Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 940 (Div. 2) and CodeCraft-23
38:49:44
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
constructive algorithms
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
582B
Once Again...
constructive algorithms
,
dp
,
matrices
1900
x3301
582A
GCD Table
constructive algorithms
,
greedy
,
number theory
1700
x7526
581D
Three Logos
bitmasks
,
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3407
578E
Walking!
constructive algorithms
,
greedy
2700
x611
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x3212
576B
Invariance of Tree
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2100
x1571
575D
Tablecity
constructive algorithms
,
implementation
1700
x1803
573C
Bear and Drawing
constructive algorithms
,
dfs and similar
,
trees
2300
x950
571C
CNF 2
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2500
x608
570D
Tree Requests
binary search
,
bitmasks
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2200
x6609
570C
Replacement
constructive algorithms
,
data structures
,
implementation
1600
x8960
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x15722
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x599
566B
Replicating Processes
constructive algorithms
,
greedy
2600
x258
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x7819
557B
Pasha and Tea
constructive algorithms
,
implementation
,
math
,
sortings
1500
x7075
553B
Kyoya and Permutation
binary search
,
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
1900
x2094
551B
ZgukistringZ
brute force
,
constructive algorithms
,
implementation
,
strings
1800
x3755
550E
Brackets in Implications
constructive algorithms
,
greedy
,
implementation
,
math
2200
x1376
550D
Regular Bridge
constructive algorithms
,
graphs
,
implementation
1900
x3236
549G
Happy Line
constructive algorithms
,
greedy
,
sortings
2200
x2390
549B
Looksery Party
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
2300
x1473
547D
Mike and Fish
constructive algorithms
,
dfs and similar
,
graphs
2600
x2406
546D
Soldier and Number Game
constructive algorithms
,
dp
,
math
,
number theory
1700
x11173
544B
Sea and Islands
constructive algorithms
,
implementation
1400
x7797
543E
Listening to Music
constructive algorithms
,
data structures
3200
x275
543B
Destroying Roads
constructive algorithms
,
graphs
,
shortest paths
2100
x3824
542C
Idempotent functions
constructive algorithms
,
graphs
,
math
2000
x1094
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x438
538D
Weird Chess
brute force
,
constructive algorithms
,
implementation
1800
x2406
538B
Quasi Binary
constructive algorithms
,
dp
,
greedy
,
implementation
1400
x17557
534E
Berland Local Positioning System
constructive algorithms
,
greedy
,
hashing
,
implementation
2400
x340
534D
Handshakes
binary search
,
constructive algorithms
,
data structures
,
greedy
1900
x2366
534A
Exam
constructive algorithms
,
implementation
,
math
1100
x11999
533E
Correcting Mistakes
constructive algorithms
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x2165
525D
Arthur and Walls
constructive algorithms
,
data structures
,
graphs
,
greedy
,
shortest paths
2400
x1630
525B
Pasha and String
constructive algorithms
,
greedy
,
math
,
strings
1400
x9163
518C
Anya and Smartphone
constructive algorithms
,
data structures
,
implementation
1600
x5918
518A
Vitaly and Strings
constructive algorithms
,
strings
1600
x9102
515D
Drazil and Tiles
constructive algorithms
,
greedy
2000
x2758
513D2
Constrained Tree
constructive algorithms
,
data structures
2600
x364
513A
Game
constructive algorithms
,
math
800
x19904
512E
Fox And Polygon
constructive algorithms
,
divide and conquer
2900
x498
509D
Restoring Numbers
constructive algorithms
,
math
2200
x729
509B
Painting Pebbles
constructive algorithms
,
greedy
,
implementation
1300
x9508
508C
Anya and Ghosts
constructive algorithms
,
greedy
1600
x4398
501C
Misha and Forest
constructive algorithms
,
data structures
,
greedy
,
sortings
,
trees
1500
x5501
500C
New Year Book Reading
constructive algorithms
,
greedy
,
implementation
,
math
1600
x5737
496C
Removing Columns
brute force
,
constructive algorithms
,
implementation
1500
x7548
496B
Secret Combination
brute force
,
constructive algorithms
,
implementation
1500
x5794
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x9471
491A
Up the hill
constructive algorithms
,
implementation
1000
x2810
488B
Candy Boxes
brute force
,
constructive algorithms
,
math
1900
x2075
487C
Prefix Product Sequence
constructive algorithms
,
math
,
number theory
2300
x2501
484E
Sign on Fence
binary search
,
constructive algorithms
,
data structures
2500
x2154
484A
Bits
bitmasks
,
constructive algorithms
1700
x10651
482B
Interesting Array
constructive algorithms
,
data structures
,
trees
1800
x6144
482A
Diverse Permutation
constructive algorithms
,
greedy
1200
x9497
479B
Towers
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x7535
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x35105
476D
Dreamoon and Sets
constructive algorithms
,
greedy
,
math
1900
x4309
475C
Kamal-ol-molk's Painting
brute force
,
constructive algorithms
,
greedy
2100
x776
472F
Design Tutorial: Change the Goal
constructive algorithms
,
math
,
matrices
2700
x247
472E
Design Tutorial: Learn from a Game
constructive algorithms
,
implementation
2800
x127
468C
Hack it!
