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Before contest
Codeforces Round #792 (Div. 1)
45:43:48
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*has extra registration
Before contest
Codeforces Round #792 (Div. 2)
45:43:48
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→ Filter Problems
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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
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strings
ternary search
trees
two pointers
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Problems
#
Name
1578G
Game of Chance
math
,
probabilities
3500
x20
1571H
Laser Beams
*special problem
,
geometry
,
probabilities
2900
x29
1340E
Nastya and Bees
graphs
,
interactive
,
probabilities
3000
x40
949F
Astronomy
geometry
,
probabilities
3300
x40
1190F
Tokitsukaze and Powers
number theory
,
probabilities
3400
x71
98B
Help King
implementation
,
probabilities
,
trees
2200
x80
1477F
Nezzar and Chocolate Bars
combinatorics
,
fft
,
math
,
probabilities
3500
x85
1479E
School Clubs
dp
,
fft
,
math
,
number theory
,
probabilities
3500
x92
424E
Colored Jenga
dfs and similar
,
dp
,
probabilities
2500
x94
802F
Marmots (hard)
math
,
probabilities
2800
x95
107E
Darts
geometry
,
probabilities
2700
x102
1236F
Alice and the Cactus
dfs and similar
,
graphs
,
math
,
probabilities
3000
x106
913H
Don't Exceed
math
,
probabilities
3400
x106
1210F2
Marek and Matching (hard version)
brute force
,
probabilities
3200
x116
1210F1
Marek and Matching (easy version)
brute force
,
probabilities
3100
x129
1556H
DIY Tree
graphs
,
greedy
,
math
,
probabilities
3300
x134
1526F
Median Queries
constructive algorithms
,
interactive
,
probabilities
3000
x151
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x157
335E
Counting Skyscrapers
dp
,
math
,
probabilities
2800
x159
1148G
Gold Experience
constructive algorithms
,
graphs
,
math
,
number theory
,
probabilities
3300
x174
1081G
Mergesort Strikes Back
math
,
probabilities
3200
x194
293D
Ksusha and Square
geometry
,
math
,
probabilities
,
two pointers
2700
x197
303E
Random Ranking
dp
,
math
,
probabilities
3000
x201
989E
A Trance of Nightfall
dp
,
geometry
,
matrices
,
probabilities
2700
x206
1067D
Computer Game
dp
,
greedy
,
math
,
probabilities
3100
x207
457D
Bingo!
combinatorics
,
math
,
probabilities
2700
x218
1562F
Tubular Bells
interactive
,
math
,
number theory
,
probabilities
2900
x231
277D
Google Code Jam
dp
,
probabilities
2800
x241
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x254
1630E
Expected Components
combinatorics
,
math
,
number theory
,
probabilities
2900
x265
679D
Bear and Chase
brute force
,
dfs and similar
,
graphs
,
implementation
,
math
,
probabilities
2900
x267
446D
DZY Loves Games
math
,
matrices
,
probabilities
2800
x268
1600F
Party Organization
brute force
,
math
,
probabilities
2300
x298
98E
Help Shrek and Donkey
dp
,
games
,
math
,
probabilities
2700
x305
662A
Gambling Nim
bitmasks
,
math
,
matrices
,
probabilities
2400
x306
183D
T-shirt
dp
,
greedy
,
probabilities
2700
x306
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x322
1510I
Is It Rated?
