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Codeforces Round 968 (Div. 2)
28:24:10
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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
1447A
Add Candies
constructive algorithms
,
math
800
x13770
1445B
Elimination
greedy
,
math
900
x15208
1445A
Array Rearrangment
greedy
,
sortings
800
x19073
1443A
Kids Seating
constructive algorithms
,
math
800
x16194
1440B
Sum of Medians
greedy
,
math
900
x18478
1440A
Buy the String
implementation
,
math
800
x19681
1438A
Specific Tastes of Andre
constructive algorithms
,
implementation
800
x19216
1437A
Marketing Scheme
brute force
,
constructive algorithms
,
greedy
,
math
800
x17990
1436B
Prime Square
constructive algorithms
,
math
900
x20481
1436A
Reorder
math
800
x22625
1433C
Dominant Piranha
constructive algorithms
,
greedy
900
x26839
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x28311
1433A
Boring Apartments
implementation
,
math
800
x51564
1431A
Selling Hamburgers
*special problem
800
x1835
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19331
1430A
Number of Apartments
brute force
,
constructive algorithms
,
math
900
x20815
1428A
Box is Pull
math
800
x16271
1427A
Avoiding Zero
math
,
sortings
900
x17171
1426B
Symmetric Matrix
implementation
900
x20580
1426A
Floor Number
implementation
,
math
800
x47306
1422A
Fence
geometry
,
math
800
x20831
1421A
XORwice
bitmasks
,
greedy
,
math
800
x28540
1420A
Cubes Sorting
math
,
sortings
900
x23242
1419A
Digit Game
games
,
greedy
,
implementation
900
x19506
1417A
Copy-paste
greedy
,
math
800
x18207
1415A
Prison Break
brute force
,
math
800
x15136
1413A
Finding Sasuke
constructive algorithms
,
math
800
x14738
1411A
In-game Chat
implementation
800
x20556
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x65225
1408A
Circle Coloring
constructive algorithms
800
x12480
1406A
Subset Mex
greedy
,
implementation
,
math
900
x21240
1405A
Permutation Forgery
constructive algorithms
800
x21408
1401A
Distance and Axis
constructive algorithms
,
math
900
x27335
1400A
String Similarity
constructive algorithms
,
strings
800
x26964
1399B
Gifts Fixing
greedy
800
x43258
1399A
Remove Smallest
greedy
,
sortings
800
x65539
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24480
1398A
Bad Triangle
geometry
,
math
800
x27437
1397A
Juggling Letters
greedy
,
strings
800
x28478
1393A
Rainbow Dash, Fluttershy and Chess Coloring
greedy
,
math
800
x20485
1392B
Omkar and Infinity Clock
implementation
,
math
800
x18461
1392A
Omkar and Password
greedy
,
math
800
x20548
1391B
Fix You
brute force
,
greedy
,
implementation
800
x27004
1391A
Suborrays
constructive algorithms
,
math
800
x24314
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x40572
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24861
1385B
Restore the Permutation by Merger
greedy
800
x36981
1385A
Three Pairwise Maximums
math
800
x38800
1382A
Common Subsequence
brute force
800
x26424
1380A
Three Indices
brute force
,
data structures
900
x25181
1374B
Multiply by 2, divide by 6
math
900
x49106
1374A
Required Remainder
math
800
x53003
1373B
01 Game
games
900
x34968
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x31834
1371A
Magical Sticks
math
800
x45565
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x51191
1369A
FashionabLee
geometry
,
math
800
x36321
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x38692
1367B
Even Array
greedy
,
math
800
x52607
1367A
Short Substrings
implementation
,
strings
800
x56768
1360B
Honest Coach
greedy
,
sortings
800
x47445
1360A
Minimal Square
greedy
,
math
800
x49965
1358A
Park Lighting
greedy
,
math
800
x39105
1354A
Alarm Clock
math
900
x23698
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x49017
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x40325
1352A
Sum of Round Numbers
implementation
,
math
800
x77303
1351B
Square?
brute force
,
implementation
,
math
900
x16885
1351A
A+B (Trial Problem)
implementation
800
x23530
1350A
Orac and Factors
math
900
x26004
1348A
Phoenix and Balance
greedy
,
math
800
x39264
1345A
Puzzle Pieces
math
800
x24127
1343B
Balanced Array
constructive algorithms
,
math
800
x55851
1343A
Candies
brute force
,
math
900
x47513
1341A
Nastya and Rice
math
900
x28879
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x31744
1337B
Kana and Dragon Quest game
greedy
,
implementation
,
math
900
x33948
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x37761
1335B
Construct the String
constructive algorithms
900
x38109
1335A
Candies and Two Sisters
math
800
x82641
1330A
Dreamoon and Ranking Collection
implementation
900
x18641
1328A
Divisibility Problem
math
800
x98920
1326B
Maximums
implementation
,
math
900
x23941
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x35764
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x39564
1324A
Yet Another Tetris Problem
implementation
,
number theory
900
x25841
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x19695
1321A
Contest for Robots
greedy
900
x14249
1316A
Grade Allocation
implementation
800
x18629
1315A
Dead Pixel
implementation
800
x12030
1313A
Fast Food Restaurant
brute force
,
greedy
,
implementation
900
x15450
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25839
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x41578
1307A
Cow and Haybales
greedy
,
implementation
800
x14927
1305A
Kuroni and the Gifts
brute force
,
constructive algorithms
,
greedy
,
sortings
800
x13997
1304A
Two Rabbits
math
800
x25324
1303A
Erasing Zeroes
implementation
,
strings
800
x31826
1301A
Three Strings
implementation
,
strings
800
x19322
1300A
Non-zero
implementation
,
math
800
x20953
1296B
Food Buying
math
900
x30018
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