Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Educational Codeforces Round 167 (Rated for Div. 2)
35:52:50
Register now »
→ Filter Problems
Difficulty:
—
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
44E
Anfisa the Monkey
dp
1400
x4906
44D
Hyperdrive
math
1800
x696
44C
Holidays
implementation
1300
x3248
44B
Cola
implementation
1500
x1923
44A
Indian Summer
implementation
900
x9828
43E
Race
brute force
,
implementation
,
two pointers
2300
x387
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1067
43C
Lucky Tickets
greedy
1300
x4188
43B
Letter
implementation
,
strings
1100
x15980
43A
Football
strings
1000
x53410
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x197
42D
Strange town
constructive algorithms
,
math
2300
x390
42C
Safe cracking
brute force
,
constructive algorithms
2200
x457
42B
Game of chess unfinished
implementation
1700
x927
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2774
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1912
41D
Pawn
dp
1900
x2220
41C
Email address
expression parsing
,
implementation
1300
x3672
41B
Martian Dollar
brute force
1400
x3908
41A
Translation
implementation
,
strings
800
x137942
40E
Number Table
combinatorics
2500
x660
40D
Interesting Sequence
math
2600
x128
40C
Berland Square
implementation
,
math
2300
x243
40B
Repaintings
math
1600
x1128
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3924
39K
Testing
2600
x84
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x2859
39I
Tram
2500
x127
39H
Multiplication Table
implementation
1300
x2630
39G
Inverse Function
implementation
2400
x125
39F
Pacifist frogs
implementation
1300
x1510
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x859
39D
Cubical Planet
math
1100
x3801
39C
Moon Craters
dp
,
sortings
2100
x572
39B
Company Income Growth
greedy
1300
x2583
39A
C*++ Calculations
expression parsing
,
greedy
2000
x658
38H
The Great Marathon
dp
2400
x267
38G
Queue
data structures
2300
x685
38F
Smart Boy
dp
,
games
,
strings
2100
x379
38E
Let's Go Rolling!
dp
,
sortings
1800
x2516
38D
Vasya the Architect
implementation
1900
x479
38C
Blinds
brute force
1400
x2100
38B
Chess
brute force
,
implementation
,
math
1200
x3435
38A
Army
implementation
800
x20700
37E
Trial for Chief
graphs
,
greedy
,
shortest paths
2600
x591
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x390
37C
Old Berland Language
data structures
,
greedy
,
trees
1900
x1577
37B
Computer Game
greedy
,
implementation
1800
x872
37A
Towers
sortings
1000
x23823
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x500
36D
New Game with a Chess Piece
games
2300
x681
36C
Bowls
geometry
,
implementation
2200
x330
36B
Fractal
implementation
1600
x1442
36A
Extra-terrestrial Intelligence
implementation
1300
x2921
35E
Parade
data structures
,
sortings
2100
x707
35D
Animals
dp
,
greedy
1700
x3194
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x6538
35B
Warehouse
implementation
1700
x995
35A
Shell Game
implementation
1000
x6675
34E
Collisions
brute force
,
implementation
,
math
2000
x568
34D
Road Map
dfs and similar
,
graphs
1600
x4904
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4111
34B
Sale
greedy
,
sortings
900
x49741
34A
Reconnaissance 2
implementation
800
x28878
33E
Helper
2600
x125
33D
Knights
geometry
,
graphs
,
shortest paths
,
sortings
2000
x1147
33C
Wonderful Randomized Sum
greedy
1800
x2896
33B
String Problem
shortest paths
1800
x4263
33A
What is for dinner?
greedy
,
implementation
1200
x3907
32E
Hide-and-Seek
geometry
,
implementation
2400
x324
32D
Constellation
implementation
1600
x1249
32C
Flea
math
1700
x2082
32B
Borze
expression parsing
,
implementation
800
x60183
32A
Reconnaissance
brute force
800
x12131
31E
TV Game
dp
2400
x1039
31D
Chocolate
dfs and similar
,
implementation
2000
x1002
31C
Schedule
implementation
1700
x1748
31B
Sysadmin Bob
greedy
,
implementation
,
strings
1500
x4152
31A
Worms Evolution
implementation
1200
x10037
30E
Tricky and Clever Password
binary search
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
strings
2800
x688
30D
King's Problem?
geometry
,
greedy
2600
x414
30C
Shooting Gallery
dp
,
probabilities
1800
x1877
30B
Codeforces World Finals
implementation
1700
x1157
30A
Accounting
brute force
,
math
1400
x3353
29E
Quarrel
graphs
,
shortest paths
2400
x873
29D
Ant on the Tree
constructive algorithms
,
dfs and similar
,
trees
2000
x2355
29C
Mail Stamps
data structures
,
dfs and similar
,
graphs
,
implementation
1700
x4647
29B
Traffic Lights
implementation
1500
x2860
29A
Spit Problem
brute force
1000
x6898
28E
DravDe saves the world
geometry
,
math
2800
x87
28D
Don't fear, DravDe is kind
binary search
,
data structures
,
dp
,
hashing
2400
x591
28C
Bath Queue
combinatorics
,
dp
,
probabilities
2200
x998
28B
pSort
dfs and similar
,
dsu
,
graphs
1600
x4456
28A
Bender Problem
implementation
1600
x773
27E
Number With The Given Amount Of Divisors
brute force
,
dp
,
number theory
2000
x4030
27D
Ring Road 2
2-sat
,
dfs and similar
,
dsu
,
graphs
2200
x2389
27C
Unordered Subsequence
constructive algorithms
,
greedy
1900
x2708
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x5203
27A
Next Test
implementation
,
sortings
1200
x19566
26E
Multithreading
constructive algorithms
2400
x368
←
1
2
...
93
94
95
96
97
→
User lists
Name