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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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Status
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Custom test
Problems
#
Name
414B
Mashmokh and ACM
combinatorics
,
dp
,
number theory
1400
x22203
414A
Mashmokh and Numbers
constructive algorithms
,
number theory
1500
x9791
413C
Jeopardy!
greedy
,
math
1400
x2376
411C
Kicker
implementation
1700
x1227
411B
Multi-core Processor
implementation
1600
x1277
409H
A + B Strikes Back
*special problem
,
brute force
,
constructive algorithms
,
dsu
,
implementation
1500
x8884
409E
Dome
*special problem
1800
x577
409D
Big Data
*special problem
1700
x1713
409C
Magnum Opus
*special problem
1700
x1978
409B
Mysterious Language
*special problem
1700
x1357
409A
The Great Game
*special problem
1700
x2467
407B
Long Path
dp
,
implementation
1600
x6513
407A
Triangle
brute force
,
geometry
,
implementation
,
math
1600
x4876
405D
Toy Sum
greedy
,
implementation
,
math
1700
x3117
405C
Unusual Product
implementation
,
math
1600
x4625
404C
Restore Graph
dfs and similar
,
graphs
,
sortings
1800
x5201
404B
Marathon
implementation
,
math
1500
x2924
402D
Upgrading Array
dp
,
greedy
,
math
,
number theory
1800
x2608
402C
Searching for Graph
brute force
,
constructive algorithms
,
graphs
1500
x5866
402B
Trees in a Row
brute force
,
implementation
1400
x3805
401C
Team
constructive algorithms
,
greedy
,
implementation
1400
x19945
400C
Inna and Huge Candy Matrix
implementation
,
math
1500
x2890
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11474
387C
George and Number
greedy
,
implementation
1700
x2185
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2161
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9622
384B
Multitasking
greedy
,
implementation
,
sortings
,
two pointers
1500
x3525
383A
Milking cows
data structures
,
greedy
1600
x5256
382C
Arithmetic Progression
implementation
,
sortings
1700
x8274
380A
Sereja and Prefixes
binary search
,
brute force
1600
x2681
379C
New Year Ratings Change
greedy
,
sortings
1400
x6545
377A
Maze
dfs and similar
1600
x22360
375B
Maximum Submatrix 2
data structures
,
dp
,
implementation
,
sortings
1600
x5050
375A
Divisible by Seven
math
,
number theory
1600
x4819
374B
Inna and Nine
combinatorics
,
greedy
1500
x3315
373B
Making Sequences is Fun
binary search
,
implementation
,
math
1600
x2475
372A
Counting Kangaroos is Fun
binary search
,
greedy
,
sortings
,
two pointers
1600
x12928
371D
Vessels
data structures
,
dsu
,
implementation
,
trees
1800
x5632
371C
Hamburgers
binary search
,
brute force
1600
x26157
370C
Mittens
constructive algorithms
,
greedy
,
sortings
1800
x1561
369C
Valera and Elections
dfs and similar
,
graphs
,
trees
1600
x9957
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6467
367A
Sereja and Algorithm
data structures
,
implementation
1500
x4318
364A
Matrix
combinatorics
,
data structures
,
implementation
1600
x4668
363D
Renting Bikes
binary search
,
greedy
1800
x3856
363C
Fixing Typos
greedy
,
implementation
1400
x13307
362A
Two Semiknights Meet
greedy
,
math
1500
x2663
360A
Levko and Array Recovery
greedy
,
implementation
1700
x2054
359B
Permutation
constructive algorithms
,
dp
,
math
1400
x7948
358D
Dima and Hares
dp
,
greedy
1800
x4016
358B
Dima and Text Messages
brute force
,
strings
1500
x3722
358A
Dima and Continuous Line
brute force
,
implementation
1400
x7741
357B
Flag Day
constructive algorithms
,
implementation
1400
x8176
356A
Knight Tournament
data structures
,
dsu
1500
x13508
354A
Vasya and Robot
brute force
,
greedy
,
math
1500
x5472
353C
Find Maximum
implementation
,
math
,
number theory
1600
x4824
351A
Jeff and Rounding
dp
,
greedy
,
implementation
,
math
1800
x2919
350C
Bombs
greedy
,
implementation
,
sortings
1600
x6540
350B
Resort
graphs
1500
x3181
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x13938
348A
Mafia
binary search
,
math
,
sortings
1600
x13005
346A
Alice and Bob
games
,
math
,
number theory
1600
x8677
345A
Expecting Trouble
*special problem
,
probabilities
1500
x484
343B
Alternating Current
data structures
,
greedy
,
implementation
1600
x13785
343A
Rational Resistance
math
,
number theory
1600
x8727
342B
Xenia and Spies
brute force
,
greedy
,
implementation
1500
x4020
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7172
340C
Tourist Problem
combinatorics
,
implementation
,
math
1600
x4223
339D
Xenia and Bit Operations
data structures
,
trees
1700
x25471
339C
Xenia and Weights
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x8302
337C
Quiz
binary search
,
greedy
,
math
,
matrices
,
number theory
1600
x4894
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9333
336C
Vasily the Bear and Sequence
brute force
,
greedy
,
implementation
,
number theory
1800
x2456
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2565
334B
Eight Point Sets
sortings
1400
x3589
333B
Chips
greedy
1800
x2646
333A
Secrets
greedy
1600
x4033
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x8006
331B1
Shave Beaver!
implementation
1700
x733
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1413
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1363
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x6374
329A
Purification
constructive algorithms
,
greedy
1500
x4637
328B
Sheldon and Ice Pieces
greedy
1500
x1320
328A
IQ Test
implementation
1800
x2064
327C
Magic Five
combinatorics
,
math
1700
x3197
325B
Stadium and Games
binary search
,
math
1800
x1525
325A
Square and Rectangles
implementation
1500
x2156
323A
Black-and-White Cube
combinatorics
,
constructive algorithms
1600
x737
322B
Ciel and Flowers
combinatorics
,
math
1600
x11738
321A
Ciel and Robot
binary search
,
implementation
,
math
1700
x3618
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7237
319A
Malek Dance Club
combinatorics
,
math
1600
x2792
317A
Perfect Pair
brute force
1600
x4642
316G1
Good Substrings
hashing
,
strings
1700
x963
316E1
Summer Homework
brute force
,
data structures
1500
x1478
316B2
EKG
dfs and similar
,
dp
1600
x1583
316B1
EKG
brute force
,
dfs and similar
1500
x1372
316A2
Special Task
math
1400
x2137
315A
Sereja and Bottles
brute force
1400
x11101
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