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Name
207D4
The Beaver's Problem - 3
2100
x173
207D3
The Beaver's Problem - 3
2000
x148
207D2
The Beaver's Problem - 3
2000
x117
207D10
The Beaver's Problem - 3
2100
x86
207D1
The Beaver's Problem - 3
1800
x124
207C3
Game with Two Trees
data structures
2700
x164
207C2
Game with Two Trees
2200
x105
207C1
Game with Two Trees
2100
x136
207B3
Military Trainings
1700
x214
207B2
Military Trainings
1900
x238
207B1
Military Trainings
1600
x357
207A3
Beaver's Calculator 1.0
greedy
2000
x276
207A2
Beaver's Calculator 1.0
greedy
1800
x305
207A1
Beaver's Calculator 1.0
greedy
1600
x370
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x6477
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x25215
204E
Little Elephant and Strings
data structures
,
implementation
,
string suffix structures
,
two pointers
2800
x1433
204D
Little Elephant and Retro Strings
dp
2400
x636
204C
Little Elephant and Furik and Rubik
math
,
probabilities
2000
x1234
204B
Little Elephant and Cards
binary search
,
data structures
1500
x5902
204A
Little Elephant and Interval
binary search
,
combinatorics
,
dp
1500
x6585
203E
Transportation
greedy
,
sortings
,
two pointers
2300
x309
203D
Hit Ball
geometry
,
implementation
,
math
1700
x1513
203C
Photographer
greedy
,
sortings
1400
x6062
203B
Game on Paper
brute force
,
implementation
1300
x2785
203A
Two Problems
brute force
,
implementation
1200
x4423
202B
Brand New Easy Problem
brute force
1700
x857
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x19745
201E
Thoroughly Bureaucratic Organization
binary search
,
combinatorics
2600
x483
201D
Brand New Problem
bitmasks
,
brute force
,
dp
2600
x453
201C
Fragile Bridges
dp
2000
x1512
201B
Guess That Car!
math
,
ternary search
1800
x1391
201A
Clear Symmetry
constructive algorithms
,
dp
,
math
1700
x3245
200E
Tractor College
implementation
,
math
,
number theory
,
ternary search
2400
x366
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x1054
200C
Football Championship
brute force
,
implementation
1800
x1107
200B
Drinks
implementation
,
math
800
x148255
200A
Cinema
brute force
,
data structures
2400
x732
199B
Special Olympics
geometry
1900
x877
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x30271
198E
Gripping Story
binary search
,
data structures
,
sortings
2400
x554
198D
Cube Snake
constructive algorithms
2700
x117
198C
Delivering Carcinogen
binary search
,
geometry
2400
x428
198B
Jumping on Walls
shortest paths
1400
x5167
198A
About Bacteria
implementation
,
math
1700
x3329
197B
Limit
math
1400
x4917
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6841
196E
Opening Portals
dsu
,
graphs
,
shortest paths
2600
x1203
196D
The Next Good String
data structures
,
greedy
,
hashing
,
strings
2800
x599
196C
Paint Tree
constructive algorithms
,
divide and conquer
,
geometry
,
sortings
,
trees
2200
x1040
196B
Infinite Maze
dfs and similar
,
graphs
2000
x2376
196A
Lexicographically Maximum Subsequence
greedy
,
strings
1100
x5843
195E
Building Forest
data structures
,
dsu
,
graphs
2000
x859
195D
Analyzing Polyline
geometry
,
math
,
sortings
1900
x1135
195C
Try and Catch
expression parsing
,
implementation
1800
x1239
195B
After Training
data structures
,
implementation
,
math
1300
x5510
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x10128
194B
Square
math
1200
x3985
194A
Exams
implementation
,
math
900
x10912
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x406
193D
Two Segments
data structures
2900
x608
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x605
193B
Xor
brute force
2000
x1139
193A
Cutting Figure
constructive algorithms
,
graphs
,
trees
1700
x4681
192B
Walking in the Rain
brute force
,
implementation
1100
x6799
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x11564
191E
Thwarting Demonstrations
binary search
,
data structures
,
trees
2200
x959
191D
Metro Scheme
graphs
,
greedy
2700
x392
191C
Fools and Roads
data structures
,
dfs and similar
,
trees
1900
x9212
191B
Demonstration
greedy
1700
x1100
191A
Dynasty Puzzles
dp
1500
x4551
190E
Counter Attack
data structures
,
dsu
,
graphs
,
hashing
,
sortings
2100
x1736
190D
Non-Secret Cypher
two pointers
1900
x2660
190C
STL
dfs and similar
1500
x3225
190B
Surrounded
geometry
1800
x3091
190A
Vasya and the Bus
greedy
,
math
1100
x6258
189B
Counting Rhombi
brute force
,
math
1300
x4217
189A
Cut Ribbon
brute force
,
dp
1300
x80781
188H
Stack
*special problem
,
expression parsing
,
implementation
1800
x686
188G
Array Sorting
*special problem
,
implementation
1600
x346
188F
Binary Notation
*special problem
,
implementation
1400
x345
188E
HQ9+
*special problem
,
implementation
1400
x556
188D
Asterisks
*special problem
,
implementation
1100
x750
188C
LCM
*special problem
,
implementation
,
math
1400
x501
188B
A + Reverse B
*special problem
,
implementation
1300
x788
188A
Hexagonal Numbers
*special problem
1100
x848
187E
Heaven Tour
data structures
,
greedy
2900
x117
187D
BRT Contract
data structures
2800
x583
187C
Weak Memory
dfs and similar
,
dsu
2000
x1578
187B
AlgoRace
dp
,
shortest paths
1800
x2333
187A
Permutations
greedy
1500
x3042
186B
Growing Mushrooms
greedy
,
sortings
1200
x6173
186A
Comparing Strings
implementation
,
strings
1100
x18458
185E
Soap Time! - 2
binary search
,
data structures
3000
x173
185D
Visit of the Great
math
,
number theory
2600
x503
185C
Clever Fat Rat
dp
2500
x151
185B
Mushroom Scientists
math
,
ternary search
1800
x1786
185A
Plant
math
1300
x6519
183E
Candy Shop
greedy
2900
x186
183D
T-shirt
dp
,
greedy
,
probabilities
2700
x481
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Before contest
Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
4 days
Register now »
*has extra registration
Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
4 days
Register now »
*has extra registration
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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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