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Codeforces Round 950 (Div. 3)
34:13:19
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2-sat
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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
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number theory
probabilities
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sortings
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ternary search
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Problems
#
Name
1539B
Love Song
dp
,
implementation
,
strings
800
x23866
1538B
Friends and Candies
greedy
,
math
800
x31148
1538A
Stone Game
brute force
,
dp
,
greedy
800
x35938
1537A
Arithmetic Array
greedy
,
math
800
x36245
1536A
Omkar and Bad Story
brute force
,
constructive algorithms
800
x20066
1535A
Fair Playoff
brute force
,
implementation
800
x46858
1534A
Colour the Flag
brute force
,
implementation
800
x12625
1530B
Putting Plates
constructive algorithms
,
implementation
800
x15620
1530A
Binary Decimal
greedy
,
math
800
x20799
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x29436
1527A
And Then There Were K
bitmasks
800
x34172
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x23906
1525A
Potion-making
math
,
number theory
800
x25108
1523A
Game of Life
implementation
800
x13414
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x43149
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x50002
1519B
The Cake Is a Lie
dp
,
math
800
x30131
1519A
Red and Blue Beans
math
800
x28369
1517A
Sum of 2050
greedy
,
math
800
x25145
1516A
Tit for Tat
greedy
800
x23169
1515A
Phoenix and Gold
constructive algorithms
,
greedy
,
math
800
x20032
1514A
Perfectly Imperfect Array
math
,
number theory
800
x23845
1513A
Array and Peaks
constructive algorithms
,
implementation
800
x19200
1512B
Almost Rectangle
implementation
800
x25060
1512A
Spy Detected!
brute force
,
implementation
800
x60501
1511A
Review Site
greedy
800
x27203
1509A
Average Height
constructive algorithms
800
x25750
1506A
Strange Table
math
800
x30168
1504A
Déjà Vu
constructive algorithms
,
strings
800
x21444
1501A
Alexey and Train
implementation
800
x11540
1499A
Domino on Windowsill
combinatorics
,
constructive algorithms
,
math
800
x21037
1498A
GCD Sum
brute force
,
math
800
x22710
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23942
1493A
Anti-knapsack
constructive algorithms
,
greedy
800
x19121
1492A
Three swimmers
math
800
x22465
1491A
K-th Largest Value
brute force
,
greedy
,
implementation
800
x18054
1490A
Dense Array
greedy
,
math
800
x30719
1487A
Arena
implementation
,
sortings
800
x26237
1482A
Prison Break
math
800
x20163
1481A
Space Navigation
greedy
,
strings
800
x24689
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x25473
1478A
Nezzar and Colorful Balls
brute force
,
greedy
800
x25750
1474A
Puzzle From the Future
greedy
800
x22225
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32943
1472B
Fair Division
dp
,
greedy
,
math
800
x47897
1472A
Cards for Friends
greedy
,
math
800
x41040
1468E
Four Segments
greedy
800
x8630
1466B
Last minute enhancements
dp
,
greedy
800
x22418
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22307
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x26658
1462A
Favorite Sequence
implementation
,
two pointers
800
x40203
1461A
String Generation
constructive algorithms
,
greedy
800
x18419
1459A
Red-Blue Shuffle
math
,
probabilities
800
x16822
1455A
Strange Functions
math
,
number theory
800
x26084
1454B
Unique Bid Auction
implementation
800
x27643
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x39458
1453A
Cancel the Trains
implementation
800
x22302
1452C
Two Brackets
greedy
800
x19083
1452A
Robot Program
math
800
x21874
1451A
Subtract or Divide
greedy
,
math
800
x23963
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x17516
1447A
Add Candies
constructive algorithms
,
math
800
x13660
1445A
Array Rearrangment
greedy
,
sortings
800
x18856
1443A
Kids Seating
constructive algorithms
,
math
800
x16087
1440A
Buy the String
implementation
,
math
800
x19527
1438A
Specific Tastes of Andre
constructive algorithms
,
implementation
800
x19128
1437A
Marketing Scheme
brute force
,
constructive algorithms
,
greedy
,
math
800
x17837
1436A
Reorder
math
800
x22447
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x28030
1433A
Boring Apartments
implementation
,
math
800
x49726
1431A
Selling Hamburgers
*special problem
800
x1794
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19177
1428A
Box is Pull
math
800
x16187
1426A
Floor Number
implementation
,
math
800
x45894
1422A
Fence
geometry
,
math
800
x20664
1421A
XORwice
bitmasks
,
greedy
,
math
800
x27468
1417A
Copy-paste
greedy
,
math
800
x18059
1415A
Prison Break
brute force
,
math
800
x14935
1413A
Finding Sasuke
constructive algorithms
,
math
800
x14606
1411A
In-game Chat
implementation
800
x20158
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x63021
1408A
Circle Coloring
constructive algorithms
800
x12403
1405A
Permutation Forgery
constructive algorithms
800
x21255
1400A
String Similarity
constructive algorithms
,
strings
800
x26588
1399B
Gifts Fixing
greedy
800
x42519
1399A
Remove Smallest
greedy
,
sortings
800
x63291
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24132
1398A
Bad Triangle
geometry
,
math
800
x27064
1397A
Juggling Letters
greedy
,
strings
800
x28173
1393A
Rainbow Dash, Fluttershy and Chess Coloring
greedy
,
math
800
x20238
1392B
Omkar and Infinity Clock
implementation
,
math
800
x18394
1392A
Omkar and Password
greedy
,
math
800
x20230
1391B
Fix You
brute force
,
greedy
,
implementation
800
x26182
1391A
Suborrays
constructive algorithms
,
math
800
x24031
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38763
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24577
1385B
Restore the Permutation by Merger
greedy
800
x36398
1385A
Three Pairwise Maximums
math
800
x37775
1382A
Common Subsequence
brute force
800
x26106
1374A
Required Remainder
math
800
x51242
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