greedy
,
interactive
,
math
,
probabilities
2700
x333
1438F
Olha and Igor
interactive
,
probabilities
,
trees
3000
x344
1267G
Game Relics
math
,
probabilities
3000
x350
1361E
James and the Chase
dfs and similar
,
graphs
,
probabilities
,
trees
3000
x351
717H
Pokermon League challenge
math
,
probabilities
2400
x354
68D
Half-decay tree
data structures
,
divide and conquer
,
dp
,
math
,
probabilities
2500
x357
1578M
The Mind
constructive algorithms
,
interactive
,
probabilities
2700
x362
1392H
ZS Shuffles Cards
combinatorics
,
dp
,
math
,
probabilities
3000
x376
229E
Gifts
combinatorics
,
dp
,
math
,
probabilities
2600
x378
1316F
Battalion Strength
data structures
,
divide and conquer
,
probabilities
2800
x379
248E
Piglet's Birthday
dp
,
math
,
probabilities
2600
x386
623D
Birthday
greedy
,
math
,
probabilities
2700
x394
1286D
LCC
data structures
,
math
,
matrices
,
probabilities
3100
x399
1626F
A Random Code Problem
combinatorics
,
dp
,
math
,
number theory
,
probabilities
2800
x409
441E
Valera and Number
bitmasks
,
dp
,
math
,
probabilities
2400
x417
345A
Expecting Trouble
*special problem
,
probabilities
1500
x418
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x423
1264D2
Beautiful Bracket Sequence (hard version)
combinatorics
,
probabilities
2900
x433
913F
Strongly Connected Tournament
dp
,
graphs
,
math
,
probabilities
2800
x437
643E
Bear and Destroying Subtrees
dp
,
math
,
probabilities
,
trees
2700
x452
123E
Maze
dfs and similar
,
dp
,
probabilities
,
trees
2500
x455
101D
Castle
dp
,
greedy
,
probabilities
,
sortings
,
trees
2300
x466
1045D
Interstellar battle
math
,
probabilities
,
trees
2200
x469
113D
Museum
math
,
matrices
,
probabilities
2700
x473
85C
Petya and Tree
binary search
,
dfs and similar
,
probabilities
,
sortings
,
trees
2200
x485
513G2
Inversions problem
dp
,
probabilities
2400
x489
1198F
GCD Groups 2
greedy
,
number theory
,
probabilities
2900
x496
1349D
Slime and Biscuits
math
,
probabilities
3200
x500
712E
Memory and Casinos
data structures
,
math
,
probabilities
2500
x500
1354G
Find a Gift
binary search
,
interactive
,
probabilities
2600
x511
633E
Startup Funding
binary search
,
constructive algorithms
,
data structures
,
probabilities
,
two pointers
2400
x513
464D
World of Darkraft - 2
dp
,
probabilities
2700
x522
1380G
Circular Dungeon
greedy
,
math
,
probabilities
2600
x525
50D
Bombing
binary search
,
dp
,
probabilities
2100
x528
1061F
Lost Root
interactive
,
probabilities
2400
x536
150C
Smart Cheater
data structures
,
math
,
probabilities
2200
x543
1530F
Bingo
bitmasks
,
combinatorics
,
dp
,
math
,
probabilities
2600
x545
1153F
Serval and Bonus Problem
combinatorics
,
dp
,
math
,
probabilities
2600
x545
1172C2
Nauuo and Pictures (hard version)
dp
,
probabilities
2600
x560
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x570
26D
Tickets
combinatorics
,
math
,
probabilities
2400
x579
494C
Helping People
dp
,
probabilities
2600
x603
1187F
Expected Square Beauty
dp
,
math
,
probabilities
2500
x608
1096E
The Top Scorer
combinatorics
,
dp
,
math
,
probabilities
2500
x609
596D
Wilbur and Trees
dp
,
math
,
probabilities
,
sortings
2300
x617
417E
Square Table
constructive algorithms
,
math
,
probabilities
2400
x655
895E
Eyes Closed
data structures
,
probabilities
2300
x676
1295F
Good Contest
combinatorics
,
dp
,
probabilities
2700
x685
482C
Game with Strings
bitmasks
,
dp
,
probabilities
2600
x699
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x700
28C
Bath Queue
combinatorics
,
dp
,
probabilities
2200
x709
105B
Dark Assembly
brute force
,
probabilities
1800
x733
859D
Third Month Insanity
dp
,
probabilities
,
trees
2100
x752
749E
Inversions After Shuffle
data structures
,
probabilities
2400
x758
138C
Mushroom Gnomes - 2
binary search
,
data structures
,
probabilities
,
sortings
2200
x771
629E
Famil Door and Roads
combinatorics
,
data structures
,
dfs and similar
,
dp
,
probabilities
,
trees
2300
x776
1254D
Tree Queries
data structures
,
probabilities
,
trees
2700
x785
1264D1
Beautiful Bracket Sequence (easy version)
combinatorics
,
dp
,
probabilities
2600
x809
1172C1
Nauuo and Pictures (easy version)
dp
,
probabilities
2300
x812
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x827
398B
Painting The Wall
dp
,
probabilities
x830
641D
Little Artem and Random Variable
dp
,
implementation
,
math
,
probabilities
2400
x837
1364E
X-OR
bitmasks
,
constructive algorithms
,
divide and conquer
,
interactive
,
probabilities
2700
x838
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