Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round (Div. 3)
33:16:13
Register now »
→ Filter Problems
Difficulty:
—
implementation
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
65E
Harry Potter and Moving Staircases
dfs and similar
,
implementation
2900
x84
65B
Harry Potter and the History of Magic
brute force
,
greedy
,
implementation
1700
x1319
65A
Harry Potter and Three Spells
implementation
,
math
1800
x1781
64C
Table
*special problem
,
greedy
,
implementation
,
math
1600
x331
64A
Factorial
*special problem
,
implementation
1300
x2687
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2000
x713
63C
Bulls and Cows
brute force
,
implementation
1700
x1624
63B
Settlers' Training
implementation
1200
x4707
63A
Sinking Ship
implementation
,
sortings
,
strings
900
x10846
62C
Inquisition
geometry
,
implementation
,
sortings
2300
x247
62B
Tyndex.Brome
binary search
,
implementation
1800
x1262
61A
Ultra-Fast Mathematician
implementation
800
x103362
60A
Where Are My Flakes?
implementation
,
two pointers
1300
x3523
59D
Team Arrangement
constructive algorithms
,
greedy
,
implementation
2000
x601
59B
Fortune Telling
implementation
,
number theory
1200
x6640
59A
Word
implementation
,
strings
800
x161563
57B
Martian Architecture
implementation
1600
x986
57A
Square Earth?
dfs and similar
,
greedy
,
implementation
1300
x2811
56C
Corporation Mail
data structures
,
expression parsing
,
implementation
1700
x1118
56B
Spoilt Permutation
implementation
1300
x3615
56A
Bar
implementation
1000
x8322
55A
Flea travel
implementation
,
math
1200
x3333
54B
Cutting Jigsaw Puzzle
hashing
,
implementation
1800
x737
54A
Presents
implementation
1300
x1998
53B
Blog Photo
binary search
,
implementation
1700
x1362
53A
Autocomplete
implementation
1100
x4820
52A
123-sequence
implementation
900
x8270
51D
Geometrical problem
implementation
2200
x417
51A
Cheaterius's Problem
implementation
1300
x1777
49D
Game
brute force
,
dp
,
implementation
1800
x1831
49A
Sleuth
implementation
800
x12879
48B
Land Lot
brute force
,
implementation
1200
x2599
48A
Rock-paper-scissors
implementation
,
schedules
900
x5600
47C
Crossword
implementation
2000
x739
47B
Coins
implementation
1200
x12989
46D
Parking Lot
data structures
,
implementation
1800
x957
46B
T-shirts from Sponsor
implementation
1100
x3533
46A
Ball Game
brute force
,
implementation
800
x8376
45A
Codecraft III
implementation
900
x6317
44G
Shooting Gallery
data structures
,
implementation
2500
x361
44C
Holidays
implementation
1300
x3202
44B
Cola
implementation
1500
x1900
44A
Indian Summer
implementation
900
x9407
43E
Race
brute force
,
implementation
,
two pointers
2300
x371
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1046
43B
Letter
implementation
,
strings
1100
x15660
42B
Game of chess unfinished
implementation
1700
x920
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2743
41C
Email address
expression parsing
,
implementation
1300
x3635
41A
Translation
implementation
,
strings
800
x134565
40C
Berland Square
implementation
,
math
2300
x239
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3839
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x2785
39H
Multiplication Table
implementation
1300
x2602
39G
Inverse Function
implementation
2400
x123
39F
Pacifist frogs
implementation
1300
x1484
38D
Vasya the Architect
implementation
1900
x471
38B
Chess
brute force
,
implementation
,
math
1200
x3385
38A
Army
implementation
800
x20494
37B
Computer Game
greedy
,
implementation
1800
x861
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x495
36C
Bowls
geometry
,
implementation
2200
x295
36B
Fractal
implementation
1600
x1417
36A
Extra-terrestrial Intelligence
implementation
1300
x2892
35B
Warehouse
implementation
1700
x988
35A
Shell Game
implementation
1000
x6611
34E
Collisions
brute force
,
implementation
,
math
2000
x563
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4065
34A
Reconnaissance 2
implementation
800
x28417
33A
What is for dinner?
greedy
,
implementation
1200
x3844
32E
Hide-and-Seek
geometry
,
implementation
2400
x321
32D
Constellation
implementation
1600
x1237
32B
Borze
expression parsing
,
implementation
800
x58511
31D
Chocolate
dfs and similar
,
implementation
2000
x988
31C
Schedule
implementation
1700
x1720
31B
Sysadmin Bob
greedy
,
implementation
,
strings
1500
x4099
31A
Worms Evolution
implementation
1200
x9912
30B
Codeforces World Finals
implementation
1700
x1148
29C
Mail Stamps
data structures
,
dfs and similar
,
graphs
,
implementation
1700
x4548
29B
Traffic Lights
implementation
1500
x2824
28A
Bender Problem
implementation
1600
x769
27A
Next Test
implementation
,
sortings
1200
x19276
26C
Parquet
combinatorics
,
constructive algorithms
,
greedy
,
implementation
2000
x820
25B
Phone numbers
implementation
1100
x9279
24C
Sequence of points
geometry
,
implementation
,
math
1800
x1210
24B
F1 Champions
implementation
1500
x1709
21B
Intersection
implementation
,
math
2000
x1298
21A
Jabber ID
implementation
,
strings
1900
x1770
20A
BerOS file system
implementation
1700
x5931
19A
World Football Cup
implementation
1400
x2578
18C
Stripe
data structures
,
implementation
1200
x12440
16D
Logging
implementation
,
strings
1900
x1509
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x16802
16A
Flag
implementation
800
x13556
15D
Map
data structures
,
implementation
,
sortings
2500
x711
15A
Cottage Village
implementation
,
sortings
1200
x3563
14C
Four Segments
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3083
14B
Young Photographer
implementation
1000
x6658
14A
Letter
implementation
800
x10042
13B
Letter A
geometry
,
implementation
2000
x828
←
1
2
...
24
25
26
27
→
User lists
Name