Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 973 (Div. 2)
13:33:26
Register now »
*has extra registration
→ 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
366D
Dima and Trap Graph
binary search
,
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
two pointers
2000
x1555
362D
Fools and Foolproof Roads
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
2100
x926
359E
Neatness
constructive algorithms
,
dfs and similar
2400
x466
354E
Lucky Number Representation
constructive algorithms
,
dfs and similar
,
dp
2200
x877
350E
Wrong Floyd
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
2200
x767
348E
Pilgrims
dfs and similar
,
dp
,
trees
2800
x441
348B
Apple Tree
dfs and similar
,
number theory
,
trees
2100
x2076
345D
Chain Letter
*special problem
,
dfs and similar
,
graphs
2200
x79
343E
Pumping Stations
brute force
,
dfs and similar
,
divide and conquer
,
flows
,
graphs
,
greedy
,
trees
2900
x720
343D
Water Tree
data structures
,
dfs and similar
,
graphs
,
trees
2100
x5745
342D
Xenia and Dominoes
bitmasks
,
dfs and similar
,
dp
2100
x496
339E
Three Swaps
constructive algorithms
,
dfs and similar
,
greedy
2700
x547
339C
Xenia and Weights
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x8293
337D
Book of Evil
dfs and similar
,
divide and conquer
,
dp
,
trees
2000
x6067
331D1
Escaping on Beaveractor
dfs and similar
,
implementation
2400
x204
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x6339
327D
Block Tower
constructive algorithms
,
dfs and similar
,
graphs
1900
x2269
325E
The Red Button
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
greedy
2800
x780
325C
Monsters and Diamonds
dfs and similar
,
graphs
,
shortest paths
2600
x337
321C
Ciel the Commander
constructive algorithms
,
dfs and similar
,
divide and conquer
,
greedy
,
trees
2100
x7196
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7192
317C
Balance
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2500
x495
316F3
Suns and Rays
constructive algorithms
,
dfs and similar
,
implementation
2200
x182
316F1
Suns and Rays
dfs and similar
,
implementation
2200
x180
316B2
EKG
dfs and similar
,
dp
1600
x1578
316B1
EKG
brute force
,
dfs and similar
1500
x1369
314B
Sereja and Periods
binary search
,
dfs and similar
,
strings
2000
x1514
300B
Coach
brute force
,
dfs and similar
,
graphs
1500
x6266
292D
Connected Components
data structures
,
dfs and similar
,
dp
,
dsu
1900
x2426
291E
Tree-String Problem
*special problem
,
dfs and similar
,
hashing
,
strings
2000
x1307
290F
Greedy Petya
*special problem
,
dfs and similar
,
graphs
,
greedy
2800
x132
288D
Polo the Penguin and Trees
combinatorics
,
dfs and similar
,
trees
2400
x751
283B
Cow Program
dfs and similar
,
dp
,
graphs
1700
x3653
277A
Learning Languages
dfs and similar
,
dsu
1400
x18781
274D
Lovely Matrix
dfs and similar
,
graphs
,
greedy
,
sortings
2200
x1029
274B
Zero Tree
dfs and similar
,
dp
,
greedy
,
trees
1800
x4996
267B
Dominoes
dfs and similar
,
graphs
2000
x632
263D
Cycle in Graph
dfs and similar
,
graphs
1800
x3582
263C
Circle of Numbers
brute force
,
dfs and similar
,
implementation
2000
x1074
258E
Little Elephant and Tree
data structures
,
dfs and similar
,
trees
2400
x1091
254D
Rats
brute force
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
2300
x535
253C
Text Editor
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x2592
251E
Tree and Table
dfs and similar
,
dp
,
implementation
,
trees
3000
x170
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x3192
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x9397
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x4461
243C
Colorado Potato Beetle
dfs and similar
,
implementation
2200
x529
242D
Dispute
dfs and similar
