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Before contest
Codeforces Round #792 (Div. 1)
3 days
Before contest
Codeforces Round #792 (Div. 2)
3 days
→ Filter Problems
Difficulty:
—
dfs and similar
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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Problems
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Status
Standings
Custom test
Problems
#
Name
1549B
Gregor and the Pawn Game
dfs and similar
,
dp
,
flows
,
graph matchings
,
graphs
,
greedy
,
implementation
800
x19737
1598A
Computer Game
brute force
,
dfs and similar
,
dp
,
implementation
800
x18219
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x9025
115A
Party
dfs and similar
,
graphs
,
trees
900
x24419
1593B
Make it Divisible by 25
dfs and similar
,
dp
,
greedy
,
math
,
math
900
x18701
948A
Protect Sheep
brute force
,
dfs and similar
,
graphs
,
implementation
900
x10797
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x4381
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x36581
1020B
Badge
brute force
,
dfs and similar
,
graphs
1000
x15883
1033A
King Escape
dfs and similar
,
graphs
,
implementation
1000
x10109
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x10006
1324C
Frog Jumps
binary search
,
data structures
,
dfs and similar
,
greedy
,
implementation
1100
x21671
1623B
Game on Ranges
brute force
,
dfs and similar
,
implementation
,
sortings
1100
x12052
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x33436
445A
DZY Loves Chessboard
dfs and similar
,
implementation
1200
x20392
1433D
Districts Connection
constructive algorithms
,
dfs and similar
1200
x17490
1311B
WeirdSort
dfs and similar
,
sortings
1200
x16224
217A
Ice Skating
brute force
,
dfs and similar
,
dsu
,
graphs
1200
x16113
1490D
Permutation Transformation
dfs and similar
,
divide and conquer
,
implementation
1200
x15412
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x12453
1669G
Fall Down
dfs and similar
,
implementation
1200
x10133
129B
Students and Shoelaces
brute force
,
dfs and similar
,
graphs
,
implementation
1200
x9271
902B
Coloring a Tree
dfs and similar
,
dsu
,
greedy
1200
x8659
893C
Rumor
dfs and similar
,
graphs
,
greedy
1300
x14972
1249B2
Books Exchange (hard version)
dfs and similar
,
dsu
,
math
1300
x13472
862B
Mahmoud and Ehab and the bipartiteness
dfs and similar
,
graphs
,
trees
1300
x11371
1661B
Getting Zero
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1300
x10978
1182B
Plus from Picture
dfs and similar
,
implementation
,
strings
1300
x9689
755C
PolandBall and Forest
dfs and similar
,
dsu
,
graphs
,
interactive
,
trees
1300
x8836
429A
Xor-tree
dfs and similar
,
trees
1300
x8130
1152B
Neko Performs Cat Furrier Transform
bitmasks
,
constructive algorithms
,
dfs and similar
,
math
1300
x7851
932B
Recursive Queries
binary search
,
data structures
,
dfs and similar
1300
x6823
1676G
White-Black Balanced Subtrees
dfs and similar
,
dp
,
graphs
,
trees
1300
x6060
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x4497
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x4020
57A
Square Earth?
dfs and similar
,
greedy
,
implementation
1300
x2453
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x33237
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x13911
277A
Learning Languages
dfs and similar
,
dsu
1400
x13897
977D
Divide by three, multiply by two
dfs and similar
,
math
,
sortings
1400
x13683
1167C
News Distribution
dfs and similar
,
dsu
,
graphs
1400
x12311
1517C
Fillomino 2
constructive algorithms
,
dfs and similar
,
greedy
,
implementation
1400
x10754
1627C
Not Assigning
constructive algorithms
,
dfs and similar
,
number theory
,
trees
1400
x10210
505B
Mr. Kitayuta's Colorful Graph
dfs and similar
,
dp
,
dsu
,
graphs
1400
x9468
445B
DZY Loves Chemistry
dfs and similar
,
dsu
,
greedy
1400
x9318
1143C
Queen
dfs and similar
,
trees
1400
x8706
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x7681
1130C
Connect
brute force
,
dfs and similar
,
dsu
1400
x7132
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x7041
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x5357
843A
Sorting by Subsequences
dfs and similar
,
dsu
,
implementation
,
math
,
sortings
1400
x5009
526B
Om Nom and Dark Park
dfs and similar
,
greedy
,
implementation
1400
x4254
107A
Dorm Water Supply
dfs and similar
,
graphs
1400
x3948
60B
Serial Time!
