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When submitting a solution in C++, please select either C++14 (GCC 6-32) or C++17 (GCC 7-32) as your compiler.
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Codeforces Round 936 (Div. 2)
2 days
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probabilities
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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Custom test
Problems
#
Name
1578G
Game of Chance
math
,
probabilities
3500
x31
1761G
Centroid Guess
interactive
,
probabilities
,
trees
3500
x95
1477F
Nezzar and Chocolate Bars
combinatorics
,
fft
,
math
,
probabilities
3500
x115
1479E
School Clubs
dp
,
fft
,
math
,
number theory
,
probabilities
3500
x171
1835E
Old Mobile
combinatorics
,
dp
,
probabilities
3500
x193
1190F
Tokitsukaze and Powers
number theory
,
probabilities
3400
x86
913H
Don't Exceed
math
,
probabilities
3400
x121
949F
Astronomy
geometry
,
probabilities
3300
x56
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x213
1148G
Gold Experience
constructive algorithms
,
graphs
,
math
,
number theory
,
probabilities
3300
x311
1556H
DIY Tree
graphs
,
greedy
,
math
,
probabilities
3300
x314
1210F2
Marek and Matching (hard version)
brute force
,
probabilities
3200
x185
1819E
Roads in E City
interactive
,
math
,
probabilities
,
trees
3200
x233
1081G
Mergesort Strikes Back
math
,
probabilities
3200
x317
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x512
1349D
Slime and Biscuits
math
,
probabilities
3200
x761
1912F
Fugitive Frenzy
math
,
probabilities
3100
x92
1210F1
Marek and Matching (easy version)
brute force
,
probabilities
3100
x184
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x285
1067D
Computer Game
dp
,
greedy
,
math
,
probabilities
3100
x345
1924E
Paper Cutting Again
combinatorics
,
probabilities
3100
x368
1286D
LCC
data structures
,
math
,
matrices
,
probabilities
3100
x541
1340E
Nastya and Bees
graphs
,
interactive
,
probabilities
3000
x50
1236F
Alice and the Cactus
dfs and similar
,
graphs
,
math
,
probabilities
3000
x161
1526F
Median Queries
constructive algorithms
,
interactive
,
probabilities
3000
x246
303E
Random Ranking
dp
,
math
,
probabilities
3000
x299
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x526
1438F
Olha and Igor
interactive
,
probabilities
,
trees
3000
x601
1361E
James and the Chase
dfs and similar
,
graphs
,
probabilities
,
trees
3000
x607
1267G
Game Relics
math
,
probabilities
3000
x612
1392H
ZS Shuffles Cards
combinatorics
,
dp
,
math
,
probabilities
3000
x648
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2004
1571H
Laser Beams
*special problem
,
geometry
,
probabilities
2900
x43
679D
Bear and Chase
brute force
,
dfs and similar
,
graphs
,
implementation
,
math
,
probabilities
2900
x307
1847E
Triangle Platinum?
brute force
,
combinatorics
,
implementation
,
interactive
,
math
,
probabilities
2900
x309
1562F
Tubular Bells
interactive
,
math
,
number theory
,
probabilities
2900
x371
1630E
Expected Components
combinatorics
,
math
,
number theory
,
probabilities
2900
x412
1705F
Mark and the Online Exam
bitmasks
,
constructive algorithms
,
interactive
,
probabilities
2900
x561
1198F
GCD Groups 2
greedy
,
number theory
,
probabilities
2900
x801
1264D2
Beautiful Bracket Sequence (hard version)
combinatorics
,
probabilities
2900
x829
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x925
364D
Ghd
brute force
,
math
,
probabilities
2900
x1935
802F
Marmots (hard)
math
,
probabilities
2800
x119
335E
Counting Skyscrapers
dp
,
math
,
probabilities
2800
x202
1773G
Game of Questions
bitmasks
,
combinatorics
,
dp
,
fft
,
math
,
probabilities
2800
x303
277D
Google Code Jam
dp
,
probabilities
2800
x322
1826F
Fading into Fog
geometry
,
interactive
,
math
,
probabilities
2800
x332
446D
DZY Loves Games
math
,
matrices
,
probabilities
2800
x366
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x416
1316F
Battalion Strength
data structures
,
divide and conquer
,
probabilities
2800
x501
913F
Strongly Connected Tournament
dp
,
graphs
,
math
,
probabilities
2800
x598
1874D
Jellyfish and Miku
divide and conquer
,
dp
,
math
,
probabilities
2800
x615
1626F
A Random Code Problem
combinatorics
,
dp
,
math
,
number theory
,
probabilities
2800
x691
1842G
Tenzing and Random Operations
combinatorics
,
dp
,
math
,
probabilities
2800
x814
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1453
107E
Darts
geometry
,
probabilities
2700
x126
989E
A Trance of Nightfall
dp
,
geometry
,
matrices
,
probabilities
2700
x226
293D
Ksusha and Square
geometry
,
math
,
probabilities
,
two pointers
2700
x231
457D
Bingo!
