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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 935 (Div. 3)
01:46:48
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
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chinese remainder theorem
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data structures
dfs and similar
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Problems
#
Name
1948F
Rare Coins
combinatorics
,
math
,
probabilities
x609
1925D
Good Trip
combinatorics
,
dp
,
math
,
probabilities
1900
x3028
1924E
Paper Cutting Again
combinatorics
,
probabilities
3100
x368
1918E
ace5 and Task Order
constructive algorithms
,
divide and conquer
,
implementation
,
interactive
,
probabilities
,
sortings
2200
x1398
1912F
Fugitive Frenzy
math
,
probabilities
3100
x92
1874D
Jellyfish and Miku
divide and conquer
,
dp
,
math
,
probabilities
2800
x615
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1461
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x656
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2427
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1367
1847E
Triangle Platinum?
brute force
,
combinatorics
,
implementation
,
interactive
,
math
,
probabilities
2900
x309
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x526
1842G
Tenzing and Random Operations
combinatorics
,
dp
,
math
,
probabilities
2800
x814
1840G2
In Search of Truth (Hard Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2500
x872
1840G1
In Search of Truth (Easy Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2200
x2169
1835E
Old Mobile
combinatorics
,
dp
,
probabilities
3500
x193
1835C
Twin Clusters
bitmasks
,
brute force
,
constructive algorithms
,
math
,
probabilities
2600
x913
1826F
Fading into Fog
geometry
,
interactive
,
math
,
probabilities
2800
x332
1824B2
LuoTianyi and the Floating Islands (Hard Version)
combinatorics
,
dfs and similar
,
math
,
probabilities
,
trees
2300
x2434
1824B1
LuoTianyi and the Floating Islands (Easy Version)
combinatorics
,
math
,
probabilities
,
trees
1800
x4233
1823F
Random Walk
dp
,
graphs
,
math
,
probabilities
,
trees
2600
x746
1819E
Roads in E City
interactive
,
math
,
probabilities
,
trees
3200
x233
1788B
Sum of Two Numbers
constructive algorithms
,
greedy
,
implementation
,
math
,
probabilities
1100
x18939
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x285
1778D
Flexible String Revisit
combinatorics
,
dp
,
math
,
probabilities
2100
x2476
1777D
Score of a Tree
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
math
,
probabilities
,
trees
1900
x3134
1773G
Game of Questions
bitmasks
,
combinatorics
,
dp
,
fft
,
math
,
probabilities
2800
x303
1773B
BinCoin
binary search
,
divide and conquer
,
hashing
,
implementation
,
probabilities
,
trees
2200
x710
1773A
Amazing Trick
constructive algorithms
,
graph matchings
,
math
,
probabilities
1900
x1442
1771F
Hossam and Range Minimum Query
binary search
,
bitmasks
,
data structures
,
hashing
,
probabilities
,
strings
,
trees
2500
x931
1770E
Koxia and Tree
combinatorics
,
dfs and similar
,
dp
,
dsu
,
math
,
probabilities
,
trees
2400
x1279
1765G
Guess the String
constructive algorithms
,
interactive
,
probabilities
2600
x355
1765F
Chemistry Lab
dp
,
geometry
,
probabilities
2200
x580
1765C
Card Guessing
combinatorics
,
dp
,
probabilities
2600
x351
1761G
Centroid Guess
interactive
,
probabilities
,
trees
3500
x95
1753C
Wish I Knew How to Sort
dp
,
math
,
probabilities
2000
x4089
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1451
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1387
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7156
1737E
Ela Goes Hiking
combinatorics
,
dp
,
math
,
probabilities
2500
x877
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6620
1726D
Edge Split
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
probabilities
,
trees
2000
x3499
1713D
Tournament Countdown
constructive algorithms
,
greedy
,
interactive
,
number theory
,
probabilities
1800
x5379
1705F
Mark and the Online Exam
bitmasks
,
constructive algorithms
,
interactive
,
probabilities
2900
x561
1630E
Expected Components
combinatorics
,
math
,
number theory
,
probabilities
2900
x412
1626F
A Random Code Problem
combinatorics
,
dp
,
math
,
number theory
,
probabilities
2800
x691
1623D
Robot Cleaner Revisit
implementation
,
math
,
probabilities
2300
x1339
1612E
Messages
brute force
,
dp
,
greedy
,
probabilities
,
sortings
2000
x2357
1600F
Party Organization
brute force
,
math
,
probabilities
2300
x426
1599C
Bubble Strike
combinatorics
,
math
,
probabilities
,
ternary search
2000
x1536
1578M
The Mind
constructive algorithms
,
interactive
,
probabilities
2700
x429
1578G
Game of Chance
math
,
probabilities
3500
x31
1571H
Laser Beams
*special problem
,
geometry
,
probabilities
2900
x43
1562F
Tubular Bells
interactive
,
math
,
number theory
,
probabilities
2900
x371
1556H
DIY Tree
graphs
,
greedy
,
math
,
probabilities
3300
x314
1556F
Sports Betting
bitmasks
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
2500
x1147
1543C
Need for Pink Slips
bitmasks
,
brute force
,
dfs and similar
,
implementation
,
math
,
probabilities
1900
x5151
1540B
Tree Array
brute force
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
,
trees
2300
x2465
1530F
Bingo
bitmasks
,
combinatorics
,
dp
,
math
,
probabilities
2600
x720
1526F
Median Queries
constructive algorithms
,
interactive
,
probabilities
3000
x246
1525E
Assimilation IV
combinatorics
,
dp
,
math
,
probabilities
,
two pointers
2100
x1915
1523E
Crypto Lights
combinatorics
,
dp
,
math
,
probabilities
2600
x1510
1523D
Love-Hate
bitmasks
,
brute force
,
dp
,
probabilities
2400
x2059
1510I
Is It Rated?
