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Name
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8929
214B
Hometask
brute force
,
constructive algorithms
,
greedy
,
math
1600
x4888
213D
Stars
constructive algorithms
,
geometry
2300
x334
209C
Trails and Glades
constructive algorithms
,
dsu
,
graphs
,
greedy
2400
x691
209B
Pixels
constructive algorithms
,
math
2100
x357
201A
Clear Symmetry
constructive algorithms
,
dp
,
math
1700
x2964
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x25177
198D
Cube Snake
constructive algorithms
2700
x104
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6045
196C
Paint Tree
constructive algorithms
,
divide and conquer
,
geometry
,
sortings
,
trees
2200
x740
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x496
193A
Cutting Figure
constructive algorithms
,
graphs
,
trees
1700
x3848
183A
Headquarters
constructive algorithms
,
math
1700
x526
180F
Mathematical Analysis Rocks!
constructive algorithms
,
implementation
,
math
1200
x2457
176C
Playing with Superglue
combinatorics
,
constructive algorithms
2000
x464
173D
Deputies
constructive algorithms
,
graphs
,
greedy
,
implementation
2500
x246
171A
Mysterious numbers - 1
*special problem
,
constructive algorithms
1200
x4362
161B
Discounts
constructive algorithms
,
greedy
,
sortings
1700
x1923
156B
Suspects
constructive algorithms
,
data structures
,
implementation
1600
x2188
148C
Terse princess
constructive algorithms
,
greedy
1700
x3068
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87415
145B
Lucky Number 2
constructive algorithms
1800
x2152
142B
Help General
constructive algorithms
,
greedy
,
implementation
1800
x2137
141E
Clearing Up
constructive algorithms
,
dp
,
dsu
,
graphs
2300
x811
141C
Queue
constructive algorithms
,
greedy
,
sortings
1800
x2371
135C
Zero-One
constructive algorithms
,
games
,
greedy
1900
x1322
134C
Swaps
constructive algorithms
,
graphs
,
greedy
2200
x459
132D
Constants in the language of Shakespeare
constructive algorithms
,
dp
,
greedy
2100
x603
128D
Numbers
constructive algorithms
,
implementation
2000
x1088
128B
String
brute force
,
constructive algorithms
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x2464
126C
E-reader Display
constructive algorithms
,
greedy
2000
x711
125D
Two progressions
constructive algorithms
,
greedy
2200
x391
125C
Hobbits' Party
constructive algorithms
,
greedy
1600
x903
119B
Before Exam
constructive algorithms
,
implementation
,
sortings
1900
x1061
118B
Present from Lena
constructive algorithms
,
implementation
1000
x28437
110B
Lucky String
constructive algorithms
,
strings
1100
x9963
109D
Lucky Sorting
constructive algorithms
,
sortings
2000
x616
103C
Russian Roulette
constructive algorithms
,
greedy
1900
x937
98D
Help Monks
constructive algorithms
2500
x179
97B
Superset
constructive algorithms
,
divide and conquer
2300
x804
91D
Grocer's Problem
constructive algorithms
,
graphs
,
greedy
2600
x261
86B
Tetris revisited
constructive algorithms
,
graph matchings
,
greedy
,
math
2200
x401
85A
Domino
constructive algorithms
,
implementation
1300
x1759
82B
Sets
constructive algorithms
,
hashing
,
implementation
1700
x2017
81D
Polycarp's Picture Gallery
constructive algorithms
,
greedy
2100
x631
78B
Easter Eggs
constructive algorithms
,
implementation
1200
x12771
74E
Shift It!
constructive algorithms
2800
x142
66D
Petya and His Friends
constructive algorithms
,
math
,
number theory
1700
x3055
63D
Dividing Island
constructive algorithms
1900
x1221
59D
Team Arrangement
constructive algorithms
,
greedy
,
implementation
2000
x603
53C
Little Frog
constructive algorithms
1200
x6222
49C
Disposition
constructive algorithms
,
math
1700
x1645
48H
Black and White
constructive algorithms
2800
x134
45J
Planting Trees
constructive algorithms
1800
x888
45E
Director
constructive algorithms
,
greedy
2000
x524
44J
Triminoes
constructive algorithms
,
greedy
2000
x555
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1048
42D
Strange town
constructive algorithms
,
math
2300
x388
42C
Safe cracking
brute force
,
constructive algorithms
2200
x446
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1903
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3859
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x496
30E
Tricky and Clever Password
binary search
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
strings
2800
x674
29D
Ant on the Tree
constructive algorithms
,
dfs and similar
,
trees
2000
x2318
27C
Unordered Subsequence
constructive algorithms
,
greedy
1900
x2696
26E
Multithreading
constructive algorithms
2400
x362
26C
Parquet
combinatorics
,
constructive algorithms
,
greedy
,
implementation
2000
x824
23C
Oranges and Apples
constructive algorithms
,
sortings
2500
x1357
23B
Party
constructive algorithms
,
graphs
,
math
1600
x3200
14C
Four Segments
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3096
12E
Start of the session
constructive algorithms
2100
x1163
11A
Increasing Sequence
constructive algorithms
,
implementation
,
math
900
x12449
10E
Greedy Change
constructive algorithms
2600
x802
8B
Obsession with Robots
constructive algorithms
,
graphs
,
implementation
1400
x4079
7A
Kalevitch and Chess
brute force
,
constructive algorithms
1100
x6859
5C
Longest Regular Bracket Sequence
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
,
strings
1900
x12717
4B
Before an Exam
constructive algorithms
,
greedy
1200
x23716
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