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Problems
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Name
1002D2
Oracle for f(x) = b * x + (1 - b) * (1 - x) mod 2
1300
x372
1002B1
Distinguish zero state and W state
1300
x472
1001F
Distinguish multi-qubit basis states
*special problem
1300
x532
1002A2
Generate superposition of zero state and a basis state
1300
x551
661A
Lazy Caterer Sequence
*special problem
1300
x629
1571B
Epic Novel
*special problem
,
math
1300
x684
188B
A + Reverse B
*special problem
,
implementation
1300
x703
1769C2
Подкрутка II
*special problem
,
dp
1300
x916
39F
Pacifist frogs
implementation
1300
x1497
413B
Spyke Chatting
implementation
1300
x1679
85A
Domino
constructive algorithms
,
implementation
1300
x1759
51A
Cheaterius's Problem
implementation
1300
x1782
117A
Elevator
implementation
,
math
1300
x1974
238A
Not Wool Sequences
constructive algorithms
,
math
1300
x2008
54A
Presents
implementation
1300
x2008
929B
Места в самолёте
*special problem
,
implementation
1300
x2037
690F1
Tree of Life (easy)
1300
x2113
241A
Old Peykan
greedy
1300
x2203
173A
Rock-Paper-Scissors
implementation
,
math
1300
x2204
883F
Lost in Transliteration
implementation
1300
x2233
370B
Berland Bingo
implementation
1300
x2473
171D
Broken checker
*special problem
,
brute force
1300
x2516
203B
Game on Paper
brute force
,
implementation
1300
x2555
39B
Company Income Growth
greedy
1300
x2568
39H
Multiplication Table
implementation
1300
x2613
690C1
Brain Network (easy)
1300
x2689
64A
Factorial
*special problem
,
implementation
1300
x2710
770B
Maximize Sum of Digits
*special problem
,
implementation
,
math
1300
x2734
132A
Turing Tape
implementation
1300
x2737
57A
Square Earth?
dfs and similar
,
greedy
,
implementation
1300
x2815
99B
Help Chef Gerasim
implementation
,
sortings
1300
x2896
181B
Number of Triplets
binary search
,
brute force
1300
x2897
36A
Extra-terrestrial Intelligence
implementation
1300
x2900
730H
Delete Them
constructive algorithms
,
implementation
1300
x2919
304B
Calendar
brute force
,
implementation
1300
x2920
291B
Command Line Arguments
*special problem
,
implementation
,
strings
1300
x3012
634A
Island Puzzle
constructive algorithms
,
implementation
1300
x3089
44C
Holidays
implementation
1300
x3215
70A
Cookies
math
1300
x3225
62A
A Student's Dream
greedy
,
math
1300
x3370
673B
Problems for Round
greedy
,
implementation
1300
x3497
123A
Prime Permutation
implementation
,
number theory
,
strings
1300
x3518
807B
T-Shirt Hunt
brute force
,
implementation
1300
x3527
60A
Where Are My Flakes?
implementation
,
two pointers
1300
x3531
332A
Down the Hatch!
implementation
1300
x3532
147A
Punctuation
implementation
,
strings
1300
x3560
56B
Spoilt Permutation
implementation
1300
x3622
41C
Email address
expression parsing
,
implementation
1300
x3647
926A
2-3-numbers
implementation
,
math
1300
x3682
426B
Sereja and Mirroring
implementation
1300
x3769
61B
Hard Work
strings
1300
x3789
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3860
189B
Counting Rhombi
brute force
,
math
1300
x3877
171B
Star
*special problem
,
combinatorics
1300
x3948
311A
The Closest Pair
constructive algorithms
,
implementation
1300
x3998
1090A
Company Merging
greedy
1300
x4041
227A
Where do I Turn?
geometry
1300
x4046
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4076
1425H
Huge Boxes of Animal Toys
constructive algorithms
1300
x4083
43C
Lucky Tickets
greedy
1300
x4153
146B
Lucky Mask
brute force
,
implementation
1300
x4236
964B
Messages
math
1300
x4305
71B
Progress Bar
implementation
,
math
1300
x4368
965B
Battleship
implementation
1300
x4484
747C
Servers
implementation
1300
x4492
94B
Friends
graphs
,
implementation
,
math
1300
x4504
221B
Little Elephant and Numbers
implementation
1300
x4506
630N
Forecast
math
1300
x4513
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4683
92B
Binary Number
greedy
1300
x4712
526A
King of Thieves
brute force
,
implementation
1300
x4726
1070D
Garbage Disposal
greedy
1300
x4852
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x4892
1055B
Alice and Hairdresser
dsu
,
implementation
1300
x4898
924A
Mystical Mosaic
greedy
,
implementation
1300
x4910
144B
Meeting
implementation
1300
x5046
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5083
378B
Semifinals
implementation
,
sortings
1300
x5111
586B
Laurenty and Shop
implementation
1300
x5118
195B
After Training
data structures
,
implementation
,
math
1300
x5124
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x5155
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5221
234C
Weather
dp
,
implementation
1300
x5342
215B
Olympic Medal
greedy
,
math
1300
x5374
886C
Petya and Catacombs
dsu
,
greedy
,
implementation
,
trees
1300
x5433
887B
Cubes for Masha
brute force
,
implementation
1300
x5531
814B
An express train to reveries
constructive algorithms
1300
x5556
907A
Masha and Bears
brute force
,
implementation
1300
x5561
787B
Not Afraid
greedy
,
implementation
,
math
1300
x5572
821B
Okabe and Banana Trees
brute force
,
math
1300
x5643
828B
Black Square
implementation
1300
x5650
1424G
Years
data structures
,
sortings
1300
x5652
976B
Lara Croft and the New Game
implementation
,
math
1300
x5668
957A
Tritonic Iridescence
implementation
1300
x5671
628C
Bear and String Distance
greedy
,
strings
1300
x5683
185A
Plant
math
1300
x5704
471B
MUH and Important Things
implementation
,
sortings
1300
x5892
792B
Counting-out Rhyme
implementation
1300
x5899
222B
Cosmic Tables
data structures
,
implementation
1300
x5986
493A
Vasya and Football
implementation
1300
x6024
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26:17:34
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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
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shortest paths
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string suffix structures
strings
ternary search
trees
two pointers
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