dfs and similar
,
dsu
1400
x3556
802J
Send the Fool Further! (easy)
dfs and similar
,
graphs
,
trees
1400
x2822
1600J
Robot Factory
bitmasks
,
dfs and similar
1400
x2684
580C
Kefa and Park
dfs and similar
,
graphs
,
trees
1500
x26996
1332C
K-Complete Word
dfs and similar
,
dsu
,
greedy
,
implementation
,
strings
1500
x13381
977E
Cyclic Components
dfs and similar
,
dsu
,
graphs
1500
x13187
1352F
Binary String Reconstruction
constructive algorithms
,
dfs and similar
,
math
1500
x12503
839C
Journey
dfs and similar
,
dp
,
graphs
,
probabilities
,
trees
1500
x12176
771A
Bear and Friendship Condition
dfs and similar
,
dsu
,
graphs
1500
x11400
1325C
Ehab and Path-etic MEXs
constructive algorithms
,
dfs and similar
,
greedy
,
trees
1500
x11310
687A
NP-Hard Problem
dfs and similar
,
graphs
1500
x11012
1106D
Lunar New Year and a Wander
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1500
x10979
510B
Fox And Two Dots
dfs and similar
1500
x10922
1487C
Minimum Ties
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
1500
x10809
1263D
Secret Passwords
dfs and similar
,
dsu
,
graphs
1500
x10324
441C
Valera and Tubes
constructive algorithms
,
dfs and similar
,
implementation
1500
x9459
1139C
Edgy Trees
dfs and similar
,
dsu
,
graphs
,
math
,
trees
1500
x9359
982C
Cut 'em all!
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1500
x8594
103B
Cthulhu
dfs and similar
,
dsu
,
graphs
1500
x6813
574B
Bear and Three Musketeers
brute force
,
dfs and similar
,
graphs
,
hashing
1500
x6806
744A
Hongcow Builds A Nation
dfs and similar
,
graphs
1500
x6650
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x5968
930A
Peculiar apple-tree
dfs and similar
,
graphs
,
trees
1500
x5787
300B
Coach
brute force
,
dfs and similar
,
graphs
1500
x5069
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x4806
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x4428
884C
Bertown Subway
dfs and similar
,
greedy
,
math
1500
x4025
17B
Hierarchy
dfs and similar
,
dsu
,
greedy
,
shortest paths
1500
x3210
128A
Statues
dfs and similar
1500
x2747
690C2
Brain Network (medium)
dfs and similar
,
graphs
,
trees
1500
x2597
770C
Online Courses In BSU
*special problem
,
dfs and similar
,
graphs
,
implementation
1500
x2221
190C
STL
dfs and similar
1500
x2169
177C2
Party
brute force
,
dfs and similar
,
dsu
,
graphs
1500
x1915
177C1
Party
dfs and similar
,
dsu
,
graphs
1500
x1902
638B
Making Genome in Berland
*special problem
,
dfs and similar
,
strings
1500
x1681
212E
IT Restaurants
dfs and similar
,
dp
,
trees
1500
x1296
316B1
EKG
brute force
,
dfs and similar
1500
x1273
377A
Maze
dfs and similar
1600
x15902
1336A
Linova and Kingdom
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1600
x15359
510C
Fox And Names
dfs and similar
,
graphs
,
sortings
1600
x11233
1528A
Parsa's Humongous Tree
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
trees
1600
x10365
1303C
Perfect Keyboard
dfs and similar
,
greedy
,
implementation
1600
x10058
763A
Timofey and a tree
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
trees
1600
x8413
1593E
Gardener and Tree
brute force
,
data structures
,
dfs and similar
,
greedy
,
implementation
,
trees
1600
x7803
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x7749
500B
New Year Permutation
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
1600
x7733
780C
Andryusha and Colored Balloons
dfs and similar
,
graphs
,
greedy
,
trees
1600
x7702
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