Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 968 (Div. 2)
2 days
Register now »
*has extra registration
→ 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
1548A
Web of Lies
brute force
,
graphs
,
greedy
1400
x16323
1540A
Great Graphs
constructive algorithms
,
graphs
,
greedy
,
shortest paths
,
sortings
1400
x13869
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x16376
1526B
I Hate 1111
dp
,
math
,
number theory
1400
x30061
1520E
Arranging The Sheep
greedy
,
math
1400
x21001
1519C
Berland Regional
brute force
,
data structures
,
greedy
,
number theory
,
sortings
1400
x16628
1517C
Fillomino 2
constructive algorithms
,
dfs and similar
,
greedy
,
implementation
1400
x13290
1515C
Phoenix and Towers
constructive algorithms
,
data structures
,
greedy
1400
x16974
1513B
AND Sequences
bitmasks
,
combinatorics
,
constructive algorithms
,
math
1400
x14461
1506D
Epic Transformation
constructive algorithms
,
data structures
,
greedy
1400
x21500
1505C
Fibonacci Words
*special problem
,
implementation
1400
x6397
1494B
Berland Crossword
bitmasks
,
brute force
,
greedy
,
implementation
1400
x14246
1490E
Accidental Victory
binary search
,
data structures
,
greedy
1400
x18881
1475C
Ball in Berland
combinatorics
,
graphs
,
math
1400
x20874
1468C
Berpizza
data structures
,
implementation
1400
x7712
1463B
Find The Array
bitmasks
,
constructive algorithms
,
greedy
1400
x19214
1462D
Add to Neighbour and Remove
greedy
,
math
,
number theory
1400
x16619
1461B
Find the Spruce
brute force
,
dp
,
implementation
1400
x12566
1453B
Suffix Operations
constructive algorithms
,
implementation
1400
x13297
1452B
Toy Blocks
binary search
,
greedy
,
math
,
sortings
1400
x14634
1451C
String Equality
dp
,
greedy
,
hashing
,
implementation
,
strings
1400
x15426
1443C
The Delivery Dilemma
binary search
,
greedy
,
sortings
1400
x15165
1431B
Polycarp and the Language of Gods
*special problem
,
implementation
,
two pointers
1400
x1007
1427B
Chess Cheater
greedy
,
implementation
,
sortings
1400
x10854
1425F
Flamingoes of Mystery
interactive
1400
x5560
1425A
Arena of Greed
games
,
greedy
1400
x6475
1421C
Palindromifier
constructive algorithms
,
strings
1400
x12729
1415C
Bouncing Ball
brute force
,
dp
,
implementation
1400
x10823
1408B
Arrays Sum
constructive algorithms
,
greedy
,
math
1400
x9906
1393B
Applejack and Storages
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x16616
1380C
Create The Teams
brute force
,
dp
,
greedy
,
implementation
,
sortings
1400
x20540
1380B
Universal Solution
greedy
1400
x14546
1375C
Element Extermination
constructive algorithms
,
data structures
,
greedy
1400
x20999
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x23421
1370C
Number Game
games
,
math
,
number theory
1400
x24361
1369C
RationalLee
greedy
,
math
,
sortings
,
two pointers
1400
x19486
1365C
Rotation Matching
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x22944
1363B
Subsequence Hate
implementation
,
strings
1400
x23460
1362C
Johnny and Another Rating Drop
bitmasks
,
greedy
,
math
1400
x18044
1355D
Game With Array
constructive algorithms
,
math
1400
x17932
1354C1
Simple Polygon Embedding
binary search
,
geometry
,
math
,
ternary search
1400
x15631
1351C
Skier
data structures
,
implementation
1400
x8504
1350B
Orac and Models
dp
,
math
,
number theory
1400
x21821
1348B
Phoenix and Beauty
constructive algorithms
,
data structures
,
greedy
,
sortings
1400
x25171
1346B
Boot Camp
