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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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Problems
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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x442951
71A
Way Too Long Words
strings
800
x324109
231A
Team
brute force
,
greedy
800
x273727
1A
Theatre Square
math
1000
x230329
158A
Next Round
*special problem
,
implementation
800
x215545
282A
Bit++
implementation
800
x212503
50A
Domino piling
greedy
,
math
800
x211605
263A
Beautiful Matrix
implementation
800
x206494
112A
Petya and Strings
implementation
,
strings
800
x193123
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x182413
281A
Word Capitalization
implementation
,
strings
800
x180253
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x176709
118A
String Task
implementation
,
strings
1000
x168992
266A
Stones on the Table
implementation
800
x164243
791A
Bear and Big Brother
implementation
800
x162958
617A
Elephant
math
800
x155273
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x154008
59A
Word
implementation
,
strings
800
x148028
69A
Young Physicist
implementation
,
math
1000
x144274
977A
Wrong Subtraction
implementation
800
x141734
96A
Football
implementation
,
strings
900
x138887
110A
Nearly Lucky Number
implementation
800
x130929
734A
Anton and Danik
implementation
,
strings
800
x128055
41A
Translation
implementation
,
strings
800
x123821
116A
Tram
implementation
800
x122744
677A
Vanya and Fence
implementation
800
x119996
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x118220
271A
Beautiful Year
brute force
800
x117547
58A
Chat room
greedy
,
strings
1000
x114265
1030A
In Search of an Easy Problem
implementation
800
x109327
122A
Lucky Division
brute force
,
number theory
1000
x108719
467A
George and Accommodation
implementation
800
x105501
160A
Twins
greedy
,
sortings
900
x104082
344A
Magnets
implementation
800
x103127
136A
Presents
implementation
800
x101510
486A
Calculating Function
implementation
,
math
800
x100809
200B
Drinks
implementation
,
math
800
x99054
318A
Even Odds
math
900
x98273
61A
Ultra-Fast Mathematician
implementation
800
x96066
228A
Is your horseshoe on the other hoof?
implementation
800
x93898
133A
HQ9+
implementation
900
x93809
705A
Hulk
implementation
800
x92476
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x87451
1328A
Divisibility Problem
math
800
x85487
469A
I Wanna Be the Guy
greedy
,
implementation
800
x85068
479A
Expression
brute force
,
math
1000
x83117
144A
Arrival of the General
implementation
800
x82681
520A
Pangram
implementation
,
strings
800
x82022
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x81111
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x78723
208A
Dubstep
strings
900
x78289
443A
Anton and Letters
constructive algorithms
,
implementation
800
x77988
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x77956
996A
Hit the Lottery
dp
,
greedy
800
x77113
131A
cAPS lOCK
implementation
,
strings
1000
x76341
25A
IQ test
brute force
1300
x75859
268A
Games
brute force
800
x75699
785A
Anton and Polyhedrons
implementation
,
strings
800
x75628
1335A
Candies and Two Sisters
math
800
x73062
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x72500
337A
Puzzles
greedy
900
x71458
4C
Registration System
data structures
,
hashing
,
implementation
1300
x70778
510A
Fox And Snake
implementation
800
x70530
230A
Dragons
greedy
,
sortings
1000
x68977
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x66666
427A
Police Recruits
implementation
800
x66638
155A
I_love_\%username\%
brute force
800
x65843
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x65665
1352A
Sum of Round Numbers
implementation
,
math
800
x65239
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x64733
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x64310
581A
Vasya the Hipster
implementation
,
math
800
x63081
339B
Xenia and Ringroad
implementation
1000
x62493
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x62450
1154A
Restoring Three Numbers
math
800
x61627
151A
Soft Drinking
implementation
,
math
800
x59484
451A
Game With Sticks
implementation
900
x59249
1399A
Remove Smallest
greedy
,
sortings
800
x58592
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x58485
189A
Cut Ribbon
brute force
,
dp
1300
x58434
630A
Again Twenty Five!
number theory
800
x55698
466A
Cheap Travel
implementation
1200
x55626
1742A
Sum
implementation
800
x55431
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x54987
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x54708
1512A
Spy Detected!
brute force
,
implementation
800
x54528
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x53790
32B
Borze
expression parsing
,
implementation
800
x53323
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x53258
758A
Holiday Of Equality
implementation
,
math
800
x53241
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x53217
1692A
Marathon
implementation
800
x52879
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x52092
1367A
Short Substrings
implementation
,
strings
800
x51981
1560A
Dislike of Threes
implementation
800
x51819
579A
Raising Bacteria
bitmasks
1000
x51641
455A
Boredom
dp
1500
x51276
1676A
Lucky?
implementation
800
x51236
1343B
Balanced Array
constructive algorithms
,
math
800
x50820
313A
Ilya and Bank Account
implementation
,
number theory
900
x50471
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