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ICPC Challenge
→ Pay attention
Before contest
Pinely Round 3 (Div. 1 + Div. 2)
4 days
→ Filter Problems
Difficulty:
—
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
Standings
Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x445421
71A
Way Too Long Words
strings
800
x326070
231A
Team
brute force
,
greedy
800
x275314
1A
Theatre Square
math
1000
x231402
158A
Next Round
*special problem
,
implementation
800
x216690
282A
Bit++
implementation
800
x214069
50A
Domino piling
greedy
,
math
800
x212695
263A
Beautiful Matrix
implementation
800
x207743
112A
Petya and Strings
implementation
,
strings
800
x194160
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x183508
281A
Word Capitalization
implementation
,
strings
800
x181361
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x177751
118A
String Task
implementation
,
strings
1000
x169731
266A
Stones on the Table
implementation
800
x165233
791A
Bear and Big Brother
implementation
800
x164056
617A
Elephant
math
800
x156214
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x155036
59A
Word
implementation
,
strings
800
x148910
69A
Young Physicist
implementation
,
math
1000
x144965
977A
Wrong Subtraction
implementation
800
x142671
96A
Football
implementation
,
strings
900
x139632
110A
Nearly Lucky Number
implementation
800
x131721
734A
Anton and Danik
implementation
,
strings
800
x128841
41A
Translation
implementation
,
strings
800
x124522
116A
Tram
implementation
800
x123385
677A
Vanya and Fence
implementation
800
x120628
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x118837
271A
Beautiful Year
brute force
800
x118214
58A
Chat room
greedy
,
strings
1000
x114747
1030A
In Search of an Easy Problem
implementation
800
x110158
122A
Lucky Division
brute force
,
number theory
1000
x109178
467A
George and Accommodation
implementation
800
x106013
160A
Twins
greedy
,
sortings
900
x104487
344A
Magnets
implementation
800
x103625
136A
Presents
implementation
800
x101993
486A
Calculating Function
implementation
,
math
800
x101346
200B
Drinks
implementation
,
math
800
x99574
318A
Even Odds
math
900
x98737
61A
Ultra-Fast Mathematician
implementation
800
x96648
228A
Is your horseshoe on the other hoof?
implementation
800
x94455
133A
HQ9+
implementation
900
x94187
705A
Hulk
implementation
800
x92905
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x87910
1328A
Divisibility Problem
math
800
x85964
469A
I Wanna Be the Guy
greedy
,
implementation
800
x85452
479A
Expression
brute force
,
math
1000
x83485
144A
Arrival of the General
implementation
800
x83092
520A
Pangram
implementation
,
strings
800
x82476
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x81437
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x79006
208A
Dubstep
strings
900
x78610
443A
Anton and Letters
constructive algorithms
,
implementation
800
x78341
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x78217
996A
Hit the Lottery
dp
,
greedy
800
x77659
131A
cAPS lOCK
implementation
,
strings
1000
x76645
25A
IQ test
brute force
1300
x76204
785A
Anton and Polyhedrons
implementation
,
strings
800
x76050
268A
Games
brute force
800
x76015
1335A
Candies and Two Sisters
math
800
x73404
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x72836
337A
Puzzles
greedy
900
x71737
4C
Registration System
data structures
,
hashing
,
implementation
1300
x71115
510A
Fox And Snake
implementation
800
x70929
230A
Dragons
greedy
,
sortings
1000
x69310
427A
Police Recruits
implementation
800
x66977
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x66946
155A
I_love_\%username\%
brute force
800
x66198
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x65965
1352A
Sum of Round Numbers
implementation
,
math
800
x65625
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x65074
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x64723
581A
Vasya the Hipster
implementation
,
math
800
x63319
339B
Xenia and Ringroad
implementation
1000
x62749
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x62707
1154A
Restoring Three Numbers
math
800
x61906
151A
Soft Drinking
implementation
,
math
800
x59852
451A
Game With Sticks
implementation
900
x59440
1399A
Remove Smallest
greedy
,
sortings
800
x58805
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x58803
189A
Cut Ribbon
brute force
,
dp
1300
x58668
630A
Again Twenty Five!
number theory
800
x56091
466A
Cheap Travel
implementation
1200
x55882
1742A
Sum
implementation
800
x55857
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x55429
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x54969
1512A
Spy Detected!
brute force
,
implementation
800
x54772
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x53973
32B
Borze
expression parsing
,
implementation
800
x53656
758A
Holiday Of Equality
implementation
,
math
800
x53468
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x53465
1692A
Marathon
implementation
800
x53431
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x53430
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x52281
1367A
Short Substrings
implementation
,
strings
800
x52148
1560A
Dislike of Threes
implementation
800
x52021
579A
Raising Bacteria
bitmasks
1000
x51892
1676A
Lucky?
implementation
800
x51572
455A
Boredom
dp
1500
x51455
1343B
Balanced Array
constructive algorithms
,
math
800
x51013
313A
Ilya and Bank Account
implementation
,
number theory
900
x50665
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