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Codeforces Round 986 (Div. 2)
08:23:51
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combine-tags-by-or
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2-sat
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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
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probabilities
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Problems
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Name
1225E
Rock Is Push
binary search
,
dp
2200
x1897
1223G
Wooden Raft
binary search
,
math
,
number theory
3200
x250
1223C
Save the Nature
binary search
,
greedy
1600
x8368
1221F
Choose a Square
binary search
,
data structures
,
sortings
2400
x1061
1221C
Perfect Team
binary search
,
math
1200
x21271
1220F
Gardener Alex
binary search
,
data structures
2700
x718
1217C
The Number Of Good Substrings
binary search
,
bitmasks
,
brute force
1700
x7475
1217A
Creating a Character
binary search
,
math
1300
x15048
1216E2
Numerical Sequence (hard version)
binary search
,
math
2200
x1484
1216E1
Numerical Sequence (easy version)
binary search
,
brute force
,
math
1900
x3458
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x45
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x194
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x230
1208D
Restore Permutation
binary search
,
data structures
,
greedy
,
implementation
1900
x4937
1208B
Uniqueness
binary search
,
brute force
,
implementation
,
two pointers
1500
x10586
1203D2
Remove the Substring (hard version)
binary search
,
greedy
,
implementation
,
two pointers
1700
x7452
1202F
You Are Given Some Letters...
binary search
,
implementation
,
math
2700
x413
1201D
Treasure Hunting
binary search
,
dp
,
greedy
,
implementation
2100
x2370
1201C
Maximum Median
binary search
,
greedy
,
math
,
sortings
1400
x24077
1198B
Welfare State
binary search
,
brute force
,
data structures
,
sortings
1600
x9494
1197E
Culture Code
binary search
,
combinatorics
,
data structures
,
dp
,
shortest paths
,
sortings
2300
x1689
1195B
Sport Mafia
binary search
,
brute force
,
math
1000
x19933
1190E
Tokitsukaze and Explosion
binary search
,
greedy
3100
x227
1187B
Letters Shop
binary search
,
implementation
,
strings
1300
x12297
1184B1
The Doctor Meets Vader (Easy)
binary search
,
sortings
1400
x5410
1183C
Computer Game
binary search
,
math
1400
x14051
1182F
Maximum Sine
binary search
,
data structures
,
number theory
2700
x344
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2408
1179C
Serge and Dining Room
binary search
,
data structures
,
graph matchings
,
greedy
,
implementation
,
math
,
trees
2200
x2079
1178H
Stock Exchange
binary search
,
flows
,
graphs
3500
x232
1177B
Digits Sequence (Hard Edition)
binary search
,
divide and conquer
,
implementation
1800
x2590
1175C
Electrification
binary search
,
brute force
,
greedy
1600
x6834
1170F
Wheels
*special problem
,
binary search
,
greedy
x122
1170E
Sliding Doors
*special problem
,
binary search
x261
1168A
Increasing by Modulo
binary search
,
greedy
1700
x6877
1167E
Range Deleting
binary search
,
combinatorics
,
data structures
,
two pointers
2100
x2693
1166D
Cute Sequences
binary search
,
brute force
,
greedy
,
math
2200
x2174
1166C
A Tale of Two Lands
binary search
,
sortings
,
two pointers
1500
x9647
1165F2
Microtransactions (hard version)
binary search
,
greedy
,
implementation
2000
x2199
1165F1
Microtransactions (easy version)
binary search
,
greedy
2000
x1916
1158E
Strange device
binary search
,
interactive
,
math
,
trees
3400
x152
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x7203
1157E
Minimum Array
binary search
,
data structures
,
greedy
1700
x8430
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x6127
1153E
Serval and Snake
binary search
,
brute force
,
interactive
2200
x1500
1153D
Serval and Rooted Tree
binary search
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x5008
1148B
Born This Way
binary search
,
brute force
,
two pointers
1600
x7512
1141G
Privatization of Roads in Treeland
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x2294
