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implementation
combine-tags-by-or
*combine tags by OR
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
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Status
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Custom test
Problems
#
Name
282A
Bit++
implementation
800
x236887
158A
Next Round
*special problem
,
implementation
800
x232899
263A
Beautiful Matrix
implementation
800
x225229
112A
Petya and Strings
implementation
,
strings
800
x209626
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x198680
281A
Word Capitalization
implementation
,
strings
800
x196522
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x193769
118A
String Task
implementation
,
strings
1000
x181547
791A
Bear and Big Brother
implementation
800
x179321
266A
Stones on the Table
implementation
800
x178397
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x168049
59A
Word
implementation
,
strings
800
x162464
69A
Young Physicist
implementation
,
math
1000
x155331
977A
Wrong Subtraction
implementation
800
x155270
96A
Football
implementation
,
strings
900
x149359
110A
Nearly Lucky Number
implementation
800
x142861
734A
Anton and Danik
implementation
,
strings
800
x140576
41A
Translation
implementation
,
strings
800
x135225
116A
Tram
implementation
800
x132358
677A
Vanya and Fence
implementation
800
x131001
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x127012
1030A
In Search of an Easy Problem
implementation
800
x120267
467A
George and Accommodation
implementation
800
x114009
344A
Magnets
implementation
800
x112032
486A
Calculating Function
implementation
,
math
800
x109604
136A
Presents
implementation
800
x109345
200B
Drinks
implementation
,
math
800
x108022
61A
Ultra-Fast Mathematician
implementation
800
x103810
228A
Is your horseshoe on the other hoof?
implementation
800
x102187
133A
HQ9+
implementation
900
x100148
705A
Hulk
implementation
800
x99594
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94621
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91544
520A
Pangram
implementation
,
strings
800
x90006
144A
Arrival of the General
implementation
800
x89167
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87244
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84105
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x84050
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82531
785A
Anton and Polyhedrons
implementation
,
strings
800
x82401
131A
cAPS lOCK
implementation
,
strings
1000
x81329
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78000
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77325
510A
Fox And Snake
implementation
800
x77204
427A
Police Recruits
implementation
800
x72622
1352A
Sum of Round Numbers
implementation
,
math
800
x72163
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71253
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70988
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70924
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69968
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67430
581A
Vasya the Hipster
implementation
,
math
800
x67250
339B
Xenia and Ringroad
implementation
1000
x66456
151A
Soft Drinking
implementation
,
math
800
x65911
1742A
Sum
implementation
800
x64866
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62902
451A
Game With Sticks
implementation
900
x62721
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60518
1692A
Marathon
implementation
800
x60060
1512A
Spy Detected!
brute force
,
implementation
800
x60030
466A
Cheap Travel
implementation
1200
x59647
32B
Borze
expression parsing
,
implementation
800
x58861
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58489
1676A
Lucky?
implementation
800
x58163
758A
Holiday Of Equality
implementation
,
math
800
x57385
1669A
Division?
implementation
800
x57303
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56714
1560A
Dislike of Threes
implementation
800
x55972
1807A
Plus or Minus
implementation
800
x55916
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55624
1791A
Codeforces Checking
implementation
,
strings
800
x55143
1367A
Short Substrings
implementation
,
strings
800
x54910
1760A
Medium Number
implementation
,
sortings
800
x53933
313A
Ilya and Bank Account
implementation
,
number theory
900
x53652
703A
Mishka and Game
implementation
800
x53624
431A
Black Square
implementation
800
x51569
1850A
To My Critics
implementation
,
sortings
800
x51221
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50306
1915A
Odd One Out
bitmasks
,
implementation
800
x49842
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49718
1433A
Boring Apartments
implementation
,
math
800
x49362
1873A
Short Sort
brute force
,
implementation
800
x48882
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48837
1619A
Square String?
implementation
,
strings
800
x48562
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x48000
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47895
1722A
Spell Check
implementation
800
x47001
492A
Vanya and Cubes
implementation
800
x46816
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46583
1535A
Fair Playoff
brute force
,
implementation
800
x46428
707A
Brain's Photos
implementation
800
x46316
1829A
Love Story
implementation
,
strings
800
x45987
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45847
1426A
Floor Number
implementation
,
math
800
x45580
1703B
ICPC Balloons
data structures
,
implementation
800
x45522
474B
Worms
binary search
,
implementation
1200
x44870
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44549
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44546
379A
New Year Candles
implementation
1000
x44514
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44316
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