,
graphs
,
greedy
2100
x1864
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x8524
240E
Road Repairs
dfs and similar
,
graphs
,
greedy
2800
x356
238C
World Eater Brothers
dfs and similar
,
dp
,
greedy
,
trees
2100
x1229
237D
T-decomposition
dfs and similar
,
graphs
,
greedy
,
trees
2000
x561
231E
Cactus
data structures
,
dfs and similar
,
dp
,
graphs
,
trees
2100
x1834
228E
The Road to Berland is Paved With Good Intentions
2-sat
,
dfs and similar
,
dsu
,
graphs
1900
x2422
225D
Snake
bitmasks
,
dfs and similar
,
graphs
,
implementation
2200
x944
219D
Choosing Capital for Treeland
dfs and similar
,
dp
,
graphs
,
trees
1700
x9289
217D
Bitonix' Patrol
bitmasks
,
brute force
,
combinatorics
,
dfs and similar
,
math
2900
x250
217A
Ice Skating
brute force
,
dfs and similar
,
dsu
,
graphs
1200
x21054
216B
Forming Teams
dfs and similar
,
implementation
1700
x6322
213A
Game
dfs and similar
,
greedy
1700
x1719
212E
IT Restaurants
dfs and similar
,
dp
,
trees
1500
x1722
208E
Blood Cousins
binary search
,
data structures
,
dfs and similar
,
trees
2100
x6582
208B
Solitaire
dfs and similar
,
dp
1900
x1355
196B
Infinite Maze
dfs and similar
,
graphs
2000
x2205
191C
Fools and Roads
data structures
,
dfs and similar
,
trees
1900
x7146
190C
STL
dfs and similar
1500
x2810
187C
Weak Memory
dfs and similar
,
dsu
2000
x1331
183C
Cyclic Coloring
dfs and similar
2200
x609
177C2
Party
brute force
,
dfs and similar
,
dsu
,
graphs
1500
x2546
177C1
Party
dfs and similar
,
dsu
,
graphs
1500
x2546
176E
Archaeology
data structures
,
dfs and similar
,
trees
3100
x1138
173B
Chamber of Secrets
dfs and similar
,
shortest paths
1800
x3059
172E
BHTML+BCSS
*special problem
,
dfs and similar
,
expression parsing
2200
x270
167E
Wizards and Bets
dfs and similar
,
graphs
,
math
,
matrices
2900
x572
165E
Compatible Numbers
bitmasks
,
brute force
,
dfs and similar
,
dp
2200
x6727
164A
Variable, or There and Back Again
dfs and similar
,
graphs
1700
x1008
163E
e-Government
data structures
,
dfs and similar
,
dp
,
strings
,
trees
2800
x1695
161D
Distance in Tree
dfs and similar
,
dp
,
trees
1800
x14663
160D
Edges in MST
dfs and similar
,
dsu
,
graphs
,
sortings
2300
x2491
150B
Quantity of Strings
combinatorics
,
dfs and similar
,
graphs
,
math
1600
x4118
144D
Missile Silos
data structures
,
dfs and similar
,
graphs
,
shortest paths
1900
x3944
135D
Cycle
brute force
,
dfs and similar
,
implementation
2500
x299
134B
Pairs of Numbers
brute force
,
dfs and similar
,
math
,
number theory
1900
x2012
131D
Subway
dfs and similar
,
graphs
1600
x4650
129B
Students and Shoelaces
brute force
,
dfs and similar
,
graphs
,
implementation
1200
x12117
128A
Statues
dfs and similar
1500
x3176
123E
Maze
dfs and similar
,
dp
,
probabilities
,
trees
2500
x716
118E
Bertown roads
dfs and similar
,
graphs
2000
x6518
117C
Cycle
dfs and similar
,
graphs
2000
x2603
115A
Party
dfs and similar
,
graphs
,
trees
900
x34310
107A
Dorm Water Supply
dfs and similar
,
graphs
1400
x5076
103B
Cthulhu
dfs and similar
,
dsu
,
graphs
1500
x8800
100H
Battleship
*special problem
,
dfs and similar
,
implementation
2100
x76
97E
Leaders
dfs and similar
,
dsu
,
graphs
,
trees
2200
x381
87D
Beautiful Road
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
2300
x882
85C
Petya and Tree
binary search
,
dfs and similar
,
probabilities
,
sortings
,
trees
2200
x535
82C
General Mobilization
data structures
,
dfs and similar
,
sortings
2000
x805
81E
Pairs
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
trees
2700
x340
77C
Beavermuncher-0xFF
dfs and similar
,
dp
,
dsu
,
greedy
,
trees
2100
x998
74C
Chessboard Billiard
dfs and similar
,
dsu
,
graphs
,
number theory
2100
x1276
←
1
2
...
7
8
9
10
→
User lists
Name