Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 968 (Div. 2)
34:13:26
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
dp
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
346D
Robot Control
dp
,
graphs
,
shortest paths
2600
x715
346B
Lucky Common Subsequence
dp
,
strings
2000
x3453
342D
Xenia and Dominoes
bitmasks
,
dfs and similar
,
dp
2100
x492
337D
Book of Evil
dfs and similar
,
divide and conquer
,
dp
,
trees
2000
x6024
336E
Vasily the Bear and Painting Square
bitmasks
,
combinatorics
,
dp
,
implementation
2700
x113
335F
Buy One, Get One Free
dp
,
greedy
3000
x510
335E
Counting Skyscrapers
dp
,
math
,
probabilities
2800
x219
335D
Rectangles and Square
brute force
,
dp
2400
x326
335B
Palindrome
constructive algorithms
,
dp
1900
x2068
332E
Binary Key
dp
,
greedy
,
implementation
2400
x299
331E2
Deja Vu
constructive algorithms
,
dp
3100
x218
331C3
The Great Julya Calendar
dp
2500
x472
331C2
The Great Julya Calendar
dp
2400
x374
327E
Axis Walking
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
meet-in-the-middle
2300
x1370
321E
Ciel and Gondolas
data structures
,
divide and conquer
,
dp
2600
x4835
321D
Ciel and Flipboard
dp
,
greedy
,
math
2900
x530
321B
Ciel and Duel
dp
,
flows
,
greedy
1900
x3052
319C
Kalila and Dimna in the Logging Industry
dp
,
geometry
2100
x5098
317D
Game with Powers
dp
,
games
2300
x1043
316D3
PE Lesson
dp
,
math
2400
x561
316D2
PE Lesson
dp
2300
x443
316D1
PE Lesson
brute force
,
dp
2300
x509
314E
Sereja and Squares
dp
2900
x368
314C
Sereja and Subsequences
data structures
,
dp
2000
x1821
313D
Ilya and Roads
dp
2100
x1457
311B
Cats Transport
data structures
,
dp
2400
x3376
309B
Context Advertising
dp
,
two pointers
2100
x711
303E
Random Ranking
dp
,
math
,
probabilities
3000
x316
301E
Yaroslav and Arrangements
dp
2800
x365
300D
Painting Square
dp
,
fft
2300
x747
296B
Yaroslav and Two Strings
combinatorics
,
dp
2000
x2206
295D
Greg and Caves
combinatorics
,
dp
2400
x647
295C
Greg and Friends
combinatorics
,
dp
,
graphs
,
shortest paths
2100
x1682
294E
Shaass the Great
dp
,
trees
2300
x924
292D
Connected Components
data structures
,
dfs and similar
,
dp
,
dsu
1900
x2413
288E
Polo the Penguin and Lucky Numbers
dp
,
implementation
,
math
2800
x289
285E
Positions in Permutations
combinatorics
,
dp
,
math
2600
x974
285D
Permutation Sum
bitmasks
,
combinatorics
,
dp
,
implementation
,
meet-in-the-middle
1900
x1532
283D
Cows and Cool Sequences
dp
,
math
,
number theory
2400
x529
283C
Coin Troubles
dp
2100
x1427
282D
Yet Another Number Game
dp
,
games
2100
x1408
280E
Sequence Transformation
brute force
,
data structures
,
dp
,
implementation
,
math
3000
x204
279E
Beautiful Decomposition
dp
,
games
,
greedy
,
number theory
1900
x1429
279D
The Minimum Number of Variables
bitmasks
,
dp
2200
x721
277D
Google Code Jam
dp
,
probabilities
2800
x333
274B
Zero Tree
dfs and similar
,
dp
,
greedy
,
trees
1800
x4980
273E
Dima and Game
dp
,
games
2600
x364
273D
Dima and Figure
dp
2400
x393
269D
Maximum Waterfall
data structures
,
dp
,
graphs
,
sortings
2600
x446
268D
Wall Bars
dp
2300
x505
264E
Roadside Trees
data structures
,
dp
3000
x427
264D
Colorful Stones
dp
,
two pointers
2500
x414
264C
Choosing Balls
dp
2000
x2855
263E
Rhombus
brute force
,
data structures
,
dp
2500
x398
261E
Maxim and Calculator
brute force
,
dp
,
two pointers
2800
x412
261D
Maxim and Increasing Subsequence
dp
2600
x557
261C
Maxim and Matrix
constructive algorithms
,
dp
,
math
2000
x769
261B
Maxim and Restaurant
dp
,
math
,
probabilities
1900
x1393
258D
Little Elephant and Broken Sorting
dp
,
math
,
probabilities
2600
x1246
258C
Little Elephant and LCM
binary search
,
combinatorics
,
dp
,
math
2000
x1781
258B
Little Elephant and Elections
brute force
,
combinatorics
,
dp
1900
x1435
256D
Liars and Serge
dp
2700
x256
254E
Dormitory
dp
,
implementation
2100
x666
251E
Tree and Table
dfs and similar
,
dp
,
implementation
,
trees
3000
x169
251C
Number Transformation
dp
,
greedy
,
number theory
2000
x1021
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x451
248E
Piglet's Birthday
dp
,
math
,
probabilities
2600
x574
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x3142
245H
Queries for Number of Palindromes
dp
,
hashing
,
strings
1800
x6447
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x211
238E
Meeting Her
dp
,
graphs
,
shortest paths
2600
x376
238C
World Eater Brothers
dfs and similar
,
dp
,
greedy
,
trees
2100
x1224
235E
Number Challenge
combinatorics
,
dp
,
implementation
,
math
,
number theory
2600
x770
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x3463
234F
Fence
dp
1800
x1728
232E
Quick Tortoise
bitmasks
,
divide and conquer
,
dp
3000
x687
232C
Doe Graphs
constructive algorithms
,
divide and conquer
,
dp
,
graphs
,
shortest paths
2600
x286
232B
Table
bitmasks
,
combinatorics
,
dp
,
math
1900
x1418
231E
Cactus
data structures
,
dfs and similar
,
dp
,
graphs
,
trees
2100
x1813
229E
Gifts
combinatorics
,
dp
,
math
,
probabilities
2600
x458
229D
Towers
dp
,
greedy
,
two pointers
2100
x2199
228C
Fractal Detector
dp
,
hashing
2000
x449
223B
Two Strings
data structures
,
dp
,
strings
1900
x1757
222E
Decoding Genome
dp
,
matrices
1900
x2705
217C
Formurosa
divide and conquer
,
dp
,
expression parsing
2600
x329
215E
Periodical Numbers
combinatorics
,
dp
,
number theory
2100
x546
213C
Relay Race
dp
2000
x2815
213B
Numbers
combinatorics
,
dp
1900
x1682
212C
Cowboys
combinatorics
,
dp
,
math
2100
x381
208C
Police Station
dp
,
graphs
,
shortest paths
1900
x1818
208B
Solitaire
dfs and similar
,
dp
1900
x1354
204D
Little Elephant and Retro Strings
dp
2400
x578
201D
Brand New Problem
bitmasks
,
brute force
,
dp
2600
x408
201C
Fragile Bridges
dp
2000
x1322
187B
AlgoRace
dp
,
shortest paths
1800
x1952
185C
Clever Fat Rat
dp
2500
x133
183D
T-shirt
dp
,
greedy
,
probabilities
2700
x401
182E
Wooden Fence
dp
1800
x1446
180E
Cubes
binary search
,
dp
,
two pointers
1800
x1752
178F2
Representative Sampling
dp
,
sortings
,
strings
2200
x326
←
1
2
...
13
14
15
16
17
→
User lists
Name