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Codeforces Round 946 (Div. 3)
3 days
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Difficulty:
—
implementation
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
#
Name
1293A
ConneR and the A.R.C. Markland-N
binary search
,
brute force
,
implementation
1100
x14982
1957B
A BIT of a Construction
bitmasks
,
constructive algorithms
,
greedy
,
implementation
1100
x15127
242B
Big Segment
implementation
,
sortings
1100
x15223
1157A
Reachable Numbers
implementation
1100
x15403
719A
Vitya in the Countryside
implementation
1100
x15413
43B
Letter
implementation
,
strings
1100
x15756
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15780
218B
Airport
implementation
1100
x15781
1762B
Make Array Good
constructive algorithms
,
implementation
,
number theory
,
sortings
1100
x16209
186A
Comparing Strings
implementation
,
strings
1100
x16245
1923B
Monsters Attack!
dp
,
greedy
,
implementation
1100
x16258
166A
Rank List
binary search
,
implementation
,
sortings
1100
x16806
1304B
Longest Palindrome
brute force
,
constructive algorithms
,
greedy
,
implementation
,
strings
1100
x17442
365A
Good Number
implementation
1100
x17504
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x17756
1675C
Detective Task
implementation
1100
x17766
1579B
Shifting Sort
implementation
,
sortings
1100
x17825
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17892
799A
Carrot Cakes
brute force
,
implementation
1100
x18005
1899B
250 Thousand Tons of TNT
brute force
,
implementation
,
number theory
1100
x18189
1606B
Update Files
greedy
,
implementation
,
math
1100
x18267
1700B
Palindromic Numbers
constructive algorithms
,
implementation
,
math
1100
x18275
1829E
The Lakes
dfs and similar
,
dsu
,
graphs
,
implementation
1100
x18294
1971D
Binary Cut
dp
,
greedy
,
implementation
,
sortings
,
strings
1100
x18654
1692D
The Clock
brute force
,
implementation
1100
x18779
287A
IQ Test
brute force
,
implementation
1100
x18858
1481B
New Colony
brute force
,
greedy
,
implementation
1100
x19035
1471B
Strange List
brute force
,
greedy
,
implementation
,
math
1100
x19130
1332A
Exercising Walk
greedy
,
implementation
,
math
1100
x19145
1788B
Sum of Two Numbers
constructive algorithms
,
greedy
,
implementation
,
math
,
probabilities
1100
x19291
767A
Snacktower
data structures
,
implementation
1100
x19298
66B
Petya and Countryside
brute force
,
implementation
1100
x19553
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x19704
1506B
Partial Replacement
greedy
,
implementation
1100
x19912
1950D
Product of Binary Decimals
brute force
,
dp
,
implementation
,
number theory
1100
x20492
1948B
Array Fix
brute force
,
dp
,
greedy
,
implementation
1100
x20565
1933C
Turtle Fingers: Count the Values of k
brute force
,
implementation
,
math
,
number theory
1100
x20608
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x20971
1669D
Colorful Stamp
implementation
1100
x21146
1333B
Kind Anton
greedy
,
implementation
1100
x21281
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21679
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x21935
1857B
Maximum Rounding
greedy
,
implementation
,
math
1100
x22163
1511C
Yet Another Card Deck
brute force
,
data structures
,
implementation
,
trees
1100
x22249
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x22264
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x22519
1365A
Matrix Game
games
,
greedy
,
implementation
1100
x23590
478A
Initial Bet
implementation
1100
x25035
1213B
Bad Prices
data structures
,
implementation
1100
x25662
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x25897
227B
Effective Approach
implementation
1100
x26501
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x26944
1324C
Frog Jumps
binary search
,
data structures
,
dfs and similar
,
greedy
,
implementation
1100
x26946
349A
Cinema Line
greedy
,
implementation
1100
x28755
82A
Double Cola
implementation
,
math
1100
x29475
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x33341
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x36056
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x37808
313B
Ilya and Queries
dp
,
implementation
1100
x41620
270A
Fancy Fence
geometry
,
implementation
,
math
1100
x43551
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58621
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82647
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1107
1211A
Three Problems
*special problem
,
implementation
1000
x1276
1769B1
Копирование файлов I
*special problem
,
brute force
,
implementation
,
math
1000
x1315
1970A1
Balanced Shuffle (Easy)
implementation
,
sortings
1000
x2104
125B
Simple XML
implementation
1000
x2760
491A
Up the hill
constructive algorithms
,
implementation
1000
x2823
958B1
Maximum Control (easy)
implementation
1000
x3324
120A
Elevator
brute force
,
implementation
,
math
1000
x4504
74A
Room Leader
implementation
1000
x4940
660B
Seating On Bus
implementation
1000
x5227
637A
Voting for Photos
*special problem
,
constructive algorithms
,
implementation
1000
x5316
1177A
Digits Sequence (Easy Edition)
implementation
1000
x5494
641A
Little Artem and Grasshopper
implementation
1000
x5814
420A
Start Up
implementation
1000
x5889
106B
Choosing Laptop
brute force
,
implementation
1000
x5943
371A
K-Periodic Array
greedy
,
implementation
,
math
1000
x5951
1090M
The Pleasant Walk
implementation
1000
x6024
626A
Robot Sequence
brute force
,
implementation
1000
x6147
628A
Tennis Tournament
implementation
,
math
1000
x6181
847M
Weather Tomorrow
implementation
,
math
1000
x6186
400A
Inna and Choose Options
implementation
1000
x6403
1054B
Appending Mex
implementation
1000
x6450
35A
Shell Game
implementation
1000
x6624
284B
Cows and Poker Game
brute force
,
implementation
1000
x6672
14B
Young Photographer
implementation
1000
x6677
357A
Group of Students
brute force
,
greedy
,
implementation
1000
x6700
182B
Vasya's Calendar
implementation
1000
x6801
724A
Checking the Calendar
implementation
1000
x6999
725A
Jumping Ball
implementation
1000
x7017
368A
Sereja and Coat Rack
implementation
1000
x7375
13A
Numbers
implementation
,
math
1000
x7376
106A
Card Game
implementation
1000
x7425
920A
Water The Garden
implementation
1000
x7607
1084A
The Fair Nut and Elevator
brute force
,
implementation
1000
x7821
452A
Eevee
brute force
,
implementation
,
strings
1000
x7905
127B
Canvas Frames
implementation
1000
x8223
56A
Bar
implementation
1000
x8344
359A
Table
constructive algorithms
,
greedy
,
implementation
1000
x8383
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