*special problem
,
greedy
1400
x1202
1332B
Composite Coloring
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1400
x17510
1330B
Dreamoon Likes Permutations
implementation
,
math
1400
x13986
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x27877
1320A
Journey Planning
data structures
,
dp
,
greedy
,
math
,
sortings
1400
x16151
1316B
String Modification
brute force
,
constructive algorithms
,
implementation
,
sortings
,
strings
1400
x11230
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x16363
1303B
National Project
math
1400
x15675
1292A
NEKO's Maze Game
data structures
,
dsu
,
implementation
1400
x13285
1285C
Fadi and LCM
brute force
,
math
,
number theory
1400
x23063
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10806
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11434
1279C
Stack of Presents
data structures
,
implementation
1400
x11651
1276A
As Simple as One and Two
dp
,
greedy
1400
x12269
1270C
Make Good
bitmasks
,
constructive algorithms
,
math
1400
x14004
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9665
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x13625
1263B
PIN Codes
greedy
,
implementation
1400
x11324
1256B
Minimize the Permutation
greedy
1400
x13046
1253B
Silly Mistake
greedy
,
implementation
1400
x11160
1251B
Binary Palindromes
greedy
,
strings
1400
x10948
1250A
Berstagram
implementation
1400
x4065
1245C
Constanze's Machine
dp
1400
x17374
1228B
Filling the Grid
implementation
,
math
1400
x11496
1215B
The Number of Products
combinatorics
,
dp
,
implementation
1400
x12742
1214A
Optimal Currency Exchange
brute force
,
math
1400
x9074
1201C
Maximum Median
binary search
,
greedy
,
math
,
sortings
1400
x22916
1200C
Round Corridor
math
,
number theory
1400
x9794
1197C
Array Splitting
greedy
,
sortings
1400
x13816
1195C
Basketball Exercise
dp
1400
x25337
1190A
Tokitsukaze and Discard Items
implementation
,
two pointers
1400
x9329
1189C
Candies!
data structures
,
dp
,
implementation
,
math
1400
x10523
1184B1
The Doctor Meets Vader (Easy)
binary search
,
sortings
1400
x5198
1183D
Candy Box (easy version)
greedy
,
sortings
1400
x14016
1183C
Computer Game
binary search
,
math
1400
x13892
1167C
News Distribution
dfs and similar
,
dsu
,
graphs
1400
x18014
1167B
Lost Numbers
brute force
,
divide and conquer
,
interactive
,
math
1400
x11418
1162B
Double Matrix
brute force
,
greedy
1400
x5793
1156A
Inscribed Figures
geometry
1400
x8173
1154C
Gourmet Cat
implementation
,
math
1400
x10337
1144D
Equalize Them All
constructive algorithms
,
greedy
1400
x10200
1143C
Queen
dfs and similar
,
trees
1400
x12075
1131B
Draw!
greedy
,
implementation
1400
x9695
1130C
Connect
brute force
,
dfs and similar
,
dsu
1400
x8514
1110B
Tape
greedy
,
sortings
1400
x11343
1108D
Diverse Garland
constructive algorithms
,
dp
,
greedy
1400
x14950
1103A
Grid game
constructive algorithms
,
implementation
1400
x9725
1102B
Array K-Coloring
greedy
,
sortings
1400
x10325
1097C
Yuhao and a Parenthesis
greedy
,
implementation
1400
x8423
1095C
Powers Of Two
bitmasks
,
greedy
1400
x16560
1091C
New Year and the Sphere Transmission
math
,
number theory
1400
x9936
1088C
Ehab and a 2-operation task
constructive algorithms
,
greedy
,
math
1400
x8033
1068A
Birthday
math
1400
x6760
1066C
Books Queries
implementation
1400
x9563
1061B
Views Matter
greedy
,
implementation
,
sortings
1400
x7274
1057B
DDoS
*special problem
,
brute force
1400
x1818
←
1
2
3
4
→
User lists
Name