1138A
Sushi for Two
binary search
,
greedy
,
implementation
900
x18518
1136E
Nastya Hasn't Written a Legend
binary search
,
data structures
2200
x1085
1132D
Stressful Training
binary search
,
greedy
2300
x1935
1131C
Birthday
binary search
,
greedy
,
sortings
1200
x14879
1129E
Legendary Tree
binary search
,
interactive
,
trees
3100
x439
1129C
Morse Code
binary search
,
data structures
,
dp
,
hashing
,
sortings
,
string suffix structures
,
strings
2400
x927
1119D
Frets On Fire
binary search
,
sortings
1800
x4853
1119B
Alyona and a Narrow Fridge
binary search
,
flows
,
greedy
,
sortings
1300
x11185
1118D2
Coffee and Coursework (Hard Version)
binary search
,
greedy
1700
x6333
1117C
Magic Ship
binary search
1900
x7146
1114E
Arithmetic Progression
binary search
,
interactive
,
number theory
,
probabilities
2200
x2877
1111C
Creative Snap
binary search
,
brute force
,
divide and conquer
,
math
1700
x6286
1109C
Sasha and a Patient Friend
binary search
,
data structures
,
implementation
2800
x256
1108F
MST Unification
binary search
,
dsu
,
graphs
,
greedy
2100
x2960
1107G
Vasya and Maximum Profit
binary search
,
constructive algorithms
,
data structures
,
dp
,
dsu
2400
x1069
1103B
Game with modulo
binary search
,
constructive algorithms
,
interactive
2000
x3296
1102F
Elongated Matrix
binary search
,
bitmasks
,
brute force
,
dp
,
graphs
2000
x2022
1101F
Trucks and Cities
binary search
,
dp
2400
x1358
1100E
Andrew and Taxi
binary search
,
dfs and similar
,
graphs
2200
x2383
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x10119
1099F
Cookies
binary search
,
data structures
,
dfs and similar
,
dp
,
games
,
trees
2400
x959
1099B
Squares and Segments
binary search
,
constructive algorithms
,
math
1100
x11167
1098E
Fedya the Potter
binary search
,
implementation
,
math
,
number theory
3400
x224
1098C
Construct a tree
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
trees
2400
x1088
1091E
New Year and the Acquaintance Estimation
binary search
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
sortings
2400
x1012
1082E
Increasing Frequency
binary search
,
dp
,
greedy
2000
x4623
1081E
Missing Numbers
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1900
x2600
1077D
Cutting Out
binary search
,
sortings
1600
x8970
1076C
Meme Problem
binary search
,
math
1300
x12496
1073D
Berland Fair
binary search
,
brute force
,
data structures
,
greedy
1700
x6432
1073C
Vasya and Robot
binary search
,
two pointers
1800
x4804
1071E
Rain Protection
binary search
,
geometry
3500
x146
1070E
Getting Deals Done
binary search
,
data structures
2100
x1388
1066D
Boxes Packing
binary search
,
implementation
1800
x5504
1063C
Dwarves, Hats and Extrasensory Abilities
binary search
,
constructive algorithms
,
geometry
,
interactive
1900
x3064
1062E
Company
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
2300
x1799
1060C
Maximum Subrectangle
binary search
,
implementation
,
two pointers
1600
x4905
1059E
Split the Tree
binary search
,
data structures
,
dp
,
greedy
,
trees
2400
x1438
1059D
Nature Reserve
binary search
,
geometry
,
ternary search
2200
x2777
1056F
Write The Contest
binary search
,
dp
,
math
2500
x663
1055E
Segments on the Line
binary search
,
dp
2500
x734
1051E
Vasya and Big Integers
binary search
,
data structures
,
dp
,
hashing
,
strings
2600
x969
1044A
The Tower is Going Home
binary search
,
two pointers
1700
x2910
1042A
Benches
binary search
,
implementation
1100
x12961
1041D
Glider
binary search
,
data structures
,
two pointers
1700
x6002
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9520
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2373
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x454
1033E
Hidden Bipartite Graph
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2800
x652
1029F
Multicolored Markers
binary search
,
brute force
,
math
,
number theory
2000
x2581
1027F
Session in BSU
binary search
,
dfs and similar
,
dsu
,
graph matchings
,
graphs
2400
x1558
1019D
Large Triangle
binary search
,
geometry
,
sortings
2700
x639
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