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Codeforces Round 950 (Div. 3)
46:15:11
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Difficulty:
—
two pointers
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
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3415
1265B
Beautiful Numbers
data structures
,
implementation
,
math
,
two pointers
1300
x12327
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7305
1257C
Dominated Subarray
greedy
,
implementation
,
sortings
,
strings
,
two pointers
1200
x15694
1254B2
Send Boxes to Alice (Hard Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
2100
x2967
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4458
1252E
Songwriter
greedy
,
two pointers
2200
x1214
1251C
Minimize The Integer
greedy
,
two pointers
1600
x11963
1251A
Broken Keyboard
brute force
,
strings
,
two pointers
1000
x19007
1250G
Discarding Game
dp
,
greedy
,
two pointers
2300
x710
1244E
Minimizing Difference
binary search
,
constructive algorithms
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x4861
1237B
Balanced Tunnel
data structures
,
sortings
,
two pointers
1300
x15009
1225B2
TV Subscriptions (Hard Version)
implementation
,
two pointers
1300
x10271
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3935
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x3019
1208B
Uniqueness
binary search
,
brute force
,
implementation
,
two pointers
1500
x10236
1203D2
Remove the Substring (hard version)
binary search
,
greedy
,
implementation
,
two pointers
1700
x7191
1200D
White Lines
brute force
,
data structures
,
dp
,
implementation
,
two pointers
1900
x4069
1198A
MP3
sortings
,
two pointers
1600
x8917
1196D2
RGB Substring (hard version)
data structures
,
dp
,
implementation
,
two pointers
1600
x9507
1195E
OpenStreetMap
data structures
,
two pointers
2100
x2940
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x974
1190D
Tokitsukaze and Strange Rectangle
data structures
,
divide and conquer
,
sortings
,
two pointers
2000
x2223
1190A
Tokitsukaze and Discard Items
implementation
,
two pointers
1400
x9265
1188B
Count Pairs
math
,
matrices
,
number theory
,
two pointers
2300
x4369
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2085
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x438
1168B
Good Triple
brute force
,
two pointers
1900
x3505
1167E
Range Deleting
binary search
,
combinatorics
,
data structures
,
two pointers
2100
x2551
1166C
A Tale of Two Lands
binary search
,
sortings
,
two pointers
1500
x9201
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x6890
1157F
Maximum Balanced Circle
constructive algorithms
,
dp
,
greedy
,
two pointers
2000
x2544
1156E
Special Segments of Permutation
data structures
,
divide and conquer
,
dsu
,
two pointers
2200
x2774
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x5919
1148E
Earth Wind and Fire
constructive algorithms
,
greedy
,
math
,
sortings
,
two pointers
2300
x1656
1148B
Born This Way
binary search
,
brute force
,
two pointers
1600
x7296
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5235
1133C
Balanced Team
sortings
,
two pointers
1200
x21465
1131G
Most Dangerous Shark
data structures
,
dp
,
two pointers
2700
x403
1120A
Diana and Liana
greedy
,
implementation
,
two pointers
1900
x1622
1107C
Brutality
greedy
,
sortings
,
two pointers
1300
x9666
1073C
Vasya and Robot
binary search
,
two pointers
1800
x4573
1066B
Heaters
greedy
,
two pointers
1500
x8114
1060C
Maximum Subrectangle
binary search
,
implementation
,
two pointers
1600
x4817
1044A
The Tower is Going Home
binary search
,
two pointers
1700
x2856
1043D
Mysterious Crime
brute force
,
combinatorics
,
math
,
meet-in-the-middle
,
two pointers
1700
x4378
1042D
Petya and Array
data structures
,
divide and conquer
,
two pointers
1800
x5758
1041D
Glider
binary search
,
data structures
,
two pointers
1700
x5844
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9303
1036D
Vasya and Arrays
greedy
,
two pointers
1600
x9001
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x435
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x12008
1006C
Three Parts of the Array
binary search
,
data structures
,
two pointers
1200
x20409
989D
A Shade of Moonlight
binary search
,
geometry
,
math
,
sortings
,
two pointers
2500
x508
985E
Pencils and Boxes
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2100
x3282
978C
Letters
binary search
,
implementation
,
two pointers
1000
x24559
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x3026
961B
Lecture Sleep
data structures
,
dp
,
implementation
,
two pointers
1200
x19417
958F2
Lightsabers (medium)
binary search
,
two pointers
1800
x1203
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x1958
939E
Maximize!
binary search
,
greedy
,
ternary search
,
two pointers
1800
x3017
939C
Convenient For Everybody
binary search
,
two pointers
1600
x4572
924B
Three-level Laser
binary search
,
greedy
,
two pointers
1600
x5091
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x9021
912E
Prime Gift
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
,
two pointers
2400
x1494
901C
Bipartite Segments
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2300
x1134
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x2749
895B
XK Segments
binary search
,
math
,
sortings
,
two pointers
1700
x3430
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8689
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8108
887D
Ratings and Reality Shows
data structures
,
two pointers
2400
x472
875B
Sorting the Coins
dsu
,
implementation
,
sortings
,
two pointers
1500
x5157
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3217
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2504
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1816
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2210
842A
Kirill And The Game
brute force
,
two pointers
1200
x10002
833B
The Bakery
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2200
x4585
830C
Bamboo Partition
brute force
,
data structures
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2300
x1188
818E
Card Game Again
binary search
,
data structures
,
number theory
,
two pointers
1900
x2008
814C
An impassioned circulation of affection
brute force
,
dp
,
strings
,
two pointers
1600
x6330
799E
Aquarium decoration
data structures
,
greedy
,
two pointers
2500
x918
788A
Functions again
dp
,
two pointers
1600
x8977
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x117
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6290
774B
Significant Cups
*special problem
,
binary search
,
data structures
,
two pointers
2100
x217
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x80
769B
News About Credit
*special problem
,
greedy
,
two pointers
1200
x3239
767D
Cartons of milk
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
2100
x2199
762C
Two strings
binary search
,
hashing
,
strings
,
two pointers
2100
x2380
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x7547
749C
Voting
greedy
,
implementation
,
two pointers
1500
x5917
748E
Santa Claus and Tangerines
binary search
,
data structures
,
greedy
,
two pointers
2100
x1443
746F
Music in Car
data structures
,
greedy
,
two pointers
2200
x724
744E
Hongcow Masters the Cyclic Shift
strings
,
two pointers
3200
x134
734C
Anton and Making Potions
binary search
,
dp
,
greedy
,
two pointers
1600
x5294
733E
Sleep in Class
constructive algorithms
,
data structures
,
math
,
two pointers
2400
x871
733C
Epidemic in Monstropolis
constructive algorithms
,
dp
,
greedy
,
two pointers
1800
x3302
722F
Cyclic Cipher
chinese remainder theorem
,
data structures
,
implementation
,
number theory
,
two pointers
2800
x473
716B
Complete the Word
greedy
,
two pointers
1300
x11848
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