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Codeforces Round 941 (Div. 1)
4 days
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Codeforces Round 941 (Div. 2)
4 days
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2-sat
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bitmasks
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dsu
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fft
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Name
1725C
Circular Mirror
binary search
,
combinatorics
,
geometry
,
math
,
two pointers
2000
x1532
1725B
Basketball Together
binary search
,
greedy
,
sortings
1000
x11538
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x12937
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12828
1714G
Path Prefixes
binary search
,
data structures
,
dfs and similar
,
trees
1700
x7071
1712F
Triameter
binary search
,
data structures
,
dfs and similar
,
trees
3200
x302
1712E1
LCM Sum (easy version)
binary search
,
brute force
,
combinatorics
,
math
,
number theory
,
two pointers
2300
x2033
1712D
Empty Graph
binary search
,
constructive algorithms
,
data structures
,
greedy
,
shortest paths
2000
x4247
1710E
Two Arrays
binary search
,
games
,
graph matchings
2400
x461
1710B
Rain
binary search
,
brute force
,
data structures
,
geometry
,
greedy
,
implementation
,
math
2100
x2346
1709D
Rorororobot
binary search
,
data structures
,
greedy
,
math
1700
x8046
1707E
Replace
binary search
,
data structures
3500
x556
1707A
Doremy's IQ
binary search
,
constructive algorithms
,
greedy
,
implementation
1600
x12789
1706E
Qpwoeirut and Vertices
binary search
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
trees
2300
x2346
1706D1
Chopping Carrots (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
number theory
1700
x6645
1705E
Mark and Professor Koro
binary search
,
bitmasks
,
brute force
,
combinatorics
,
data structures
,
greedy
2300
x1975
1703F
Yet Another Problem About Pairs Satisfying an Inequality
binary search
,
data structures
,
dp
,
greedy
,
sortings
1300
x18017
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5463
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x15645
1700D
River Locks
binary search
,
dp
,
greedy
,
math
1900
x5814
1698D
Fixed Point Guessing
binary search
,
constructive algorithms
,
interactive
1600
x8630
1697D
Guess The String
binary search
,
constructive algorithms
,
interactive
1900
x4249
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x13908
1696D
Permutation Graph
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
shortest paths
1900
x5155
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x274
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x19781
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5449
1690G
Count the Trains
binary search
,
data structures
,
greedy
,
sortings
2000
x3214
1690E
Price Maximization
binary search
,
greedy
,
math
,
two pointers
1500
x14433
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x555
1687C
Sanae and Giant Robot
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2500
x1335
1684E
MEX vs DIFF
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2100
x3029
1680C
Binary String
binary search
,
greedy
,
strings
,
two pointers
1600
x9452
1679D
Toss a Coin to Your Graph...
binary search
,
dfs and similar
,
dp
,
graphs
1900
x4551
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x24469
1674E
Breaking the Wall
binary search
,
brute force
,
constructive algorithms
,
greedy
,
math
2000
x6136
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x2089
1671C
Dolce Vita
binary search
,
brute force
,
greedy
,
math
1200
x15828
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4938
1669F
Eating Candies
binary search
,
data structures
,
greedy
,
two pointers
1100
x22856
1666E
Even Split
binary search
,
constructive algorithms
,
greedy
,
math
2500
x674
1665C
Tree Infection
binary search
,
greedy
,
sortings
,
trees
1600
x8019
1661F
Teleporters
binary search
,
greedy
2600
x549
1661C
Water the Trees
binary search
,
greedy
,
math
1700
x8936
1659C
Line Empire
binary search
,
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9600
1657D
For Gamers. By Gamers.