greedy
,
interactive
,
math
,
probabilities
2700
x439
1479E
School Clubs
dp
,
fft
,
math
,
number theory
,
probabilities
3500
x171
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x925
1477F
Nezzar and Chocolate Bars
combinatorics
,
fft
,
math
,
probabilities
3500
x115
1461C
Random Events
dp
,
math
,
probabilities
1500
x10768
1459A
Red-Blue Shuffle
math
,
probabilities
800
x16687
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x38620
1453D
Checkpoints
brute force
,
constructive algorithms
,
greedy
,
math
,
probabilities
1900
x4054
1438F
Olha and Igor
interactive
,
probabilities
,
trees
3000
x601
1418E
Expected Damage
binary search
,
combinatorics
,
probabilities
2400
x1697
1392H
ZS Shuffles Cards
combinatorics
,
dp
,
math
,
probabilities
3000
x648
1380G
Circular Dungeon
greedy
,
math
,
probabilities
2600
x757
1364E
X-OR
bitmasks
,
constructive algorithms
,
divide and conquer
,
interactive
,
probabilities
2700
x1051
1361E
James and the Chase
dfs and similar
,
graphs
,
probabilities
,
trees
3000
x607
1354G
Find a Gift
binary search
,
interactive
,
probabilities
2600
x709
1349D
Slime and Biscuits
math
,
probabilities
3200
x761
1340E
Nastya and Bees
graphs
,
interactive
,
probabilities
3000
x50
1316F
Battalion Strength
data structures
,
divide and conquer
,
probabilities
2800
x501
1310D
Tourism
dp
,
graphs
,
probabilities
2300
x1270
1305F
Kuroni and the Punishment
math
,
number theory
,
probabilities
2500
x2290
1295F
Good Contest
combinatorics
,
dp
,
probabilities
2700
x947
1286D
LCC
data structures
,
math
,
matrices
,
probabilities
3100
x541
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x5791
1278F
Cards
combinatorics
,
dp
,
math
,
number theory
,
probabilities
2600
x1653
1267G
Game Relics
math
,
probabilities
3000
x612
1265E
Beautiful Mirrors
data structures
,
dp
,
math
,
probabilities
2100
x3220
1264D2
Beautiful Bracket Sequence (hard version)
combinatorics
,
probabilities
2900
x829
1264D1
Beautiful Bracket Sequence (easy version)
combinatorics
,
dp
,
probabilities
2600
x1157
1264C
Beautiful Mirrors with queries
data structures
,
probabilities
2400
x1116
1254D
Tree Queries
data structures
,
probabilities
,
trees
2700
x1103
1245E
Hyakugoku and Ladders
dp
,
probabilities
,
shortest paths
2300
x1083
1236F
Alice and the Cactus
dfs and similar
,
graphs
,
math
,
probabilities
3000
x160
1210F2
Marek and Matching (hard version)
brute force
,
probabilities
3200
x185
1210F1
Marek and Matching (easy version)
brute force
,
probabilities
3100
x184
1198F
GCD Groups 2
greedy
,
number theory
,
probabilities
2900
x801
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x948
1190F
Tokitsukaze and Powers
number theory
,
probabilities
3400
x86
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