
dfs and similar
,
geometry
,
graphs
,
sortings
,
trees
2700
x807
1601D
Difficult Mountain
data structures
,
dp
,
greedy
,
sortings
2700
x1382
140F
New Year Snowflake
geometry
,
sortings
2600
x360
286D
Tourists
data structures
,
sortings
2600
x371
269D
Maximum Waterfall
data structures
,
dp
,
graphs
,
sortings
2600
x419
685D
Kay and Eternity
brute force
,
implementation
,
sortings
2600
x477
173E
Camping Groups
data structures
,
sortings
2600
x535
1107F
Vasya and Endless Credits
dp
,
flows
,
graph matchings
,
graphs
,
sortings
2600
x725
1267I
Intriguing Selection
brute force
,
constructive algorithms
,
implementation
,
interactive
,
sortings
2600
x731
1805F1
Survival of the Weakest (easy version)
binary search
,
brute force
,
implementation
,
math
,
sortings
2600
x824
1539F
Strange Array
data structures
,
greedy
,
sortings
2600
x837
85E
Guard Towers
binary search
,
dsu
,
geometry
,
graphs
,
sortings
2600
x920
1566F
Points Movement
data structures
,
dp
,
greedy
,
implementation
,
sortings
2600
x928
1793E
Velepin and Marketing
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2600
x932
1389F
Bicolored Segments
data structures
,
dp
,
graph matchings
,
sortings
2600
x946
1503D
Flip the Cards
2-sat
,
constructive algorithms
,
data structures
,
greedy
,
sortings
,
two pointers
2600
x968
1656F
Parametric MST
binary search
,
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
2600
x988
797F
Mice and Holes
data structures
,
dp
,
greedy
,
sortings
2600
x1089
887F
Row of Models
greedy
,
sortings
2500
x161
379E
New Year Tree Decorations
geometry
,
schedules
,
sortings
2500
x337
166D
Shoe Store
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
2500
x346
1181E1
A Story of One Country (Easy)
brute force
,
divide and conquer
,
sortings
2500
x453
681E
Runaway to a Shadow
geometry
,
sortings
2500
x454
989D
A Shade of Moonlight
binary search
,
geometry
,
math
,
sortings
,
two pointers
2500
x505
912C
Perun, Ult!
brute force
,
greedy
,
sortings
2500
x509
314D
Sereja and Straight Lines
binary search
,
data structures
,
geometry
,
sortings
,
two pointers
2500
x515
383B
Volcanoes
binary search
,
implementation
,
sortings
,
two pointers
2500
x653
1195F
Geometers Anonymous Club
data structures
,
geometry
,
math
,
sortings
2500
x695
15D
Map
data structures
,
implementation
,
sortings
2500
x717
1776C
Library game
games
,
greedy
,
interactive
,
sortings
2500
x759
1891E
Brukhovich and Exams
brute force
,
greedy
,
implementation
,
math
,
sortings
2500
x775
1918F
Caterpillar on a Tree
dfs and similar
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
2500
x777
1612G
Max Sum Array
combinatorics
,
constructive algorithms
,
greedy
,
sortings
2500
x816
687D
Dividing Kingdom II
brute force
,
data structures
,
dsu
,
graphs
,
sortings
2500
x854
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x857
1374E2
Reading Books (hard version)
data structures
,
greedy
,
implementation
,
sortings
,
ternary search
,
two pointers
2500
x901
1764F
Doremy's Experimental Tree
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
sortings
,
trees
2500
x924
1354F
Summoning Minions
constructive algorithms
,
dp
,
flows
,
graph matchings
,
greedy
,
sortings
2500
x982
1658E
Gojou and Matrix Game
data structures
,
dp
,
games
,
hashing
,
implementation
,
math
,
number theory
,
sortings
2500
x1022
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