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Problems
#
Name
543C
Remembering Strings
bitmasks
,
dp
2500
x1356
543B
Destroying Roads
constructive algorithms
,
graphs
,
shortest paths
2100
x3830
543A
Writing Code
dp
1800
x7679
542F
Quest
dp
,
greedy
2100
x734
542E
Playing on Graph
graphs
,
shortest paths
2600
x807
542D
Superhero's Job
dfs and similar
,
dp
,
hashing
,
math
,
number theory
2600
x497
542C
Idempotent functions
constructive algorithms
,
graphs
,
math
2000
x1097
542B
Duck Hunt
data structures
3100
x125
542A
Place Your Ad Here
data structures
,
sortings
2400
x520
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2009
540D
Bad Luck Island
dp
,
probabilities
1900
x5166
540C
Ice Cave
dfs and similar
2000
x7018
540B
School Marks
greedy
,
implementation
1700
x4609
540A
Combination Lock
implementation
800
x31539
538H
Summer Dichotomy
2-sat
,
data structures
,
dfs and similar
,
greedy
3200
x627
538G
Berserk Robot
constructive algorithms
,
math
,
sortings
3100
x443
538F
A Heap of Heaps
brute force
,
data structures
,
math
,
sortings
2200
x1498
538E
Demiurges Play Again
dfs and similar
,
dp
,
math
,
trees
2200
x1499
538D
Weird Chess
brute force
,
constructive algorithms
,
implementation
1800
x2406
538C
Tourist's Notes
binary search
,
brute force
,
greedy
,
implementation
,
math
1600
x5760
538B
Quasi Binary
constructive algorithms
,
dp
,
greedy
,
implementation
1400
x17603
538A
Cutting Banner
brute force
,
implementation
1400
x7049
536E
Tavas on the Path
data structures
,
divide and conquer
,
trees
3100
x371
536D
Tavas in Kansas
dp
,
games
2900
x710
535E
Tavas and Pashmaks
geometry
,
math
2600
x798
535D
Tavas and Malekas
greedy
,
hashing
,
string suffix structures
,
strings
1900
x3773
535C
Tavas and Karafs
binary search
,
greedy
,
math
1900
x3705
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21649
535A
Tavas and Nafas
brute force
,
implementation
1000
x11823
534F
Simplified Nonogram
bitmasks
,
dp
,
hashing
,
meet-in-the-middle
2400
x443
534E
Berland Local Positioning System
constructive algorithms
,
greedy
,
hashing
,
implementation
2400
x341
534D
Handshakes
binary search
,
constructive algorithms
,
data structures
,
greedy
1900
x2372
534C
Polycarpus' Dice
math
1600
x4927
534B
Covered Path
dp
,
greedy
,
math
1400
x9877
534A
Exam
constructive algorithms
,
implementation
,
math
1100
x12037
533F
Encoding
hashing
,
string suffix structures
,
strings
2400
x866
533E
Correcting Mistakes
constructive algorithms
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x2172
533D
Landmarks
data structures
,
dp
3000
x216
533C
Board Game
games
,
greedy
,
implementation
,
math
1700
x2146
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2304
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x371
530I
Different variables
*special problem
2500
x43
530H
Points in triangle
*special problem
,
geometry
2100
x119
530G
Levenshtein distance
*special problem
2100
x147
530F
Jumping frogs
*special problem
2100
x97
530E
Sum and product
*special problem
1700
x302
530D
Set subtraction
*special problem
1600
x446
530C
Diophantine equation
*special problem
1500
x539
530B
String inside out
*special problem
1600
x537
530A
Quadratic equation
*special problem
1500
x668
529B
Group Photo 2 (online mirror version)
brute force
,
greedy
,
sortings
1900
x853
528E
Triangles 3000
geometry
,
sortings
3100
x214
528D
Fuzzy Search
bitmasks
,
brute force
,
fft
2500
x2069
527E
Data Center Drama
dfs and similar
,
graphs
2600
x1810
527D
Clique Problem
data structures
,
dp
,
greedy
,
implementation