combinatorics
,
math
,
probabilities
2700
x261
183D
T-shirt
dp
,
greedy
,
probabilities
2700
x388
1578M
The Mind
constructive algorithms
,
interactive
,
probabilities
2700
x429
1510I
Is It Rated?
greedy
,
interactive
,
math
,
probabilities
2700
x439
98E
Help Shrek and Donkey
dp
,
games
,
math
,
probabilities
2700
x439
623D
Birthday
greedy
,
math
,
probabilities
2700
x464
643E
Bear and Destroying Subtrees
dp
,
math
,
probabilities
,
trees
2700
x570
113D
Museum
math
,
matrices
,
probabilities
2700
x640
464D
World of Darkraft - 2
dp
,
probabilities
2700
x649
1295F
Good Contest
combinatorics
,
dp
,
probabilities
2700
x948
1364E
X-OR
bitmasks
,
constructive algorithms
,
divide and conquer
,
interactive
,
probabilities
2700
x1051
1254D
Tree Queries
data structures
,
probabilities
,
trees
2700
x1103
605E
Intergalaxy Trips
probabilities
,
shortest paths
2700
x1297
1765C
Card Guessing
combinatorics
,
dp
,
probabilities
2600
x351
1765G
Guess the String
constructive algorithms
,
interactive
,
probabilities
2600
x356
229E
Gifts
combinatorics
,
dp
,
math
,
probabilities
2600
x443
248E
Piglet's Birthday
dp
,
math
,
probabilities
2600
x553
1354G
Find a Gift
binary search
,
interactive
,
probabilities
2600
x709
1172C2
Nauuo and Pictures (hard version)
dp
,
probabilities
2600
x714
1530F
Bingo
bitmasks
,
combinatorics
,
dp
,
math
,
probabilities
2600
x720
1153F
Serval and Bonus Problem
combinatorics
,
dp
,
math
,
probabilities
2600
x737
1823F
Random Walk
dp
,
graphs
,
math
,
probabilities
,
trees
2600
x746
1380G
Circular Dungeon
greedy
,
math
,
probabilities
2600
x758
494C
Helping People
dp
,
probabilities
2600
x811
482C
Game with Strings
bitmasks
,
dp
,
probabilities
2600
x861
1835C
Twin Clusters
bitmasks
,
brute force
,
constructive algorithms
,
math
,
probabilities
2600
x913
1264D1
Beautiful Bracket Sequence (easy version)
combinatorics
,
dp
,
probabilities
2600
x1157
258D
Little Elephant and Broken Sorting
dp
,
math
,
probabilities
2600
x1200
1523E
Crypto Lights
combinatorics
,
dp
,
math
,
probabilities
2600
x1510
1278F
Cards
combinatorics
,
dp
,
math
,
number theory
,
probabilities
2600
x1657
896C
Willem, Chtholly and Seniorious
data structures
,
probabilities
2600
x3076
424E
Colored Jenga
dfs and similar
,
dp
,
probabilities
2500
x121
68D
Half-decay tree
data structures
,
divide and conquer
,
dp
,
math
,
probabilities
2500
x441
712E
Memory and Casinos
data structures
,
math
,
probabilities
2500
x590
123E
Maze
dfs and similar
,
dp
,
probabilities
,
trees
2500
x686
1187F
Expected Square Beauty
dp
,
math
,
probabilities
2500
x824
1096E
The Top Scorer
combinatorics
,
dp
,
math
,
probabilities
2500
x850
1840G2
In Search of Truth (Hard Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2500
x872
1737E
Ela Goes Hiking
combinatorics
,
dp
,
math
,
probabilities
2500
x877
1771F
Hossam and Range Minimum Query
binary search
,
bitmasks
,
data structures
,
hashing
,
probabilities
,
strings
,
trees
2500
x931
1556F
Sports Betting
bitmasks
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
2500
x1147
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1367
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