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Codeforces Round 940 (Div. 2)
3 days
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Difficulty:
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sortings
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
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x10901
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10143
785B
Anton and Classes
greedy
,
sortings
1100
x10122
155B
Combination
greedy
,
sortings
1100
x9989
792A
New Bus Route
implementation
,
sortings
1100
x8708
735B
Urbanization
greedy
,
number theory
,
sortings
1100
x8295
12B
Correct Solution?
implementation
,
sortings
1100
x7882
624B
Making a String
greedy
,
sortings
1100
x7836
686B
Little Robber Girl's Zoo
constructive algorithms
,
implementation
,
sortings
1100
x7691
845A
Chess Tourney
implementation
,
sortings
1100
x7619
1121A
Technogoblet of Fire
implementation
,
sortings
1100
x7082
381B
Sereja and Stairs
greedy
,
implementation
,
sortings
1100
x6564
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6371
12C
Fruits
greedy
,
implementation
,
sortings
1100
x5681
1575A
Another Sorting Problem
data structures
,
sortings
,
strings
1100
x4185
159B
Matchmaker
*special problem
,
greedy
,
sortings
1100
x3664
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70696
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46159
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36015
977C
Less or Equal
sortings
1200
x32049
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x25947
1339B
Sorted Adjacent Differences
constructive algorithms
,
sortings
1200
x25480
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x24801
1857C
Assembly via Minimums
greedy
,
sortings
1200
x22531
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22399
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x21984
1294B
Collecting Packages
implementation
,
sortings
1200
x21156
1133C
Balanced Team
sortings
,
two pointers
1200
x21155
1539C
Stable Groups
greedy
,
sortings
1200
x21087
1744D
Divisibility by 2^n
greedy
,
math
,
sortings
1200
x20095
27A
Next Test
implementation
,
sortings
1200
x19222
1922B
Forming Triangles
combinatorics
,
constructive algorithms
,
math
,
sortings
1200
x18758
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x18650
1311B
WeirdSort
dfs and similar
,
sortings
1200
x18412
1656C
Make Equal With Mod
constructive algorithms
,
math
,
number theory
,
sortings
1200
x18408
1790D
Matryoshkas
data structures
,
greedy
,
sortings
1200
x17970
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x17803
1914D
Three Activities
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x17784
1641A
Great Sequence
brute force
,
greedy
,
sortings
1200
x17439
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x17330
546B
Soldier and Badges
brute force
,
greedy
,
implementation
,
sortings
1200
x17140
1681C
Double Sort
implementation
,
sortings
1200
x16899
1495A
Diamond Miner
geometry
,
greedy
,
math
,
sortings
1200
x16626
1650C
Weight of the System of Nested Segments
greedy
,
hashing
,
implementation
,
sortings
1200
x16313
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x15985
1674D
A-B-C Sort
constructive algorithms
,
implementation
,
sortings
1200
x15706
1592B
Hemose Shopping
constructive algorithms
,
dsu
,
math
,
sortings
1200
x15539
1257C
Dominated Subarray
greedy
,
implementation
,
sortings
,
strings
,
two pointers
1200
x15526
461A
Appleman and Toastman
greedy
,
sortings
1200
x15135
1174B
Ehab Is an Odd Person
sortings
1200
x15067
1928B
Equalize
binary search
,
greedy
,
sortings
,
two pointers
1200
x14930
637B
Chat Order
*special problem
,
binary search
,
constructive algorithms
,
data structures
,
sortings
1200
x14921
1738B
Prefix Sum Addicts
constructive algorithms
,
greedy
,
math
,
sortings
1200
x14688
1808B
Playing in a Casino
math
,
sortings
1200
x14464
1826A
Trust Nobody
brute force
,
greedy
,
implementation
,
sortings
1200
x14431
1131C
Birthday
binary search
,
greedy
,
sortings
1200
x14360
1704C
Virus
greedy
,
implementation
,
sortings
1200
x14270
1530C
Pursuit
binary search
,
brute force
,
greedy
,
sortings
1200
x14205
439B
Devu, the Dumb Guy
implementation
,
sortings
1200
x13996
714B
Filya and Homework
implementation
,
sortings
1200
x13969
1763B
Incinerate
binary search
,
brute force
,
data structures
,
implementation
,
math
,
sortings
1200
x13826
1848B
Vika and the Bridge
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1200
x13211
1517B
Morning Jogging
constructive algorithms
,
greedy
,
sortings
1200
x13041
1006B
Polycarp's Practice
greedy
,
implementation
,
sortings
1200
x12750
998B
Cutting
dp
,
greedy
,
sortings
1200
x12718
779C
Dishonest Sellers
constructive algorithms
,
greedy
,
sortings
1200
x11603
651B
Beautiful Paintings
greedy
,
sortings
1200
x11365
682B
Alyona and Mex
sortings
1200
x11072
1185C1
Exam in BerSU (easy version)
greedy
,
sortings
1200
x11045
489A
SwapSort
greedy
,
implementation
,
sortings
1200
x9789
940A
Points on the line
brute force
,
greedy
,
sortings
1200
x8121
990B
Micro-World
greedy
,
sortings
1200
x7972
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x7318
254A
Cards with Numbers
constructive algorithms
,
sortings
1200
x6817
811B
Vladik and Complicated Book
implementation
,
sortings
1200
x6424
186B
Growing Mushrooms
greedy
,
sortings
1200
x5271
1075B
Taxi drivers and Lyft
implementation
,
sortings
1200
x4183
717C
Potions Homework
implementation
,
sortings
1200
x3860
15A
Cottage Village
implementation
,
sortings
1200
x3547
802M
April Fools' Problem (easy)
greedy
,
sortings
1200
x3009
176A
Trading Business
greedy
,
sortings
1200
x1400
451B
Sort the Array
implementation
,
sortings
1300
x42781
459B
Pashmak and Flowers
combinatorics
,
implementation
,
sortings
1300
x38281
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x27192
545D
Queue
greedy
,
implementation
,
sortings
1300
x23872
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23349
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x21132
1703F
Yet Another Problem About Pairs Satisfying an Inequality
binary search
,
data structures
,
dp
,
greedy
,
sortings
1300
x17959
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17505
1574C
Slay the Dragon
binary search
,
greedy
,
sortings
,
ternary search
1300
x16448
1607D
Blue-Red Permutation
greedy
,
math
,
sortings
1300
x16337
1418B
Negative Prefixes
greedy
,
sortings
1300
x16249
1627B
Not Sitting
games
,
greedy
,
sortings
1300
x16227
352B
Jeff and Periods
implementation
,
sortings
1300
x15734
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x15693
1443B
Saving the City
dp
,
greedy
,
math
,
sortings
1300
x15449
1733C
Parity Shuffle Sorting
constructive algorithms
,
sortings
1300
x15006
1446A
Knapsack
constructive algorithms
,
greedy
,
sortings
1300
x14853
1237B
Balanced Tunnel
data structures
,
sortings
,
two pointers
1300
x14578
1617C
Paprika and Permutation
binary search
,
greedy
,
math
,
sortings
1300
x14412
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