binary search
,
brute force
,
greedy
,
math
,
sortings
2000
x4693
1656F
Parametric MST
binary search
,
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
2600
x983
1651F
Tower Defense
binary search
,
brute force
,
data structures
3000
x361
1651D
Nearest Excluded Points
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
1900
x4795
1650E
Rescheduling the Exam
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1900
x3998
1641C
Anonymity Is Important
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2200
x2307
1637E
Best Pair
binary search
,
brute force
,
implementation
2100
x3175
1633E
Spanning Tree Queries
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1454
1632E2
Distance Tree (hard version)
binary search
,
dfs and similar
,
shortest paths
,
trees
2700
x924
1632E1
Distance Tree (easy version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
trees
2400
x1106
1632D
New Year Concert
binary search
,
data structures
,
greedy
,
math
,
number theory
,
two pointers
2000
x4451
1632C
Strange Test
binary search
,
bitmasks
,
brute force
,
dp
,
math
1600
x12216
1630B
Range and Partition
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x5487
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x84
1628E
Groceries in Meteor Town
binary search
,
data structures
,
dsu
,
trees
3100
x821
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x15164
1626D
Martial Arts Tournament
binary search
,
brute force
,
greedy
,
math
2100
x3779
1626C
Monsters And Spells
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1700
x10583
1625E2
Cats on the Upgrade (hard version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
trees
2800
x576
1624F
Interacdive Problem
binary search
,
constructive algorithms
,
interactive
2000
x3163
1624D
Palindromes Coloring
binary search
,
greedy
,
sortings
,
strings
1400
x16180
1623C
Balanced Stone Heaps
binary search
,
greedy
1600
x11241
1622C
Set or Decrease
binary search
,
brute force
,
greedy
,
sortings
1600
x12282
1621E
New School
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
2300
x1710
1619G
Unusual Minesweeper
binary search
,
dfs and similar
,
dsu
,
greedy
,
sortings
2000
x2258
1619D
New Year's Problem
binary search
,
greedy
,
sortings
1800
x7219
1617C
Paprika and Permutation
binary search
,
greedy
,
math
,
sortings
1300
x14424
1615H
Reindeer Games
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
flows
,
graphs
,
shortest paths
3000
x307
1614E
Divan and a Cottage
binary search
,
data structures
2600
x807
1613C
Poisoned Dagger
binary search
1200
x22434
1612C
Chat Ban
binary search
,
math
1300
x15704
1611F
ATM and Students
binary search
,
data structures
,
two pointers
1800
x6156
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x28352
1610E
AmShZ and G.O.A.T.
binary search
,
brute force
,
greedy
,
implementation
,
math
2300
x1622
1610C
Keshi Is Throwing a Party
binary search
,
greedy
1600
x10623
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9459
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x147
1608E
The Cells on the Paper
binary search
,
implementation
,
sortings
2800
x423
1605E
Array Equalizer
binary search
,
greedy
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2400
x995
1601F
Two Sorts
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
3400
x167
1598F
RBS
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
2400
x1319
1593C
Save More Mice
binary search
,
greedy
,
greedy
1000
x23822
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x2155
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x21547
1588F
Jumping Through the Array
binary search
,
data structures
,
graphs
,
two pointers
3500
x266
1584E
Game with Stones
binary search
,
data structures
,
games
,
greedy
2300
x1215
1584D
Guess the Permutation
binary search
,
combinatorics
,
interactive
,
math
2000
x3509
1582F2
Korney Korneevich and XOR (hard version)
binary search
,
brute force
,
dp
,
greedy
,
two pointers
2400
x1709
1582E
Pchelyonok and Segments
binary search
,
data structures
,
dp
,
greedy
,
math
2000
x3575
1578L
Labyrinth
binary search
,
dsu
,
greedy
2400
x1046
1575J
Jeopardy of Dropped Balls
binary search
,
brute force
,
dsu
,
implementation
1500
x3632
1575B
Building an Amusement Park
binary search
,
geometry
2300
x449
1574D
The Strongest Build
binary search
,
brute force
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
hashing
,
implementation
2000
x4329
1574C
Slay the Dragon
binary search
,
greedy
,
sortings
,
ternary search
1300
x16460
1572E
Polygon
binary search
,
dp
,
geometry
3000
x277
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