,
sortings
1800
x4653
527C
Glass Carving
binary search
,
data structures
,
implementation
1500
x6657
527B
Error Correct System
greedy
1500
x3856
527A
Playing with Paper
implementation
,
math
1100
x14093
526G
Spiders Evil Plan
greedy
,
trees
3300
x691
526F
Pudding Monsters
data structures
,
divide and conquer
3000
x2316
526E
Transmitting Levels
dp
,
implementation
2400
x1054
526D
Om Nom and Necklace
hashing
,
string suffix structures
,
strings
2200
x2097
526C
Om Nom and Candies
brute force
,
greedy
,
math
2000
x2266
526B
Om Nom and Dark Park
dfs and similar
,
greedy
,
implementation
1400
x4469
526A
King of Thieves
brute force
,
implementation
1300
x4724
525E
Anya and Cubes
binary search
,
bitmasks
,
brute force
,
dp
,
math
,
meet-in-the-middle
2100
x2752
525D
Arthur and Walls
constructive algorithms
,
data structures
,
graphs
,
greedy
,
shortest paths
2400
x1636
525C
Ilya and Sticks
greedy
,
math
,
sortings
1600
x5702
525B
Pasha and String
constructive algorithms
,
greedy
,
math
,
strings
1400
x9187
525A
Vitaliy and Pie
greedy
,
hashing
,
strings
1100
x13870
524F
And Yet Another Bracket Sequence
data structures
,
greedy
,
hashing
,
string suffix structures
,
strings
2700
x521
524E
Rooks and Rectangles
data structures
,
sortings
2400
x1162
524D
Social Network
greedy
,
two pointers
2100
x943
524C
The Art of Dealing with ATM
binary search
,
sortings
1900
x1979
524B
Фото на память - 2 (round version)
dp
,
greedy
1700
x1444
524A
Возможно, вы знаете этих людей?
implementation
1600
x1392
523D
Statistics of Recompressing Videos
*special problem
,
data structures
,
implementation
1600
x2243
523C
Name Quest
*special problem
,
greedy
1400
x2466
523B
Mean Requests
*special problem
,
implementation
1500
x941
523A
Rotate, Flip and Zoom
*special problem
,
implementation
1200
x2572
522D
Closest Equals
*special problem
,
data structures
2000
x2952
522C
Chicken or Fish?
greedy
2100
x709
522B
Photo to Remember
*special problem
,
data structures
,
dp
,
implementation
1100
x8688
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x15720
521E
Cycling City
dfs and similar
,
graphs
3100
x916
521D
Shop
greedy
2800
x1483
520E
Pluses everywhere
combinatorics
,
dp
,
math
,
number theory
2200
x1810
520D
Cubes
games
,
greedy
,
implementation
2100
x1533
520C
DNA Alignment
math
,
strings
1500
x4087
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47998
520A
Pangram
implementation
,
strings
800
x90005
519E
A and B and Lecture Rooms
binary search
,
data structures
,
dfs and similar
,
dp
,
trees
2100
x6205
519D
A and B and Interesting Substrings
data structures
,
dp
,
two pointers
1800
x6273
519C
A and B and Team Training
greedy
,
implementation
,
math
,
number theory
1300
x19338
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x37751
519A
A and B and Chess
implementation
900
x18562
518F
Pasha and Pipe
binary search
,
brute force
,
combinatorics
,
dp
,
implementation
2300
x352
518E
Arthur and Questions
greedy
,
implementation
,
math
,
ternary search
2200
x906
518D
Ilya and Escalator
combinatorics
,
dp
,
math
,
probabilities
1700
x6688
518C
Anya and Smartphone
constructive algorithms
,
data structures
,
implementation
1600
x5926
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data structures
dfs and similar
divide and conquer
dp
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expression parsing
fft
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graphs
greedy
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strings
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