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Codeforces Round 945 (Div. 2)
3 days
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math
combine-tags-by-or
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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
980A
Links and Pearls
implementation
,
math
900
x10260
168A
Wizards and Demonstration
implementation
,
math
900
x10290
1080B
Margarite and the best present
math
900
x11551
1169A
Circle Metro
implementation
,
math
900
x11690
11A
Increasing Sequence
constructive algorithms
,
implementation
,
math
900
x12437
697A
Pineapple Incident
implementation
,
math
900
x12586
554A
Kyoya and Photobooks
brute force
,
math
,
strings
900
x12727
1163A
Eating Soup
greedy
,
math
900
x12756
1197A
DIY Wooden Ladder
greedy
,
math
,
sortings
900
x13385
914A
Perfect Squares
brute force
,
implementation
,
math
900
x13812
591A
Wizards' Duel
implementation
,
math
900
x13904
1106C
Lunar New Year and Number Division
greedy
,
implementation
,
math
,
sortings
900
x14287
1282A
Temporarily unavailable
implementation
,
math
900
x14510
1187A
Stickers and Toys
math
900
x14529
1110A
Parity
math
900
x14556
84A
Toy Army
math
,
number theory
900
x14582
1016A
Death Note
greedy
,
implementation
,
math
900
x14675
1445B
Elimination
greedy
,
math
900
x15061
1764B
Doremy's Perfect Math Class
math
,
number theory
900
x15271
1823B
Sort with Step
brute force
,
math
,
sortings
900
x15335
1225A
Forgetting Things
math
900
x15517
1610A
Anti Light's Cell Guessing
math
900
x15800
1584C
Two Arrays
greedy
,
math
,
sortings
900
x15973
1900B
Laura and Operations
dp
,
math
900
x16018
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16108
1848A
Vika and Her Friends
games
,
math
900
x16239
1208A
XORinacci
math
900
x16293
1668B
Social Distance
greedy
,
math
,
sortings
900
x16333
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x16424
1351B
Square?
brute force
,
implementation
,
math
900
x16458
1248B
Grow The Tree
greedy
,
math
,
sortings
900
x16470
1951A
Dual Trigger
constructive algorithms
,
greedy
,
math
900
x16479
1777B
Emordnilap
combinatorics
,
greedy
,
math
900
x16593
1279A
New Year Garland
math
900
x16612
1609A
Divide and Multiply
greedy
,
implementation
,
math
,
number theory
900
x16682
1427A
Avoiding Zero
math
,
sortings
900
x16837
1047B
Cover Points
geometry
,
math
900
x16897
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x16988
1204B
Mislove Has Lost an Array
greedy
,
math
900
x17172
1440B
Sum of Medians
greedy
,
math
900
x17420
1735B
Tea with Tangerines
greedy
,
math
900
x17725
1175A
From Hero to Zero
implementation
,
math
900
x17805
1183B
Equalize Prices
math
900
x18125
1582B
Luntik and Subsequences
combinatorics
,
math
900
x18871
1291A
Even But Not Even
greedy
,
math
,
strings
900
x19052
1733B
Rule of League
constructive algorithms
,
math
900
x19296
1794B
Not Dividing
constructive algorithms
,
greedy
,
math
900
x19536
1945B
Fireworks
math
,
number theory
900
x19725
1726A
Mainak and Array
greedy
,
math
900
x19901
1272A
Three Friends
brute force
,
greedy
,
math
,
sortings
900
x20049
1436B
Prime Square
constructive algorithms
,
math
900
x20222
1954A
Painting the Ribbon
constructive algorithms
,
greedy
,
math
900
x20454
1430A
Number of Apartments
brute force
,
constructive algorithms
,
math
900
x20464
913A
Modular Exponentiation
implementation
,
math
900
x20609
1828B
Permutation Swap
math
,
number theory
900
x20696
1845B
Come Together
geometry
,
implementation
,
math
900
x20897
1406A
Subset Mex
greedy
,
implementation
,
math
900
x20957
1283B
Candies Division
math
900
x21236
1720A
Burenka Plays with Fractions
math
,
number theory
900
x21765
1679A
AvtoBus
brute force
,
greedy
,
math
,
number theory
900
x21931
1768B
Quick Sort
greedy
,
math
900
x22047
1771A
Hossam and Combinatorics
combinatorics
,
math
,
sortings
900
x22064
1617B
GCD Problem
brute force
,
constructive algorithms
,
math
,
number theory
900
x22434
1543B
Customising the Track
combinatorics
,
greedy
,
math
900
x22673
1420A
Cubes Sorting
math
,
sortings
900
x22849
1779B
MKnez's ConstructiveForces Task
constructive algorithms
,
math
900
x23025
1856B
Good Arrays
implementation
,
math
900
x23158
1354A
Alarm Clock
math
900
x23245
1238A
Prime Subtraction
math
,
number theory
900
x23290
1213A
Chips Moving
math
900
x23506
1326B
Maximums
implementation
,
math
900
x23522
1881B
Three Threadlets
math
900
x23708
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x23840
1467A
Wizard of Orz
constructive algorithms
,
greedy
,
math
900
x23869
1613A
Long Comparison
implementation
,
math
900
x23970
1471A
Strange Partition
greedy
,
math
,
number theory
900
x24564
1607B
Odd Grasshopper
math
900
x24618
598A
Tricky Sum
math
900
x24897
1593B
Make it Divisible by 25
dfs and similar
,
dp
,
greedy
,
math
,
math
900
x25243
1350A
Orac and Factors
math
900
x25575
1543A
Exciting Bets
greedy
,
math
,
number theory
900
x26443
1650B
DIV + MOD
math
900
x26849
1401A
Distance and Axis
constructive algorithms
,
math
900
x26895
1555A
PizzaForces
brute force
,
math
900
x27301
1921C
Sending Messages
greedy
,
math
900
x27349
1537B
Bad Boy
constructive algorithms
,
greedy
,
math
900
x28040
1341A
Nastya and Rice
math
900
x28352
1878C
Vasilije in Cacak
math
900
x28530
1714A
Everyone Loves to Sleep
implementation
,
math
900
x28538
1559A
Mocha and Math
bitmasks
,
constructive algorithms
,
math
900
x28632
1296B
Food Buying
math
900
x29392
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29632
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x31122
1462C
Unique Number
brute force
,
greedy
,
math
900
x31292
1337B
Kana and Dragon Quest game
greedy
,
implementation
,
math
900
x33099
1624B
Make AP
implementation
,
math
900
x34317
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44336
1374B
Multiply by 2, divide by 6
math
900
x45955
1343A
Candies
brute force
,
math
900
x46344
1475B
New Year's Number
brute force
,
dp
,
math
900
x46514
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