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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 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
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Problems
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Custom test
Problems
#
Name
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x139
683F
Reformat the String
*special problem
1800
x146
1958F
Narrow Paths
*special problem
,
combinatorics
2000
x147
530G
Levenshtein distance
*special problem
2100
x147
470D
Caesar Cipher
*special problem
1900
x147
72E
Ali goes shopping
*special problem
,
brute force
,
strings
1800
x150
153B
Binary notation
*special problem
1800
x151
1431F
Neural Network Problem
*special problem
,
binary search
,
greedy
2100
x155
1910F
Build Railway Stations
*special problem
,
greedy
,
trees
2000
x163
130I
Array sorting
*special problem
,
sortings
2300
x164
1488F
Dogecoin
*special problem
,
*special problem
,
binary search
,
data structures
2300
x168
774G
Perfectionist Arkadiy
*special problem
,
number theory
2700
x173
162E
HQ9+
*special problem
1800
x174
1940B
Three Arrays
*special problem
,
constructive algorithms
,
implementation
,
sortings
x175
1910E
Maximum Sum Subarrays
*special problem
,
dp
2100
x175
64F
Domain
*special problem
,
expression parsing
2000
x175
1571F
Kotlinforces
*special problem
,
constructive algorithms
,
dp
2000
x177
72A
Goshtasp, Vishtasp and Eidi
*special problem
,
greedy
,
math
1800
x181
470H
Array Sorting
*special problem
2300
x184
1769D2
Игра в Девятку II
*special problem
,
brute force
2200
x187
683E
Hammer throwing
*special problem
1800
x187
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x188
470E
Chessboard
*special problem
1900
x192
162F
Factorial zeros
*special problem
1800
x195
1115U3
Block unitary
*special problem
1700
x196
290E
HQ
*special problem
,
constructive algorithms
2500
x196
1958E
Yet Another Permutation Constructive
*special problem
,
constructive algorithms
1900
x198
1402C
Star Trek
*special problem
,
combinatorics
,
dfs and similar
,
dp
,
games
,
graphs
,
matrices
,
trees
2600
x198
1297E
Modernization of Treeland
*special problem
,
dfs and similar
,
trees
x199
1663G
Six Characters
*special problem
,
constructive algorithms
,
strings
x204
1488E
Palindromic Doubles
*special problem
,
data structures
,
dp
2200
x206
774E
Big Number and Remainder
*special problem
,
math
,
number theory
2300
x206
1939B
Evidence Board
*special problem
,
constructive algorithms
,
dfs and similar
,
graphs
,
trees
x209
1533F
Binary String Partition
*special problem
,
binary search
,
greedy
x212
162H
Alternating case
*special problem
1800
x213
1532F
Prefixes and Suffixes
*special problem
,
strings
x216
774B
Significant Cups
*special problem
,
binary search
,
data structures
,
two pointers
2100
x216
1431E
Chess Match
*special problem
2000
x219
1346F
Dune II: Battle For Arrakis
*special problem
,
data structures
,
greedy
,
math
2000
x219
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x224
661B
Seasons
*special problem
1900
x224
1115G3
Palindrome checker oracle
*special problem
1600
x225
162D
Remove digits
*special problem
1900
x225
1115U2
Chessboard unitary
*special problem
1600
x229
661F
Primes in Interval
*special problem
1900
x231
470C
Eval
*special problem
1900
x232
64E
Prime Segment
*special problem
,
brute force
,
math
,
number theory
1800
x234
1193A
Amusement Park
*special problem
,
dp
,
math
x239
188H
Stack
*special problem
,
expression parsing
,
implementation
1800
x244
1386A
Colors
*special problem
,
binary search
,
constructive algorithms
,
interactive
2700
x251
1115U1
Anti-diagonal unitary
*special problem
1500
x251
470B
Hexakosioihexekontahexaphobia
*special problem
1800
x252
1812I
Mountain Climber
*special problem
x254
1275E1
Контрольная сумма
*special problem
x254
1170E
Sliding Doors
*special problem
,
binary search
x254
774H
Repairing Of String
*special problem
,
constructive algorithms
2200
x254
1297D
Bonus Distribution
*special problem
,
binary search
,
greedy
,
sortings
x259
72H
Reverse It!
*special problem
,
implementation
1600
x259
171H
A polyline
*special problem
,
implementation
1700
x266
100E
Lamps in a Line
*special problem
,
math
1600
x266
1531E3
Сортировка слиянием
*special problem
,
binary search
x267
172E
BHTML+BCSS
*special problem
,
dfs and similar
,
expression parsing
2200
x268
1533E
Chess Team Forming
*special problem
,
binary search
,
data structures
,
greedy
x272
130F
Prime factorization
*special problem
1600
x272
130G
CAPS LOCK ON
*special problem
1700
x273
1939C
More Gifts
*special problem
,
dfs and similar
,
two pointers
x275
1356B2
Decrement
*special problem
x279
1356B1
Increment
*special problem
x279
64D
Presents
*special problem
,
greedy
1800
x281
1403A
The Potion of Great Power
*special problem
,
2-sat
,
binary search
,
data structures
,
graphs
,
interactive
,
sortings
,
two pointers
2400
x286
188F
Binary Notation
*special problem
,
implementation
1400
x288
1505G
Encoded message
*special problem
,
implementation
2600
x292
130E
Tribonacci numbers
*special problem
1600
x292
774A
Amusement Park
*special problem
,
ternary search
2100
x294
100D
World of Mouth
*special problem
,
strings
1500
x297
1356C
Prepare state |01⟩ + |10⟩ + |11⟩
*special problem
x299
530E
Sum and product
*special problem
1700
x302
1115G2
OR oracle
*special problem
1600
x307
162B
Binary notation
*special problem
1800
x308
1910D
Remove and Add
*special problem
,
greedy
1800
x313
683C
Symmetric Difference
*special problem
1600
x314
683B
The Teacher of Physical Education
*special problem
1600
x316
683D
Chocolate Bar
*special problem
,
math
1400
x319
1571D
Sweepstake
*special problem
,
brute force
,
constructive algorithms
,
implementation
,
math
1800
x320
1192C
Cubeword
*special problem
,
brute force
,
dp
,
meet-in-the-middle
x322
774L
Bars
*special problem
,
binary search
2000
x323
130J
Date calculation
*special problem
1800
x323
1571E
Fix the String
*special problem
,
bitmasks
,
dp
,
greedy
1700
x325
188G
Array Sorting
*special problem
,
implementation
1600
x325
1356A5
Distinguish Z from -Z
*special problem
x327
1663F
In Every Generation...
*special problem
,
strings
x328
1531E2
Сортировка слиянием
*special problem
,
*special problem
,
brute force
x331
1488D
Problemsolving Marathon
*special problem
,
binary search
,
greedy
1900
x331
64C
Table
*special problem
,
greedy
,
implementation
,
math
1600
x331
1958D
Staircase
*special problem
1600
x338
100I
Rotation
*special problem
,
geometry
,
math
1500
x340
1531D
Редактируем Зингер | color
*special problem
,
*special problem
x351
774J
Stepan's Series
*special problem
,
dp
2000
x353
1531E1
Сортировка слиянием
*special problem
x356
1403B
Spring cleaning
*special problem
,
data structures
,
dfs and similar
,
graphs
,
trees
2300
x358
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