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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
30:04:55
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→ Filter Problems
Difficulty:
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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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Custom test
Problems
#
Name
731F
Video Cards
brute force
,
data structures
,
implementation
,
math
,
number theory
1900
x2741
830B
Cards Sorting
data structures
,
implementation
,
sortings
1600
x2739
1029E
Tree with Small Distances
dp
,
graphs
,
greedy
2100
x2737
1547G
How Many Paths?
dfs and similar
,
dp
,
graphs
,
trees
2100
x2735
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2734
1734E
Rectangular Congruence
constructive algorithms
,
number theory
2100
x2730
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2730
629C
Famil Door and Brackets
dp
,
strings
2000
x2726
606B
Testing Robots
implementation
1600
x2723
1156E
Special Segments of Permutation
data structures
,
divide and conquer
,
dsu
,
two pointers
2200
x2721
840D
Destiny
data structures
,
probabilities
2500
x2721
1271D
Portals
data structures
,
dp
,
greedy
,
implementation
,
sortings
2100
x2720
132A
Turing Tape
implementation
1300
x2719
1046F
Splitting money
implementation
1400
x2718
1860D
Balanced String
dp
2200
x2717
768D
Jon and Orbs
dp
,
math
,
probabilities
2200
x2716
125B
Simple XML
implementation
1000
x2714
187A
Permutations
greedy
1500
x2709
1943B
Non-Palindromic Substring
hashing
,
implementation
,
math
,
strings
2000
x2708
1884D
Counting Rhyme
dp
,
math
,
number theory
2100
x2707
770B
Maximize Sum of Digits
*special problem
,
implementation
,
math
1300
x2707
190C
STL
dfs and similar
1500
x2700
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2698
1238E
Keyboard Purchase
bitmasks
,
dp
2200
x2697
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x2697
353D
Queue
constructive algorithms
,
dp
2000
x2696
621E
Wet Shark and Blocks
dp
,
matrices
2000
x2694
113B
Petr#
brute force
,
data structures
,
hashing
,
strings
2000
x2692
172B
Pseudorandom Sequence Period
*special problem
,
implementation
,
number theory
1200
x2683
1926G
Vlad and Trouble at MIT
dfs and similar
,
dp
,
flows
,
graphs
,
greedy
,
implementation
,
trees
1900
x2680
963B
Destruction of a Tree
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x2680
758D
Ability To Convert
constructive algorithms
,
dp
,
greedy
,
math
,
strings
2000
x2678
645D
Robot Rapping Results Report
binary search
,
dp
,
graphs
1800
x2678
1043E
Train Hard, Win Easy
constructive algorithms
,
greedy
,
math
,
sortings
1900
x2675
351A
Jeff and Rounding
dp
,
greedy
,
implementation
,
math
1800
x2674
360B
Levko and Array
binary search
,
dp
2000
x2673
1373E
Sum of Digits
brute force
,
constructive algorithms
,
dp
,
greedy
2200
x2671
547C
Mike and Foam
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
2300
x2671
525E
Anya and Cubes
binary search
,
bitmasks
,
brute force
,
dp
,
math
,
meet-in-the-middle
2100
x2668
383E
Vowels
combinatorics
,
divide and conquer
,
dp
2700
x2666
1147B
Chladni Figure
brute force
,
strings
1900
x2664
690C1
Brain Network (easy)
1300
x2664
839D
Winter is here
combinatorics
,
dp
,
math
,
number theory
2200
x2663
128C
Games with Rectangle
combinatorics
,
dp
2000
x2663
27C
Unordered Subsequence
constructive algorithms
,
greedy
1900
x2663
899D
Shovel Sale
constructive algorithms
,
math
1800
x2662
725D
Contest Balloons
data structures
,
greedy
1800
x2659
817E
Choosing The Commander
bitmasks
,
data structures
,
trees
2000
x2656
626F
Group Projects
dp
2400
x2656
847E
Packmen
binary search
,
dp
1800
x2653
95C
Volleyball
shortest paths
1900
x2651
264C
Choosing Balls
dp
2000
x2649
380A
Sereja and Prefixes
binary search
,
brute force
1600
x2642
64A
Factorial
*special problem
,
implementation
1300
x2642
154C
Double Profiles
graphs
,
hashing
,
sortings
2300
x2641
626D
Jerry's Protest
brute force
,
combinatorics
,
dp
,
probabilities
1800
x2640
932E
Team Work
combinatorics
,
dp
,
math
2400
x2639
1806E
Tree Master
brute force
,
data structures
,
dfs and similar
,
trees
2200
x2637
960F
Pathwalks
data structures
,
dp
,
graphs
2100
x2637
374C
Inna and Dima
dfs and similar
,
dp
,
graphs
,
implementation
1900
x2636
120E
Put Knight!
