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2023 Post World Finals Online ICPC Challenge powered by Huawei
23:42:06
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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
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number theory
probabilities
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shortest paths
sortings
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strings
ternary search
trees
two pointers
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Problems
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Name
1002D2
Oracle for f(x) = b * x + (1 - b) * (1 - x) mod 2
1300
x371
1002B1
Distinguish zero state and W state
1300
x471
1001F
Distinguish multi-qubit basis states
*special problem
1300
x531
1002A2
Generate superposition of zero state and a basis state
1300
x550
661A
Lazy Caterer Sequence
*special problem
1300
x627
1571B
Epic Novel
*special problem
,
math
1300
x676
188B
A + Reverse B
*special problem
,
implementation
1300
x703
1769C2
Подкрутка II
*special problem
,
dp
1300
x912
39F
Pacifist frogs
implementation
1300
x1485
413B
Spyke Chatting
implementation
1300
x1671
85A
Domino
constructive algorithms
,
implementation
1300
x1756
51A
Cheaterius's Problem
implementation
1300
x1778
117A
Elevator
implementation
,
math
1300
x1973
54A
Presents
implementation
1300
x2004
238A
Not Wool Sequences
constructive algorithms
,
math
1300
x2005
929B
Места в самолёте
*special problem
,
implementation
1300
x2037
690F1
Tree of Life (easy)
1300
x2109
173A
Rock-Paper-Scissors
implementation
,
math
1300
x2198
241A
Old Peykan
greedy
1300
x2202
883F
Lost in Transliteration
implementation
1300
x2233
370B
Berland Bingo
implementation
1300
x2471
171D
Broken checker
*special problem
,
brute force
1300
x2510
203B
Game on Paper
brute force
,
implementation
1300
x2550
39B
Company Income Growth
greedy
1300
x2558
39H
Multiplication Table
implementation
1300
x2606
690C1
Brain Network (easy)
1300
x2683
64A
Factorial
*special problem
,
implementation
1300
x2696
770B
Maximize Sum of Digits
*special problem
,
implementation
,
math
1300
x2723
132A
Turing Tape
implementation
1300
x2732
57A
Square Earth?
dfs and similar
,
greedy
,
implementation
1300
x2813
181B
Number of Triplets
binary search
,
brute force
1300
x2891
36A
Extra-terrestrial Intelligence
implementation
1300
x2894
99B
Help Chef Gerasim
implementation
,
sortings
1300
x2895
730H
Delete Them
constructive algorithms
,
implementation
1300
x2918
304B
Calendar
brute force
,
implementation
1300
x2918
291B
Command Line Arguments
*special problem
,
implementation
,
strings
1300
x3012
634A
Island Puzzle
constructive algorithms
,
implementation
1300
x3086
44C
Holidays
implementation
1300
x3204
70A
Cookies
math
1300
x3219
62A
A Student's Dream
greedy
,
math
1300
x3362
673B
Problems for Round
greedy
,
implementation
1300
x3496
123A
Prime Permutation
implementation
,
number theory
,
strings
1300
x3515
332A
Down the Hatch!
implementation
1300
x3523
60A
Where Are My Flakes?
implementation
,
two pointers
1300
x3523
807B
T-Shirt Hunt
brute force
,
implementation
1300
x3526
147A
Punctuation
implementation
,
strings
1300
x3553
56B
Spoilt Permutation
implementation
1300
x3615
41C
Email address
expression parsing
,
implementation
1300
x3636
926A
2-3-numbers
implementation
,
math
1300
x3673
426B
Sereja and Mirroring
implementation
1300
x3766
61B
Hard Work
strings
1300
x3782
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3841
189B
Counting Rhombi
brute force
,
math
1300
x3868
171B
Star
*special problem
,
combinatorics
1300
x3938
311A
The Closest Pair
constructive algorithms
,
implementation
1300
x3994
1090A
Company Merging
greedy
1300
x4035
227A
Where do I Turn?
geometry
1300
x4037
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4068
1425H
Huge Boxes of Animal Toys
constructive algorithms
1300
x4074
43C
Lucky Tickets
greedy
1300
x4141
146B
Lucky Mask
brute force
,
implementation
1300
x4225
964B
Messages
math
1300
x4304
71B
Progress Bar
implementation
,
math
1300
x4358
965B
Battleship
implementation
1300
x4479
747C
Servers
implementation
1300
x4486
94B
Friends
graphs
,
implementation
,
math
1300
x4490
221B
Little Elephant and Numbers
implementation
1300
x4499
630N
Forecast
math
1300
x4506
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4677
92B
Binary Number
greedy
1300
x4696
526A
King of Thieves
brute force
,
implementation
1300
x4724
1070D
Garbage Disposal
greedy
1300
x4849
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x4887
1055B
Alice and Hairdresser
dsu
,
implementation
1300
x4893
924A
Mystical Mosaic
greedy
,
implementation
1300
x4907
144B
Meeting
implementation
1300
x5032
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5080
378B
Semifinals
implementation
,
sortings
1300
x5100
586B
Laurenty and Shop
implementation
1300
x5113
195B
After Training
data structures
,
implementation
,
math
1300
x5120
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x5137
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5181
234C
Weather
dp
,
implementation
1300
x5327
215B
Olympic Medal
greedy
,
math
1300
x5359
886C
Petya and Catacombs
dsu
,
greedy
,
implementation
,
trees
1300
x5428
887B
Cubes for Masha
brute force
,
implementation
1300
x5529
814B
An express train to reveries
constructive algorithms
1300
x5547
907A
Masha and Bears
brute force
,
implementation
1300
x5557
787B
Not Afraid
greedy
,
implementation
,
math
1300
x5568
821B
Okabe and Banana Trees
brute force
,
math
1300
x5636
1424G
Years
data structures
,
sortings
1300
x5640
828B
Black Square
implementation
1300
x5650
957A
Tritonic Iridescence
implementation
1300
x5659
976B
Lara Croft and the New Game
implementation
,
math
1300
x5663
628C
Bear and String Distance
greedy
,
strings
1300
x5675
185A
Plant
math
1300
x5689
471B
MUH and Important Things
implementation
,
sortings
1300
x5884
792B
Counting-out Rhyme
implementation
1300
x5896
222B
Cosmic Tables
data structures
,
implementation
1300
x5982
1776H
Beppa and SwerChat
two pointers
1300
x5999
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