Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 950 (Div. 3)
30:02:51
Register now »
→ 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
Add tag
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
571C
CNF 2
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x612
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x6729
567E
President and Roads
dfs and similar
,
graphs
,
hashing
,
shortest paths
2200
x1664
566C
Logistical Questions
dfs and similar
,
divide and conquer
,
trees
3000
x697
566A
Matching Names
dfs and similar
,
strings
,
trees
2300
x872
557D
Vitaly and Cycle
combinatorics
,
dfs and similar
,
graphs
,
math
2000
x2143
555E
Case of Computer Network
dfs and similar
,
graphs
,
trees
2800
x2199
553C
Love Triangles
dfs and similar
,
dsu
,
graphs
2200
x1739
549B
Looksery Party
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2300
x1479
547D
Mike and Fish
constructive algorithms
,
dfs and similar
,
graphs
2600
x2437
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17120
542D
Superhero's Job
dfs and similar
,
dp
,
hashing
,
math
,
number theory
2600
x499
540C
Ice Cave
dfs and similar
2000
x7055
538H
Summer Dichotomy
2-sat
,
data structures
,
dfs and similar
,
greedy
3200
x630
538E
Demiurges Play Again
dfs and similar
,
dp
,
math
,
trees
2200
x1502
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2309
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x375
527E
Data Center Drama
dfs and similar
,
graphs
2600
x1816
526B
Om Nom and Dark Park
dfs and similar
,
greedy
,
implementation
1400
x4473
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x15778
521E
Cycling City
dfs and similar
,
graphs
3100
x921
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x48369
519E
A and B and Lecture Rooms
binary search
,
data structures
,
dfs and similar
,
dp
,
trees
2100
x6277
516D
Drazil and Morning Exercise
dfs and similar
,
dp
,
dsu
,
trees
,
two pointers
2800
x1230
513G1
Inversions problem
brute force
,
dfs and similar
,
dp
,
meet-in-the-middle
1800
x1757
513D1
Constrained Tree
dfs and similar
2400
x427
510C
Fox And Names
dfs and similar
,
graphs
,
sortings
1600
x15256
510B
Fox And Two Dots
dfs and similar
1500
x13489
508D
Tanya and Password
dfs and similar
,
graphs
2500
x3113
507E
Breaking Good
dfs and similar
,
dp
,
graphs
,
shortest paths
2100
x2647
506D
Mr. Kitayuta's Colorful Graph
brute force
,
dfs and similar
,
dsu
,
graphs
2400
x2033
505D
Mr. Kitayuta's Technology
dfs and similar
2200
x2432
505C
Mr. Kitayuta, the Treasure Hunter
dfs and similar
,
dp
,
two pointers
1900
x6110
505B
Mr. Kitayuta's Colorful Graph
dfs and similar
,
dp
,
dsu
,
graphs
1400
x12129
504E
Misha and LCP on Tree
binary search
,
dfs and similar
,
hashing
,
string suffix structures
,
trees
3000
x876
500D
New Year Santa Network
combinatorics
,
dfs and similar
,
graphs
,
trees
1900
x3072
500B
New Year Permutation
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
1600
x8731
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x50630
494D
Birthday
data structures
,
dfs and similar
,
dp
,
trees
2700
x515
490F
Treeland Tour
data structures
,
dfs and similar
,
dp
,
trees
2200
x1565
490D
Chocolate
brute force
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
1900
x2072
489D
Unbearable Controversy of Being
brute force
,
combinatorics
,
dfs and similar
,
graphs
1700
x6555
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46894
487E
Tourists
data structures
,
dfs and similar
,
graphs
,
trees
3200
x2155
486D
Valid Sets
dfs and similar
,
dp
,
math
,
trees
2100
x3863
478E
Wavy numbers
brute force
,
dfs and similar
,
meet-in-the-middle
,
sortings
2900
x207
475E
Strongly Connected City 2
dfs and similar
2700
x405
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8271
472D
Design Tutorial: Inverse the Problem
dfs and similar
,
dsu
,
shortest paths
,
trees
1900
x5069
468B
Two Sets
2-sat
,
dfs and similar
,
dsu
,
graph matchings
,
greedy
2000