binary search
,
constructive algorithms
,
math
2500
x2230
468A
24 Game
constructive algorithms
,
greedy
,
math
1500
x7742
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x35601
460D
Little Victor and Set
brute force
,
constructive algorithms
,
math
2300
x969
459C
Pashmak and Buses
combinatorics
,
constructive algorithms
,
math
1900
x6059
457E
Flow Optimality
constructive algorithms
,
flows
,
math
3000
x80
453C
Little Pony and Summer Sun Celebration
constructive algorithms
,
dfs and similar
,
graphs
2200
x1565
452B
4-point polyline
brute force
,
constructive algorithms
,
geometry
,
trees
1800
x1973
449C
Jzzhu and Apples
constructive algorithms
,
number theory
2500
x2191
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83353
441D
Valera and Swaps
constructive algorithms
,
dsu
,
graphs
,
implementation
,
math
,
string suffix structures
2100
x1059
441C
Valera and Tubes
constructive algorithms
,
dfs and similar
,
implementation
1500
x10818
439C
Devu and Partitioning of the Array
brute force
,
constructive algorithms
,
implementation
,
number theory
1700
x3792
432E
Square Tiling
constructive algorithms
,
greedy
2300
x656
430A
Points and Segments (easy)
constructive algorithms
,
sortings
1600
x2214
429C
Guess the Tree
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
trees
2300
x898
424D
Biathlon Track
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
2300
x553
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x5763
417E
Square Table
constructive algorithms
,
math
,
probabilities
2400
x765
417C
Football
constructive algorithms
,
graphs
,
implementation
1400
x4605
414A
Mashmokh and Numbers
constructive algorithms
,
number theory
1500
x9620
409H
A + B Strikes Back
*special problem
,
brute force
,
constructive algorithms
,
dsu
,
implementation
1500
x8618
402C
Searching for Graph
brute force
,
constructive algorithms
,
graphs
1500
x5671
401C
Team
constructive algorithms
,
greedy
,
implementation
1400
x19232
398C
Tree and Array
constructive algorithms
x207
398A
Cards
constructive algorithms
,
implementation
x910
397B
On Corruption and Numbers
constructive algorithms
,
implementation
,
math
x735
394C
Dominoes
constructive algorithms
,
greedy
x511
390D
Inna and Sweet Matrix
constructive algorithms
x504
388B
Fox and Minimal path
bitmasks
,
constructive algorithms
,
graphs
,
implementation
,
math
1900
x2431
379B
New Year Present
constructive algorithms
,
implementation
1200
x7155
370D
Broken Monitor
brute force
,
constructive algorithms
,
greedy
,
implementation
2100
x604
370C
Mittens
constructive algorithms
,
greedy
,
sortings
1800
x1498
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6280
361B
Levko and Permutation
constructive algorithms
,
math
,
number theory
1200
x7870
361A
Levko and Table
constructive algorithms
,
implementation
800
x16153
←
1
2
...
13
14
15
16
17
→
User lists
Name