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math
combine-tags-by-or
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2-sat
binary search
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brute force
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combinatorics
constructive algorithms
data structures
dfs and similar
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dp
dsu
expression parsing
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greedy
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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x481502
1A
Theatre Square
math
1000
x245821
50A
Domino piling
greedy
,
math
800
x228745
617A
Elephant
math
800
x170174
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x167680
69A
Young Physicist
implementation
,
math
1000
x155043
486A
Calculating Function
implementation
,
math
800
x109366
200B
Drinks
implementation
,
math
800
x107758
318A
Even Odds
math
900
x106198
1328A
Divisibility Problem
math
800
x93336
479A
Expression
brute force
,
math
1000
x88595
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87097
1335A
Candies and Two Sisters
math
800
x78601
1352A
Sum of Round Numbers
implementation
,
math
800
x71936
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71131
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70861
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70739
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69843
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67276
581A
Vasya the Hipster
implementation
,
math
800
x67124
1154A
Restoring Three Numbers
math
800
x66350
151A
Soft Drinking
implementation
,
math
800
x65754
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62481
758A
Holiday Of Equality
implementation
,
math
800
x57271
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56989
1475A
Odd Divisor
math
,
number theory
900
x55139
1343B
Balanced Array
constructive algorithms
,
math
800
x53660
9A
Die Roll
math
,
probabilities
800
x52515
1374A
Required Remainder
math
800
x50588
1367B
Even Array
greedy
,
math
800
x50253
1352C
K-th Not Divisible by n
binary search
,
math
1200
x49878
1624A
Plus One on the Subset
math
800
x49750
1433A
Boring Apartments
implementation
,
math
800
x49276
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48717
1551A
Polycarp and Coins
greedy
,
math
800
x48400
1360A
Minimal Square
greedy
,
math
800
x48007
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47915
1472B
Fair Division
dp
,
greedy
,
math
800
x47480
1283A
Minutes Before the New Year
math
800
x46509
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46463
1475B
New Year's Number
brute force
,
dp
,
math
900
x46397
1343A
Candies
brute force
,
math
900
x46255
1374B
Multiply by 2, divide by 6
math
900
x45810
1426A
Floor Number
implementation
,
math
800
x45509
1676B
Equal Candies
greedy
,
math
,
sortings
800
x45143
1371A
Magical Sticks
math
800
x44295
1294A
Collecting Coins
math
800
x44261
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44259
1873B
Good Kid
brute force
,
greedy
,
math
800
x44187
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x44111
1857A
Array Coloring
greedy
,
math
800
x43467
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43447
584A
Olesya and Rodion
math
1000
x42839
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x42811
1520D
Same Differences
data structures
,
hashing
,
math
1200
x42588
1542A
Odd Set
math
800
x42279
476A
Dreamoon and Stairs
implementation
,
math
1000
x41116
1472A
Cards for Friends
greedy
,
math
800
x40829
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40683
233A
Perfect Permutation
implementation
,
math
800
x40405
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x39863
1921A
Square
greedy
,
math
800
x39837
1296A
Array with Odd Sum
math
800
x39473
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x38961
1729A
Two Elevators
math
800
x38908
1941A
Rudolf and the Ticket
brute force
,
math
800
x38760
1348A
Phoenix and Balance
greedy
,
math
800
x38380
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38332
1342A
Road To Zero
greedy
,
math
1000
x38332
1358A
Park Lighting
greedy
,
math
800
x38094
1579A
Casimir's String Solitaire
math
,
strings
800
x37794
1899A
Game with Integers
games
,
math
,
number theory
800
x37708
1385A
Three Pairwise Maximums
math
800
x37555
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37230
1327A
Sum of Odd Integers
math
1100
x36892
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36773
124A
The number of positions
math
1000
x36283
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x36012
1537A
Arithmetic Array
greedy
,
math
800
x35999
1955A
Yogurt Sale
math
800
x35826
1790A
Polycarp and the Day of Pi
implementation
,
math
,
strings
800
x35615
1369A
FashionabLee
geometry
,
math
800
x35576
1593A
Elections
math
800
x35524
1352B
Same Parity Summands
constructive algorithms
,
math
1200
x35310
1521A
Nastia and Nearly Good Numbers
constructive algorithms
,
math
,
number theory
1000
x35305
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35299
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x35245
1873C
Target Practice
implementation
,
math
800
x35188
1660A
Vasya and Coins
greedy
,
math
800
x35047
1476A
K-divisible Sum
binary search
,
constructive algorithms
,
greedy
,
math
1000
x34997
1560B
Who's Opposite?
math
800
x34685
1950C
Clock Conversion
implementation
,
math
800
x34554
1363A
Odd Selection
brute force
,
implementation
,
math
1200
x34365
1624B
Make AP
implementation
,
math
900
x34218
1858A
Buttons
games
,
greedy
,
math
800
x34205
1353C
Board Moves
math
1000
x34186
1337B
Kana and Dragon Quest game
greedy
,
implementation
,
math
900
x33044
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x32863
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32845
1294C
Product of Three Numbers
greedy
,
math
,
number theory
1300
x32289
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