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Before contest
Codeforces Round #715 (Div. 1)
23:16:27
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Before contest
Codeforces Round #715 (Div. 2)
23:16:28
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→ Filter Problems
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games
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
#
Name
1511G
Chips on a Board
bitmasks
,
brute force
,
data structures
,
games
,
two pointers
2700
x202
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x4363
1498F
Christmas Game
bitmasks
,
data structures
,
dfs and similar
,
dp
,
games
,
math
,
trees
2500
x313
1495B
Let's Go Hiking
games
,
greedy
1900
x4131
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x18749
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x15028
1411G
No Game No Life
bitmasks
,
games
,
math
,
matrices
2700
x352
1458E
Nim Shortcuts
data structures
,
games
3100
x190
1455C
Ping-pong
constructive algorithms
,
games
,
math
1100
x14303
1451F
Nullify The Matrix
constructive algorithms
,
games
2700
x548
1451D
Circle Game
games
,
geometry
,
math
1700
x6701
1439E
Cheat and Win
bitmasks
,
data structures
,
games
,
trees
3500
x60
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x105
1442F
Differentiating Games
games
,
interactive
3400
x36
1434E
A Convex Game
dsu
,
games
3500
x64
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x28
1425A
Arena of Greed
games
,
greedy
1400
x3562
1419A
Digit Game
games
,
greedy
,
implementation
900
x15201
1404B
Tree Tag
dfs and similar
,
dp
,
games
,
trees
1900
x5291
1396B
Stoned Game
brute force
,
constructive algorithms
,
games
,
greedy
1800
x7602
1402C
Star Trek
*special problem
,
combinatorics
,
dfs and similar
,
dp
,
games
,
graphs
,
matrices
,
trees
2600
x131
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x19757
1383B
GameGame
bitmasks
,
constructive algorithms
,
dp
,
games
,
greedy
,
math
1900
x3592
1382B
Sequential Nim
dp
,
games
1100
x17993
1372D
Omkar and Circle
brute force
,
dp
,
games
,
greedy
2100
x4210
1375F
Integer Game
constructive algorithms
,
games
,
interactive
,
math
2600
x1427
1373B
01 Game
games
900
x20667
1370C
Number Game
games
,
math
,
number theory
1400
x15352
1368F
Lamps on a Circle
games
,
implementation
,
interactive
,
math
2600
x627
1369F
BareLee
dfs and similar
,
dp
,
games
2700
x436
1365A
Matrix Game
games
,
greedy
,
implementation
1100
x18699
1363C
Game On Leaves
games
,
trees
1600
x11917
1346H
Game with Segments
*special problem
,
data structures
,
games
2700
x25
1333D
Challenges in school №41
brute force
,
constructive algorithms
,
games
,
graphs
,
greedy
,
implementation
,
sortings
2100
x3145
1312F
Attack on Red Kingdom
games
,
two pointers
2500
x478
1270A
Card Game
games
,
greedy
,
math
800
x14452
1221E
Game With String
games
2500
x791
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x7697
1215D
Ticket Game
games
,
greedy
,
math
1700
x4709
1197F
Coloring Game
dp
,
games
,
matrices
2700
x146
1194D
1-2-K Game
games
,
math
1700
x4832
1190C
Tokitsukaze and Duel
brute force
,
games
,
greedy
2300
x1359
1190B
Tokitsukaze, CSL and Stone Game
games
1800
x4997
1147F
Zigzag Game
games
,
interactive
3500
x111
1147C
Thanos Nim
games
2000
x2031
1149E
Election Promises
games
,
graphs
3200
x184
1155B
Game with Telephone Numbers
games
,
greedy
,
implementation
1200
x8730
1110G
Tree-Tac-Toe
constructive algorithms
,
games
,
trees
3100
x324
1100D
Dasha and Chess
constructive algorithms
,
games
,
interactive
2500
x665
1102C
Doors Breaking and Repairing
games
1200
x9722
1099F
Cookies
binary search
,
data structures
,
dfs and similar
,
dp
,
games
,
trees
2400
x643
1091H
New Year and the Tricolore Recreation
games
3200
x251
1090G
Combostone
games
,
implementation
2500
x50
1076G
Array Game
data structures
,
games
3000
x186
1033G
Chip Game
games
3500
x83
1033C
Permutation Game
brute force
,
dp
,
games
1600
x4051
1037G
A Game on Strings
games
3200
x188
980C
Posterized
games
,
greedy
1700
x3286
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x23681
930D
Game with Tokens
data structures
,
games
,
implementation
2500
x296
936B
Sleepy Game
dfs and similar
,
dp
,
games
,
graphs
2100
x2435
934A
A Compatible Pair
brute force
,
games
1400
x5587
919F
A Game With Numbers
games
,
graphs
,
shortest paths
2600
x214
917B
MADMAX
dfs and similar
,
dp
,
games
,
graphs
1700
x2774
914H
Ember and Storm's Tree Game
combinatorics
,
dp
,
games
,
trees
3400
x80
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x7052
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x1618
859C
Pie Rules
dp
,
games
1500
x3851
850C
Arpa and a game with Mojtaba
bitmasks
,
dp
,
games
2200
x953
841B
Godsend
games
,
math
1100
x9481
838C
Future Failure
dp
,
games
2800
x103
832A
Sasha and Sticks
games
,
math
800
x15558
819A
Mister B and Boring Game
games
,
greedy
2200
x242
812E
Sagheer and Apple Tree
games
,
trees
2300
x805
794E
Choosing Carrot
games
,
math
2800
x400
794C
Naming Company
games
,
greedy
,
sortings
1800
x2616
786A
Berzerk
dfs and similar
,
dp
,
games
2000
x1786
768E
Game of Stones
bitmasks
,
dp
,
games
2100
x1923
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x7588
725F
Family Photos
games
,
greedy
2900
x246
731E
Funny Game
dp
,
games
2200
x1042
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1058
705B
Spider Man
games
,
math
1100
x7372
630R
Game
games
,
math
1200
x5853
616B
Dinner with Emma
games
,
greedy
1000
x7921
603C
Lieges of Legendre
games
,
math
2200
x1536
594A
Warrior and Archer
games
2300
x1222
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x12204
549C
The Game Of Parity
games
2200
x1522
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x11903
533C
Board Game
games
,
greedy
,
implementation
,
math
1700
x1827
536D
Tavas in Kansas
dp
,
games
2900
x436
520D
Cubes
games
,
greedy
,
implementation
2100
x1399
494E
Sharti
data structures
,
games
3200
x163
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x7489
457F
An easy problem about trees
dp
,
games
,
greedy
,
trees
3200
x57
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x3923
388C
Fox and Card Game
games
,
greedy
,
sortings
2000
x2238
377C
Captains Mode
bitmasks
,
dp
,
games
2200
x897
354B
Game with Strings
bitmasks
,
dp
,
games
2400
x363
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