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2024-2025 ICPC, NERC, Southern and Volga Russian Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams)
31:42:49
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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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Problems
#
Name
446E
DZY Loves Bridges
math
,
matrices
3100
x134
446D
DZY Loves Games
math
,
matrices
,
probabilities
2800
x395
446C
DZY Loves Fibonacci Numbers
data structures
,
math
,
number theory
2400
x3363
446B
DZY Loves Modification
brute force
,
data structures
,
greedy
2000
x3598
446A
DZY Loves Sequences
dp
,
implementation
,
two pointers
1600
x12592
445B
DZY Loves Chemistry
dfs and similar
,
dsu
,
greedy
1400
x12772
445A
DZY Loves Chessboard
dfs and similar
,
implementation
1200
x29925
444E
DZY Loves Planting
binary search
,
dsu
,
trees
2700
x777
444D
DZY Loves Strings
binary search
,
hashing
,
strings
,
two pointers
2500
x780
444C
DZY Loves Colors
data structures
2400
x2941
444B
DZY Loves FFT
probabilities
2300
x1069
444A
DZY Loves Physics
greedy
,
math
1600
x3426
443B
Kolya and Tandem Repeat
brute force
,
implementation
,
strings
1500
x4066
443A
Anton and Letters
constructive algorithms
,
implementation
800
x90673
442E
Gena and Second Distance
geometry
3100
x173
442D
Adam and Tree
data structures
,
trees
2600
x999
442C
Artem and Array
data structures
,
greedy
2500
x1804
442B
Andrey and Problem
greedy
,
math
,
probabilities
1800
x5273
442A
Borya and Hanabi
bitmasks
,
brute force
,
implementation
1700
x2151
441E
Valera and Number
bitmasks
,
dp
,
math
,
probabilities
2400
x708
441D
Valera and Swaps
constructive algorithms
,
dsu
,
graphs
,
implementation
,
math
,
string suffix structures
2100
x1112
441C
Valera and Tubes
constructive algorithms
,
dfs and similar
,
implementation
1500
x11237
441B
Valera and Fruits
greedy
,
implementation
1400
x7101
441A
Valera and Antique Items
implementation
1000
x18534
440D
Berland Federalization
dp
,
trees
2200
x703
440C
One-Based Arithmetic
brute force
,
dfs and similar
,
divide and conquer
1800
x921
440B
Balancer
greedy
,
implementation
1600
x1986
440A
Forgotten Episode
implementation
800
x7439
439E
Devu and Birthday Celebration
combinatorics
,
dp
,
math
2100
x1572
439D
Devu and his Brother
binary search
,
sortings
,
ternary search
,
two pointers
1700
x6123
439C
Devu and Partitioning of the Array
brute force
,
constructive algorithms
,
implementation
,
number theory
1700
x3928
439B
Devu, the Dumb Guy
implementation
,
sortings
1200
x14384
439A
Devu, the Singer and Churu, the Joker
greedy
,
implementation
900
x25376
438E
The Child and Binary Tree
combinatorics
,
divide and conquer
,
fft
,
number theory
3100
x1891
438D
The Child and Sequence
data structures
,
math
2300
x8726
437E
The Child and Polygon
dp
,
geometry
2500
x707
437D
The Child and Zoo
dsu
,
sortings
1900
x3391
437C
The Child and Toy
graphs
,
greedy
,
sortings
1400
x13994
437B
The Child and Set
bitmasks
,
greedy
,
implementation
,
sortings
1500
x9551
437A
The Child and Homework
implementation
1300
x9045
436F
Banners
brute force
,
data structures
,
dp
3000
x397
436E
Cardboard Box
data structures
,
greedy
2600
x1384
436D
Pudding Monsters
dp
2800
x326
436C
Dungeons and Candies
dsu
,
graphs
,
greedy
,
trees
1800
x2678
436B
Om Nom and Spiders
implementation
,
math
1400
x3056
436A
Feed with Candy
greedy
1500
x3481
435E
Special Graph
2500
x244
435D
Special Grid
brute force
,
dp
,
greedy
2000
x761
435C
Cardiogram
implementation
1600
x2579
435B
Pasha Maximizes
greedy
1400
x7037
435A
Queue on Bus Stop
implementation
1000
x10187
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x273
434D
Nanami's Power Plant
flows
2900
x467
433E
Tachibana Kanade's Tofu
dp
2500
x481
433D
Nanami's Digital Board
dsu
,
implementation
2000
x1243
433C
Ryouko's Memory Note
implementation
,
math
,
sortings
1800
x2488
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x40241
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x16433
432E
Square Tiling
constructive algorithms
,
greedy
2300
x701
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x9220
432C
Prime Swaps
greedy
,
sortings
1800
x2522
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11702
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x60482
431E
Chemistry Experiment
binary search
,
data structures
,
ternary search
2200
x1022
431D
Random Task
binary search
,
bitmasks
,
combinatorics
,
dp
,
math
2100
x2320
431C
k-Tree
dp
,
implementation
,
trees
1600
x25787
431B
Shower Line
brute force
,
implementation
1200
x10846
431A
Black Square
implementation
800
x55498
430B
Balls Game
brute force
,
two pointers
1400
x3728
430A
Points and Segments (easy)
constructive algorithms
,
sortings
1600
x2250
429E
Points and Segments
graphs
3000
x889
429D
Tricky Function
data structures
,
divide and conquer
,
geometry
2200
x2947
429C
Guess the Tree
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
trees
2300
x952
429B
Working out
dp
1600
x8723
429A
Xor-tree
dfs and similar
,
trees
1300
x10414
427E
Police Patrol
greedy
,
implementation
,
math
,
ternary search
2000
x1433
427D
Match & Catch
dp
,
string suffix structures
,
strings
2200
x2215
427C
Checkposts
dfs and similar
,
graphs
,
two pointers
1700
x14065
427B
Prison Transfer
data structures
,
implementation
1100
x14094
427A
Police Recruits
implementation
800
x79122
426B
Sereja and Mirroring
implementation
1300
x3806
426A
Sereja and Mugs
implementation
800
x9249
425E
Sereja and Sets
dp
2500
x646
425D
Sereja and Squares
binary search
,
data structures
,
hashing
2300
x1460
425C
Sereja and Two Sequences
data structures
,
dp
2300
x904
425B
Sereja and Table
bitmasks
,
greedy
2200
x1313
425A
Sereja and Swaps
brute force
,
sortings
1500
x3911
424E
Colored Jenga
dfs and similar
,
dp
,
probabilities
2500
x134
424D
Biathlon Track
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
2300
x567
424C
Magic Formulas
math
1600
x5432
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x7765
424A
Squats
implementation
900
x8503
421D
Bug in Code
binary search
,
data structures
,
sortings
1900
x541
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x6097
420E
Playing the ball
geometry
2600
x218
420D
Cup Trick
data structures
2200
x843
420C
Bug in Code
data structures
,
graphs
,
implementation
,
two pointers
1900
x1264
420B
Online Meeting
implementation
1800
x1045
420A
Start Up
implementation
1000
x6241
418E
Tricky Password
data structures
3100
x316
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