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Codeforces Round 946 (Div. 3)
2 days
Register now »
→ Filter Problems
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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Custom test
Problems
#
Name
1254B2
Send Boxes to Alice (Hard Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
2100
x2938
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4420
1252E
Songwriter
greedy
,
two pointers
2200
x1213
1251C
Minimize The Integer
greedy
,
two pointers
1600
x11718
1251A
Broken Keyboard
brute force
,
strings
,
two pointers
1000
x18828
1250G
Discarding Game
dp
,
greedy
,
two pointers
2300
x710
1244E
Minimizing Difference
binary search
,
constructive algorithms
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x4836
1237B
Balanced Tunnel
data structures
,
sortings
,
two pointers
1300
x14762
1225B2
TV Subscriptions (Hard Version)
implementation
,
two pointers
1300
x10132
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3930
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x2873
1208B
Uniqueness
binary search
,
brute force
,
implementation
,
two pointers
1500
x10080
1203D2
Remove the Substring (hard version)
binary search
,
greedy
,
implementation
,
two pointers
1700
x7119
1200D
White Lines
brute force
,
data structures
,
dp
,
implementation
,
two pointers
1900
x4037
1198A
MP3
sortings
,
two pointers
1600
x8897
1196D2
RGB Substring (hard version)
data structures
,
dp
,
implementation
,
two pointers
1600
x9484
1195E
OpenStreetMap
data structures
,
two pointers
2100
x2926
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x971
1190D
Tokitsukaze and Strange Rectangle
data structures
,
divide and conquer
,
sortings
,
two pointers
2000
x2217
1190A
Tokitsukaze and Discard Items
implementation
,
two pointers
1400
x9231
1188B
Count Pairs
math
,
matrices
,
number theory
,
two pointers
2300
x4299
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2033
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x432
1168B
Good Triple
brute force
,
two pointers
1900
x3456
1167E
Range Deleting
binary search
,
combinatorics
,
data structures
,
two pointers
2100
x2535
1166C
A Tale of Two Lands
binary search
,
sortings
,
two pointers
1500
x9158
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x6871
1157F
Maximum Balanced Circle
constructive algorithms
,
dp
,
greedy
,
two pointers
2000
x2533
1156E
Special Segments of Permutation
data structures
,
divide and conquer
,
dsu
,
two pointers
2200
x2755
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x5903
1148E
Earth Wind and Fire
constructive algorithms
,
greedy
,
math
,
sortings
,
two pointers
2300
x1655
1148B
Born This Way
binary search
,
brute force
,
two pointers
1600
x7287
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5223
1133C
Balanced Team
sortings
,
two pointers
1200
x21387
1131G
Most Dangerous Shark
data structures
,
dp
,
two pointers
2700
x399
1120A
Diana and Liana
greedy
,
implementation
,
two pointers
1900
x1619
1107C
Brutality
greedy
,
sortings
,
two pointers
1300
x9658
1073C
Vasya and Robot
binary search
,
two pointers
1800
x4557
1066B
Heaters
greedy
,
two pointers
1500
x8089
1060C
Maximum Subrectangle
binary search
,
implementation
,
two pointers
1600
x4810
1044A
The Tower is Going Home
binary search
,
two pointers
1700
x2851
1043D
Mysterious Crime
brute force
,
combinatorics
,
math
,
meet-in-the-middle
,
two pointers
1700
x4376
1042D
Petya and Array
data structures
,
divide and conquer
,
two pointers
1800
x5732
1041D
Glider
binary search
,
data structures
,
two pointers
1700
x5833
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9284
1036D
Vasya and Arrays
greedy
,
two pointers
1600
x8985
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x432
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x11992
1006C
Three Parts of the Array
binary search
,
data structures
,
two pointers
1200
x20326
989D
A Shade of Moonlight
binary search
,
geometry
,
math
,
sortings
,
two pointers
2500
x505
985E
Pencils and Boxes
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2100
x3259
978C
Letters
binary search
,
implementation
,
two pointers
1000
x24455
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x3013
961B
Lecture Sleep
data structures
,
dp
,
implementation
,
two pointers
1200
x19298
958F2
Lightsabers (medium)
binary search
,
two pointers
1800
x1200
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x1903
939E
Maximize!
binary search
,
greedy
,
ternary search
,
two pointers
1800
x3014
939C
Convenient For Everybody
binary search
,
two pointers
1600
x4568
924B
Three-level Laser
binary search
,
greedy
,
two pointers
1600
x5072
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x9006
912E
Prime Gift
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
,
two pointers
2400
x1487
901C
Bipartite Segments
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2300
x1132
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x2741
895B
XK Segments
binary search
,
math
,
sortings
,
two pointers
1700
x3425
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8676
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8091
887D
Ratings and Reality Shows
data structures
,
two pointers
2400
x471
875B
Sorting the Coins
dsu
,
implementation
,
sortings
,
two pointers
1500
x5148
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3215
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2503
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1814
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2205
842A
Kirill And The Game
brute force
,
two pointers
1200
x9968
833B
The Bakery
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2200
x4511
830C
Bamboo Partition
brute force
,
data structures
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2300
x1185
818E
Card Game Again
binary search
,
data structures
,
number theory
,
two pointers
1900
x1879
814C
An impassioned circulation of affection
brute force
,
dp
,
strings
,
two pointers
1600
x6315
799E
Aquarium decoration
data structures
,
greedy
,
two pointers
2500
x914
788A
Functions again
dp
,
two pointers
1600
x8963
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x116
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6282
774B
Significant Cups
*special problem
,
binary search
,
data structures
,
two pointers
2100
x216
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x78
769B
News About Credit
*special problem
,
greedy
,
two pointers
1200
x3237
767D
Cartons of milk
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
2100
x2195
762C
Two strings
binary search
,
hashing
,
strings
,
two pointers
2100
x2366
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x7512
749C
Voting
greedy
,
implementation
,
two pointers
1500
x5913
748E
Santa Claus and Tangerines
binary search
,
data structures
,
greedy
,
two pointers
2100
x1442
746F
Music in Car
data structures
,
greedy
,
two pointers
2200
x723
744E
Hongcow Masters the Cyclic Shift
strings
,
two pointers
3200
x133
734C
Anton and Making Potions
binary search
,
dp
,
greedy
,
two pointers
1600
x5290
733E
Sleep in Class
constructive algorithms
,
data structures
,
math
,
two pointers
2400
x863
733C
Epidemic in Monstropolis
constructive algorithms
,
dp
,
greedy
,
two pointers
1800
x3298
722F
Cyclic Cipher
chinese remainder theorem
,
data structures
,
implementation
,
number theory
,
two pointers
2800
x470
716B
Complete the Word
greedy
,
two pointers
1300
x11822
702C
Cellular Network
binary search
,
implementation
,
two pointers
1500
x13216
701C
They Are Everywhere
binary search
,
strings
,
two pointers
1500
x13829
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x119
682E
Alyona and Triangles
geometry
,
two pointers
2600
x647
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