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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
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meet-in-the-middle
number theory
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shortest paths
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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x481451
71A
Way Too Long Words
strings
800
x353567
231A
Team
brute force
,
greedy
800
x299217
1A
Theatre Square
math
1000
x245805
282A
Bit++
implementation
800
x236219
158A
Next Round
*special problem
,
implementation
800
x232446
50A
Domino piling
greedy
,
math
800
x228715
263A
Beautiful Matrix
implementation
800
x224651
112A
Petya and Strings
implementation
,
strings
800
x209165
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x198253
281A
Word Capitalization
implementation
,
strings
800
x196083
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x193234
118A
String Task
implementation
,
strings
1000
x181234
791A
Bear and Big Brother
implementation
800
x178868
266A
Stones on the Table
implementation
800
x178050
617A
Elephant
math
800
x170156
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x167652
59A
Word
implementation
,
strings
800
x162037
69A
Young Physicist
implementation
,
math
1000
x155032
977A
Wrong Subtraction
implementation
800
x154902
96A
Football
implementation
,
strings
900
x149074
110A
Nearly Lucky Number
implementation
800
x142514
734A
Anton and Danik
implementation
,
strings
800
x140218
41A
Translation
implementation
,
strings
800
x134921
116A
Tram
implementation
800
x132111
677A
Vanya and Fence
implementation
800
x130674
271A
Beautiful Year
brute force
800
x127565
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126775
58A
Chat room
greedy
,
strings
1000
x122201
1030A
In Search of an Easy Problem
implementation
800
x119944
122A
Lucky Division
brute force
,
number theory
1000
x115983
467A
George and Accommodation
implementation
800
x113737
344A
Magnets
implementation
800
x111770
160A
Twins
greedy
,
sortings
900
x110817
486A
Calculating Function
implementation
,
math
800
x109354
136A
Presents
implementation
800
x109100
200B
Drinks
implementation
,
math
800
x107746
318A
Even Odds
math
900
x106183
61A
Ultra-Fast Mathematician
implementation
800
x103601
228A
Is your horseshoe on the other hoof?
implementation
800
x101956
133A
HQ9+
implementation
900
x99981
705A
Hulk
implementation
800
x99391
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x94440
1328A
Divisibility Problem
math
800
x93320
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91341
520A
Pangram
implementation
,
strings
800
x89789
144A
Arrival of the General
implementation
800
x88952
479A
Expression
brute force
,
math
1000
x88585
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87087
996A
Hit the Lottery
dp
,
greedy
800
x84189
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83941
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83890
208A
Dubstep
strings
900
x83536
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82421
785A
Anton and Polyhedrons
implementation
,
strings
800
x82181
131A
cAPS lOCK
implementation
,
strings
1000
x81197
25A
IQ test
brute force
1300
x81081
268A
Games
brute force
800
x80907
1335A
Candies and Two Sisters
math
800
x78596
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77866
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77151
510A
Fox And Snake
implementation
800
x76983
337A
Puzzles
greedy
900
x75548
230A
Dragons
greedy
,
sortings
1000
x74319
427A
Police Recruits
implementation
800
x72461
1352A
Sum of Round Numbers
implementation
,
math
800
x71916
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x71119
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70851
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70723
155A
I_love_\%username\%
brute force
800
x70572
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69839
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67266
581A
Vasya the Hipster
implementation
,
math
800
x67116
339B
Xenia and Ringroad
implementation
1000
x66369
1154A
Restoring Three Numbers
math
800
x66344
151A
Soft Drinking
implementation
,
math
800
x65745
1742A
Sum
implementation
800
x64562
1399A
Remove Smallest
greedy
,
sortings
800
x62729
451A
Game With Sticks
implementation
900
x62601
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62538
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62470
189A
Cut Ribbon
brute force
,
dp
1300
x62457
630A
Again Twenty Five!
number theory
800
x61946
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60322
1512A
Spy Detected!
brute force
,
implementation
800
x59901
1692A
Marathon
implementation
800
x59823
466A
Cheap Travel
implementation
1200
x59520
32B
Borze
expression parsing
,
implementation
800
x58689
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58368
1676A
Lucky?
implementation
800
x57963
758A
Holiday Of Equality
implementation
,
math
800
x57265
1669A
Division?
implementation
800
x57097
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56985
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56628
579A
Raising Bacteria
bitmasks
1000
x56194
1560A
Dislike of Threes
implementation
800
x55869
1807A
Plus or Minus
implementation
800
x55660
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55508
1475A
Odd Divisor
math
,
number theory
900
x55132
1791A
Codeforces Checking
implementation
,
strings
800
x54908
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