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Codeforces Round 876 (Div. 2)
05:43:57
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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
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number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x392164
1A
Theatre Square
math
1000
x209364
50A
Domino piling
greedy
,
math
800
x188235
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x135426
617A
Elephant
math
800
x134810
69A
Young Physicist
implementation
,
math
1000
x129980
486A
Calculating Function
implementation
,
math
800
x89034
200B
Drinks
implementation
,
math
800
x88405
318A
Even Odds
math
900
x87845
479A
Expression
brute force
,
math
1000
x75249
1328A
Divisibility Problem
math
800
x74876
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x73458
1335A
Candies and Two Sisters
math
800
x65272
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x61407
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x58512
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x58254
1352A
Sum of Round Numbers
implementation
,
math
800
x57402
581A
Vasya the Hipster
implementation
,
math
800
x56954
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x56557
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x56298
1154A
Restoring Three Numbers
math
800
x54750
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x53268
151A
Soft Drinking
implementation
,
math
800
x51636
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x49625
758A
Holiday Of Equality
implementation
,
math
800
x47971
1343B
Balanced Array
constructive algorithms
,
math
800
x47254
1475A
Odd Divisor
math
,
number theory
900
x44835
1374A
Required Remainder
math
800
x44310
1367B
Even Array
greedy
,
math
800
x44172
1624A
Plus One on the Subset
math
800
x43062
1360A
Minimal Square
greedy
,
math
800
x42740
1433A
Boring Apartments
implementation
,
math
800
x42656
9A
Die Roll
math
,
probabilities
800
x42201
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x41737
1343A
Candies
brute force
,
math
900
x41401
1551A
Polycarp and Coins
greedy
,
math
800
x41386
1472B
Fair Division
dp
,
greedy
,
math
800
x41118
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x40206
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x40065
1352C
K-th Not Divisible by n
binary search
,
math
1200
x39768
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x39750
1475B
New Year's Number
brute force
,
dp
,
math
900
x39665
1374B
Multiply by 2, divide by 6
math
900
x39203
1283A
Minutes Before the New Year
math
800
x38960
1371A
Magical Sticks
math
800
x38947
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x38458
1426A
Floor Number
implementation
,
math
800
x38452
1294A
Collecting Coins
math
800
x38092
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x37936
1472A
Cards for Friends
greedy
,
math
800
x37520
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x37443
584A
Olesya and Rodion
math
1000
x37136
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x36880
1676B
Equal Candies
greedy
,
math
,
sortings
800
x36473
1348A
Phoenix and Balance
greedy
,
math
800
x36151
1542A
Odd Set
math
800
x36090
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x35937
1296A
Array with Odd Sum
math
800
x35209
476A
Dreamoon and Stairs
implementation
,
math
1000
x35204
1358A
Park Lighting
greedy
,
math
800
x35110
1385A
Three Pairwise Maximums
math
800
x34386
1579A
Casimir's String Solitaire
math
,
strings
800
x34347
233A
Perfect Permutation
implementation
,
math
800
x34298
1729A
Two Elevators
math
800
x34139
1342A
Road To Zero
greedy
,
math
1000
x33903
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x33575
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x33553
1369A
FashionabLee
geometry
,
math
800
x33334
1520D
Same Differences
data structures
,
hashing
,
math
1200
x33329
1327A
Sum of Odd Integers
math
1100
x32242
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x32228
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x32202
1537A
Arithmetic Array
greedy
,
math
800
x32149
1660A
Vasya and Coins
greedy
,
math
800
x32012
1593A
Elections
math
800
x31985
1560B
Who's Opposite?
math
800
x31714
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x31392
1353C
Board Moves
math
1000
x31273
124A
The number of positions
math
1000
x31070
1363A
Odd Selection
brute force
,
implementation
,
math
1200
x30622
1521A
Nastia and Nearly Good Numbers
constructive algorithms
,
math
,
number theory
1000
x30489
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x30432
1337B
Kana and Dragon Quest game
greedy
,
implementation
,
math
900
x30432
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x30403
1352B
Same Parity Summands
constructive algorithms
,
math
1200
x30130
1624B
Make AP
implementation
,
math
900
x29794
1476A
K-divisible Sum
binary search
,
constructive algorithms
,
greedy
,
math
1000
x29667
1538B
Friends and Candies
greedy
,
math
800
x29206
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x28917
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x28895
1716A
2-3 Moves
greedy
,
math
800
x28665
1490A
Dense Array
greedy
,
math
800
x28605
1506A
Strange Table
math
800
x28288
1549A
Gregor and Cryptography
math
,
number theory
800
x28167
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x28017
1611A
Make Even
constructive algorithms
,
math
800
x27958
1675A
Food for Animals
greedy
,
math
800
x27938
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x27856
1462C
Unique Number
brute force
,
greedy
,
math
900
x27845
1294C
Product of Three Numbers
greedy
,
math
,
number theory
1300
x27834
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