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2023 Post World Finals Online ICPC Challenge powered by Huawei
11 days
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Before contest
Codeforces Round 944 (Div. 4)
14:18:24
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combine-tags-by-or
*combine tags by OR
2-sat
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bitmasks
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combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
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expression parsing
fft
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geometry
graph matchings
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#
Name
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x69
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x80
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x84
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1428H
Rotary Laser Lock
binary search
,
interactive
3500
x88
1071E
Rain Protection
binary search
,
geometry
3500
x90
799G
Cut the pie
binary search
,
data structures
,
geometry
3500
x107
1737G
Ela Takes Dancing Class
binary search
,
data structures
3500
x108
1876F
Indefinite Clownfish
binary search
,
graphs
3500
x110
1305H
Kuroni the Private Tutor
binary search
,
greedy
3500
x110
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x117
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x149
1178H
Stock Exchange
binary search
,
flows
,
graphs
3500
x215
1588F
Jumping Through the Array
binary search
,
data structures
,
graphs
,
two pointers
3500
x268
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x432
1707E
Replace
binary search
,
data structures
3500
x559
1158E
Strange device
binary search
,
interactive
,
math
,
trees
3400
x147
1601F
Two Sorts
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
3400
x167
1466I
The Riddle of the Sphinx
binary search
,
data structures
,
data structures
,
interactive
3400
x180
1098E
Fedya the Potter
binary search
,
implementation
,
math
,
number theory
3400
x212
1515I
Phoenix and Diamonds
binary search
,
data structures
,
sortings
3400
x225
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x274
1827E
Bus Routes
binary search
,
constructive algorithms
,
dfs and similar
,
greedy
,
trees
3400
x362
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x66
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x119
1329E
Dreamoon Loves AA
binary search
,
greedy
3300
x172
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x198
1500E
Subset Trick
binary search
,
data structures
3300
x212
1943E2
MEX Game 2 (Hard Version)
binary search
,
greedy
,
two pointers
3300
x230
607E
Cross Sum
binary search
,
geometry
3300
x248
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x308
1552H
Guess the Perimeter
binary search
,
interactive
,
number theory
3300
x316
713E
Sonya Partymaker
binary search
,
dp
3300
x342
1408H
Rainbow Triples
binary search
,
data structures
,
flows
,
greedy
3300
x352
768G
The Winds of Winter
binary search
,
data structures
3300
x353
1764G3
Doremy's Perfect DS Class (Hard Version)
binary search
,
interactive
3300
x432
576E
Painting Edges
binary search
,
data structures
3300
x1105
1951I
Growing Trees
binary search
,
constructive algorithms
,
flows
,
graphs
,
greedy
3200
x42
1571I
Physical Examination
*special problem
,
binary search
,
data structures
3200
x54
645G
Armistice Area Apportionment
binary search
,
geometry
3200
x111
772E
Verifying Kingdom
binary search
,
divide and conquer
,
interactive
,
trees
3200
x122
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x146
1951H
Thanos Snap
binary search
,
dp
,
games
,
greedy
,
trees
3200
x195
1223G
Wooden Raft
binary search
,
math
,
number theory
3200
x226
1832F
Zombies
binary search
,
dp
3200
x253
1540D
Inverse Inversions
binary search
,
brute force
,
data structures
3200
x262
1482G
Vabank
binary search
,
interactive
3200
x263
1416E
Split
binary search
,
data structures
,
dp
,
greedy
3200
x270
1446F
Line Distance
binary search
,
data structures
,
geometry
3200
x272
1470E
Strange Permutation
binary search
,
combinatorics
,
data structures
,
dp
,
graphs
,
implementation
,
two pointers
3200
x293
1712F
Triameter
binary search
,
data structures
,
dfs and similar
,
trees
3200
x304
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x41
925F
Parametric Circulation
binary search
,
flows
3100
x94
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x116
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x120
1250I
Show Must Go On
binary search
,
brute force
,
greedy
,
shortest paths
3100
x126
1895G
Two Characters, Two Colors
binary search
,
data structures
,
dp
,
flows
,
greedy
3100
x172
1190E
Tokitsukaze and Explosion
binary search
,
greedy
3100
x221
164D
Minimum Diameter
binary search
,
brute force
3100
x229
1887E
Good Colorings
binary search
,
constructive algorithms
,
graphs
,
interactive
3100
x331
1129E
Legendary Tree
binary search
,
interactive
,
trees
3100
x400
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x412
855F
Nagini
binary search
,
data structures
3100
x418
571D
Campus
binary search
,
data structures
,
dsu
,
trees
3100
x648
587D
Duff in Mafia
2-sat
,
binary search
3100
x667
1628E
Groceries in Meteor Town
binary search
,
data structures
,
dsu
,
trees
3100
x829
185E
Soap Time! - 2
binary search
,
data structures
3000
x103
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x252
1572E
Polygon
binary search
,
dp
,
geometry
3000
x279
1838F
Stuck Conveyor
binary search
,
constructive algorithms
,
interactive
3000
x302
1615H
Reindeer Games
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
flows
,
graphs
,
shortest paths
3000
x308
1776M
Parmigiana With Seafood
binary search
,
dp
,
greedy
,
trees
3000
x351
1651F
Tower Defense
binary search
,
brute force
,
data structures
3000
x362
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x366
461E
Appleman and a Game
binary search
,
shortest paths
,
strings
3000
x366
1920F2
Smooth Sailing (Hard Version)
binary search
,
data structures
,
dsu
,
geometry
,
graphs
,
trees
3000
x400
1007C
Guess two numbers
binary search
,
interactive
3000
x406
1558E
Down Below
binary search
,
dfs and similar
,
graphs
,
greedy
,
meet-in-the-middle
,
shortest paths
3000
x434
1535F
String Distance
binary search
,
brute force
,
data structures
,
hashing
,
implementation
,
strings
3000
x438
1764G2
Doremy's Perfect DS Class (Medium Version)
binary search
,
interactive
3000
x497
889E
Mod Mod Mod
binary search
,
dp
,
math
3000
x515
1854D
Michael and Hotel
binary search
,
interactive
,
trees
3000
x522
1442E
Black, White and Grey Tree
binary search
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
3000
x553
1476F
Lanterns
binary search
,
data structures
,
dp
3000
x623
150E
Freezing with Style
binary search
,
data structures
,
divide and conquer
,
trees
3000
x789
504E
Misha and LCP on Tree
binary search
,
dfs and similar
,
hashing
,
string suffix structures
,
trees
3000
x871
1725D
Deducing Sortability
binary search
,
bitmasks
,
math
2900
x117
1901F
Landscaping
binary search
,
geometry
,
two pointers
2900
x143
309E
Sheep
binary search
,
greedy
2900
x217
815E
Karen and Neighborhood
binary search
,
constructive algorithms
,
implementation
2900
x218
1359F
RC Kaboom Show
binary search
,
brute force
,
data structures
,
geometry
,
math
2900
x350
1943E1
MEX Game 2 (Easy Version)
binary search
,
brute force
,
greedy
2900
x360
232D
Fence
binary search
,
data structures
,
string suffix structures
2900
x441
623C
Electric Charges
binary search
,
dp
2900
x448
1870F
Lazy Numbers
binary search
,
math
2900
x463
1764G1
Doremy's Perfect DS Class (Easy Version)
binary search
,
interactive
2900
x548
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x557
685C
Optimal Point
binary search
,
math
2900
x576
802O
April Fools' Problem (hard)
binary search
,
data structures
,
flows
2900
x825
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x965
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