games
,
math
1400
x2635
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2633
1166E
The LCMs Must be Large
bitmasks
,
brute force
,
constructive algorithms
,
math
,
number theory
2100
x2633
1037E
Trips
graphs
2200
x2633
627B
Factory Repairs
data structures
1700
x2633
394A
Counting Sticks
brute force
,
implementation
x2633
1551D2
Domino (hard version)
constructive algorithms
,
implementation
,
math
2100
x2632
292A
SMSC
implementation
1100
x2630
1748D
ConstructOR
bitmasks
,
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
math
,
number theory
2100
x2626
715B
Complete The Graph
binary search
,
constructive algorithms
,
graphs
,
shortest paths
2300
x2624
125A
Measuring Lengths in Baden
math
1400
x2621
616E
Sum of Remainders
implementation
,
math
,
number theory
2200
x2620
1051F
The Shortest Statement
graphs
,
shortest paths
,
trees
2400
x2619
1671E
Preorder
combinatorics
,
divide and conquer
,
dp
,
dsu
,
hashing
,
sortings
,
trees
2100
x2618
1032D
Barcelonian Distance
geometry
,
implementation
1900
x2617
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2616
785D
Anton and School - 2
combinatorics
,
dp
,
math
,
number theory
2300
x2616
213C
Relay Race
dp
2000
x2613
1031D
Minimum path
greedy
1900
x2609
768E
Game of Stones
bitmasks
,
dp
,
games
2100
x2609
1296F
Berland Beauty
constructive algorithms
,
dfs and similar
,
greedy
,
sortings
,
trees
2100
x2606
1142B
Lynyrd Skynyrd
data structures
,
dfs and similar
,
dp
,
math
,
trees
2000
x2601
846C
Four Segments
brute force
,
data structures
,
dp
1800
x2601
362A
Two Semiknights Meet
greedy
,
math
1500
x2600
630G
Challenge Pennants
combinatorics
,
math
1600
x2599
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2597
613D
Kingdom and its Cities
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
sortings
,
trees
2800
x2594
333B
Chips
greedy
1800
x2594
1154G
Minimum Possible LCM
brute force
,
greedy
,
math
,
number theory
2200
x2592
163A
Substring and Subsequence
dp
1700
x2592
590C
Three States
dfs and similar
,
graphs
,
shortest paths
2200
x2591
644B
Processing Queries
*special problem
,
constructive algorithms
,
data structures
,
two pointers
1700
x2590
39H
Multiplication Table
implementation
1300
x2589
1253E
Antenna Coverage
data structures
,
dp
,
greedy
,
sortings
2200
x2587
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2587
1764D
Doremy's Pegging Game
combinatorics
,
dp
,
math
2000
x2586
1887B
Time Travel
binary search
,
graphs
,
shortest paths
1900
x2585
48B
Land Lot
brute force
,
implementation
1200
x2584
1252H
Twin Buildings
greedy
,
implementation
1800
x2582
675E
Trains and Statistic
data structures
,
dp
,
greedy
2300
x2581
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