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Codeforces Round 972 (Div. 2)
42:13:33
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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
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Problems
#
Name
1452C
Two Brackets
greedy
800
x19446
1452A
Robot Program
math
800
x22059
1451A
Subtract or Divide
greedy
,
math
800
x24165
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x17963
1447A
Add Candies
constructive algorithms
,
math
800
x13775
1445A
Array Rearrangment
greedy
,
sortings
800
x19086
1443A
Kids Seating
constructive algorithms
,
math
800
x16206
1440A
Buy the String
implementation
,
math
800
x19701
1438A
Specific Tastes of Andre
constructive algorithms
,
implementation
800
x19232
1437A
Marketing Scheme
brute force
,
constructive algorithms
,
greedy
,
math
800
x17996
1436A
Reorder
math
800
x22643
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x28356
1433A
Boring Apartments
implementation
,
math
800
x51948
1431A
Selling Hamburgers
*special problem
800
x1858
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19345
1428A
Box is Pull
math
800
x16283
1426A
Floor Number
implementation
,
math
800
x47627
1422A
Fence
geometry
,
math
800
x20850
1421A
XORwice
bitmasks
,
greedy
,
math
800
x28730
1417A
Copy-paste
greedy
,
math
800
x18218
1415A
Prison Break
brute force
,
math
800
x15145
1413A
Finding Sasuke
constructive algorithms
,
math
800
x14746
1411A
In-game Chat
implementation
800
x20570
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x65794
1408A
Circle Coloring
constructive algorithms
800
x12485
1405A
Permutation Forgery
constructive algorithms
800
x21425
1400A
String Similarity
constructive algorithms
,
strings
800
x26979
1399B
Gifts Fixing
greedy
800
x43367
1399A
Remove Smallest
greedy
,
sortings
800
x65957
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24516
1398A
Bad Triangle
geometry
,
math
800
x27475
1397A
Juggling Letters
greedy
,
strings
800
x28519
1393A
Rainbow Dash, Fluttershy and Chess Coloring
greedy
,
math
800
x20492
1392B
Omkar and Infinity Clock
implementation
,
math
800
x18467
1392A
Omkar and Password
greedy
,
math
800
x20566
1391B
Fix You
brute force
,
greedy
,
implementation
800
x27137
1391A
Suborrays
constructive algorithms
,
math
800
x24340
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x40897
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24884
1385B
Restore the Permutation by Merger
greedy
800
x37050
1385A
Three Pairwise Maximums
math
800
x38962
1382A
Common Subsequence
brute force
800
x26468
1374A
Required Remainder
math
800
x53372
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x31874
1371A
Magical Sticks
math
800
x45818
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x51579
1369A
FashionabLee
geometry
,
math
800
x36415
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x38957
1367B
Even Array
greedy
,
math
800
x53148
1367A
Short Substrings
implementation
,
strings
800
x57067
1360B
Honest Coach
greedy
,
sortings
800
x47667
1360A
Minimal Square
greedy
,
math
800
x50272
1358A
Park Lighting
greedy
,
math
800
x39262
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x49301
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x40493
1352A
Sum of Round Numbers
implementation
,
math
800
x78447
1351A
A+B (Trial Problem)
implementation
800
x23670
1348A
Phoenix and Balance
greedy
,
math
800
x39355
1345A
Puzzle Pieces
math
800
x24143
1343B
Balanced Array
constructive algorithms
,
math
800
x56165
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x38037
1335A
Candies and Two Sisters
math
800
x83488
1328A
Divisibility Problem
math
800
x100067
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x35890
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x39763
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x19731
1316A
Grade Allocation
implementation
800
x18643
1315A
Dead Pixel
implementation
800
x12039
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25869
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x41739
1307A
Cow and Haybales
greedy
,
implementation
800
x14941
1305A
Kuroni and the Gifts
brute force
,
constructive algorithms
,
greedy
,
sortings
800
x14019
1304A
Two Rabbits
math
800
x25371
1303A
Erasing Zeroes
implementation
,
strings
800
x32023
1301A
Three Strings
implementation
,
strings
800
x19344
1300A
Non-zero
implementation
,
math
800
x20965
1296A
Array with Odd Sum
math
800
x41462
1294A
Collecting Coins
math
800
x46522
1287A
Angry Students
greedy
,
implementation
800
x20553
1285A
Mezo Playing Zoma
math
800
x28018
1284A
New Year and Naming
implementation
,
strings
800
x17986
1283A
Minutes Before the New Year
math
800
x49337
1281A
Suffix Three
implementation
800
x17924
1271A
Suits
brute force
,
greedy
,
math
800
x14937
1270A
Card Game
games
,
greedy
,
math
800
x16945
1269A
Equation
brute force
,
math
800
x21532
1257A
Two Rival Students
greedy
,
math
800
x20471
1255A
Changing Volume
math
800
x17174
1250F
Data Center
brute force
,
implementation
800
x7258
1249A
Yet Another Dividing into Teams
math
800
x22229
1244A
Pens and Pencils
math
800
x19156
1243A
Maximum Square
implementation
800
x15625
1236A
Stones
brute force
,
greedy
,
math
800
x16258
1234A
Equalize Prices Again
math
800
x27784
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x21472
1228A
Distinct Digits
brute force
,
implementation
800
x21627
1223A
CME
math
800
x21583
1220A
Cards
implementation
,
sortings
,
strings
800
x29590
1216A
Prefixes
strings
800
x18620
1209A
Paint the Numbers
greedy
,
implementation
,
math
800
x12182
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