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Codeforces Round 973 (Div. 2)
13:36:45
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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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Problems
#
Name
1452C
Two Brackets
greedy
800
x19461
1452A
Robot Program
math
800
x22064
1451A
Subtract or Divide
greedy
,
math
800
x24177
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x17967
1447A
Add Candies
constructive algorithms
,
math
800
x13776
1445A
Array Rearrangment
greedy
,
sortings
800
x19090
1443A
Kids Seating
constructive algorithms
,
math
800
x16209
1440A
Buy the String
implementation
,
math
800
x19710
1438A
Specific Tastes of Andre
constructive algorithms
,
implementation
800
x19235
1437A
Marketing Scheme
brute force
,
constructive algorithms
,
greedy
,
math
800
x17999
1436A
Reorder
math
800
x22651
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x28369
1433A
Boring Apartments
implementation
,
math
800
x52074
1431A
Selling Hamburgers
*special problem
800
x1859
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19356
1428A
Box is Pull
math
800
x16296
1426A
Floor Number
implementation
,
math
800
x47723
1422A
Fence
geometry
,
math
800
x20864
1421A
XORwice
bitmasks
,
greedy
,
math
800
x28787
1417A
Copy-paste
greedy
,
math
800
x18224
1415A
Prison Break
brute force
,
math
800
x15149
1413A
Finding Sasuke
constructive algorithms
,
math
800
x14750
1411A
In-game Chat
implementation
800
x20590
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x65950
1408A
Circle Coloring
constructive algorithms
800
x12489
1405A
Permutation Forgery
constructive algorithms
800
x21431
1400A
String Similarity
constructive algorithms
,
strings
800
x26989
1399B
Gifts Fixing
greedy
800
x43421
1399A
Remove Smallest
greedy
,
sortings
800
x66112
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24555
1398A
Bad Triangle
geometry
,
math
800
x27491
1397A
Juggling Letters
greedy
,
strings
800
x28528
1393A
Rainbow Dash, Fluttershy and Chess Coloring
greedy
,
math
800
x20498
1392B
Omkar and Infinity Clock
implementation
,
math
800
x18468
1392A
Omkar and Password
greedy
,
math
800
x20577
1391B
Fix You
brute force
,
greedy
,
implementation
800
x27171
1391A
Suborrays
constructive algorithms
,
math
800
x24350
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x41011
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24897
1385B
Restore the Permutation by Merger
greedy
800
x37094
1385A
Three Pairwise Maximums
math
800
x39009
1382A
Common Subsequence
brute force
800
x26479
1374A
Required Remainder
math
800
x53491
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x31886
1371A
Magical Sticks
math
800
x45883
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x51736
1369A
FashionabLee
geometry
,
math
800
x36457
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x39061
1367B
Even Array
greedy
,
math
800
x53271
1367A
Short Substrings
implementation
,
strings
800
x57171
1360B
Honest Coach
greedy
,
sortings
800
x47748
1360A
Minimal Square
greedy
,
math
800
x50350
1358A
Park Lighting
greedy
,
math
800
x39311
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x49388
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x40556
1352A
Sum of Round Numbers
implementation
,
math
800
x78773
1351A
A+B (Trial Problem)
implementation
800
x23720
1348A
Phoenix and Balance
greedy
,
math
800
x39399
1345A
Puzzle Pieces
math
800
x24150
1343B
Balanced Array
constructive algorithms
,
math
800
x56289
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x38100
1335A
Candies and Two Sisters
math
800
x83749
1328A
Divisibility Problem
math
800
x100446
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x35935
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x39868
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x19738
1316A
Grade Allocation
implementation
800
x18648
1315A
Dead Pixel
implementation
800
x12059
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25880
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x41785
1307A
Cow and Haybales
greedy
,
implementation
800
x14944
1305A
Kuroni and the Gifts
brute force
,
constructive algorithms
,
greedy
,
sortings
800
x14031
1304A
Two Rabbits
math
800
x25408
1303A
Erasing Zeroes
implementation
,
strings
800
x32078
1301A
Three Strings
implementation
,
strings
800
x19354
1300A
Non-zero
implementation
,
math
800
x20968
1296A
Array with Odd Sum
math
800
x41547
1294A
Collecting Coins
math
800
x46608
1287A
Angry Students
greedy
,
implementation
800
x20564
1285A
Mezo Playing Zoma
math
800
x28038
1284A
New Year and Naming
implementation
,
strings
800
x17986
1283A
Minutes Before the New Year
math
800
x49483
1281A
Suffix Three
implementation
800
x17931
1271A
Suits
brute force
,
greedy
,
math
800
x14941
1270A
Card Game
games
,
greedy
,
math
800
x16948
1269A
Equation
brute force
,
math
800
x21551
1257A
Two Rival Students
greedy
,
math
800
x20494
1255A
Changing Volume
math
800
x17179
1250F
Data Center
brute force
,
implementation
800
x7262
1249A
Yet Another Dividing into Teams
math
800
x22233
1244A
Pens and Pencils
math
800
x19162
1243A
Maximum Square
implementation
800
x15632
1236A
Stones
brute force
,
greedy
,
math
800
x16274
1234A
Equalize Prices Again
math
800
x27795
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x21482
1228A
Distinct Digits
brute force
,
implementation
800
x21638
1223A
CME
math
800
x21585
1220A
Cards
implementation
,
sortings
,
strings
800
x29631
1216A
Prefixes
strings
800
x18634
1209A
Paint the Numbers
greedy
,
implementation
,
math
800
x12186
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