x3965
467D
Fedor and Essay
dfs and similar
,
dp
,
graphs
,
hashing
,
strings
2400
x1772
466E
Information Graph
dfs and similar
,
dsu
,
graphs
,
trees
2100
x2076
463E
Caisa and Tree
brute force
,
dfs and similar
,
math
,
number theory
,
trees
2100
x1431
463D
Gargari and Permutations
dfs and similar
,
dp
,
graphs
,
implementation
1900
x5982
461B
Appleman and Tree
dfs and similar
,
dp
,
trees
2000
x5356
455C
Civilization
dfs and similar
,
dp
,
dsu
,
ternary search
,
trees
2100
x5240
455B
A Lot of Games
dfs and similar
,
dp
,
games
,
implementation
,
strings
,
trees
1900
x5710
453C
Little Pony and Summer Sun Celebration
constructive algorithms
,
dfs and similar
,
graphs
2200
x1572
448E
Divisors
brute force
,
dfs and similar
,
implementation
,
number theory
2200
x1450
445B
DZY Loves Chemistry
dfs and similar
,
dsu
,
greedy
1400
x12168
445A
DZY Loves Chessboard
dfs and similar
,
implementation
1200
x28412
441C
Valera and Tubes
constructive algorithms
,
dfs and similar
,
implementation
1500
x10880
440C
One-Based Arithmetic
brute force
,
dfs and similar
,
divide and conquer
1800
x894
429A
Xor-tree
dfs and similar
,
trees
1300
x10032
427C
Checkposts
dfs and similar
,
graphs
,
two pointers
1700
x13077
424E
Colored Jenga
dfs and similar
,
dp
,
probabilities
2500
x129
412D
Giving Awards
dfs and similar
2000
x1818
406D
Hill Climbing
dfs and similar
,
geometry
,
trees
2200
x1131
405E
Graph Cutting
dfs and similar
,
graphs
2300
x1340
404C
Restore Graph
dfs and similar
,
graphs
,
sortings
1800
x5041
383C
Propagating tree
data structures
,
dfs and similar
,
trees
2000
x6154
382D
Ksenia and Pawns
dfs and similar
,
graphs
,
implementation
,
trees
2200
x656
377A
Maze
dfs and similar
1600
x21510
375D
Tree and Queries
data structures
,
dfs and similar
,
trees
2400
x6273
374C
Inna and Dima
dfs and similar
,
dp
,
graphs
,
implementation
1900
x2667
372D
Choosing Subtree is Fun
binary search
,
data structures
,
dfs and similar
,
trees
,
two pointers
2600
x915
369D
Valera and Fools
dfs and similar
,
dp
,
graphs
,
shortest paths
2200
x1097
369C
Valera and Elections
dfs and similar
,
graphs
,
trees
1600
x9505
367D
Sereja and Sets
bitmasks
,
dfs and similar
2400
x618
366D
Dima and Trap Graph
binary search
,
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
two pointers
2000
x1271
362D
Fools and Foolproof Roads
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
2100
x897
359E
Neatness
constructive algorithms
,
dfs and similar
2400
x461
354E
Lucky Number Representation
constructive algorithms
,
dfs and similar
,
dp
2200
x873
350E
Wrong Floyd
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
2200
x751
348E
Pilgrims
dfs and similar
,
dp
,
trees
2800
x427
348B
Apple Tree
dfs and similar
,
number theory
,
trees
2100
x2048
345D
Chain Letter
*special problem
,
dfs and similar
,
graphs
2200
x77
343E
Pumping Stations
brute force
,
dfs and similar
,
divide and conquer
,
flows
,
graphs
,
greedy
,
trees
2900
x691
343D
Water Tree
data structures
,
dfs and similar
,
graphs
,
trees
2100
x5515
342D
Xenia and Dominoes
bitmasks
,
dfs and similar
,
dp
2100
x489
339E
Three Swaps
constructive algorithms
,
dfs and similar
,
greedy
2700
x539
339C
Xenia and Weights
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x8164
337D
Book of Evil
dfs and similar
,
divide and conquer
,
dp
,
trees
2000
x5853
331D1
Escaping on Beaveractor
dfs and similar
,
implementation
2400
x200
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x6150
327D
Block Tower
constructive algorithms
,
dfs and similar
,
graphs
1900
x2226
325E
The Red Button
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
greedy
2800
x755
325C
Monsters and Diamonds
dfs and similar
,
graphs
,
shortest paths
2600
x333
321C
Ciel the Commander
constructive algorithms
,
dfs and similar
,
divide and conquer
,
greedy
,
trees
2100
x6853
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7107
←
1
2
...
6
7
8
9
10
→
User lists
Name