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combine-tags-by-or
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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
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Custom test
Problems
#
Name
405B
Domino Effect
1100
x5768
404B
Marathon
implementation
,
math
1500
x2924
402C
Searching for Graph
brute force
,
constructive algorithms
,
graphs
1500
x5865
402B
Trees in a Row
brute force
,
implementation
1400
x3805
402A
Nuts
greedy
,
math
1100
x4593
401C
Team
constructive algorithms
,
greedy
,
implementation
1400
x19944
401B
Sereja and Contests
greedy
,
implementation
,
math
1200
x4432
400C
Inna and Huge Candy Matrix
implementation
,
math
1500
x2890
400B
Inna and New Matrix of Candies
brute force
,
implementation
,
schedules
1200
x7700
389B
Fox and Cross
greedy
,
implementation
1100
x6905
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11474
387B
George and Round
brute force
,
greedy
,
two pointers
1200
x12206
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2161
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9885
384B
Multitasking
greedy
,
implementation
,
sortings
,
two pointers
1500
x3525
382A
Ksenia and Pan Scales
greedy
,
implementation
1100
x12354
381B
Sereja and Stairs
greedy
,
implementation
,
sortings
1100
x6745
379C
New Year Ratings Change
greedy
,
sortings
1400
x6545
379B
New Year Present
constructive algorithms
,
implementation
1200
x7253
378B
Semifinals
implementation
,
sortings
1300
x5216
376B
I.O.U.
implementation
1300
x6372
374B
Inna and Nine
combinatorics
,
greedy
1500
x3313
371B
Fox Dividing Cheese
math
,
number theory
1300
x11314
370B
Berland Bingo
implementation
1300
x2513
370A
Rook, Bishop and King
graphs
,
math
,
shortest paths
1100
x10211
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6467
368B
Sereja and Suffixes
data structures
,
dp
1100
x41434
367A
Sereja and Algorithm
data structures
,
implementation
1500
x4318
366B
Dima and To-do List
brute force
,
implementation
1200
x6824
366A
Dima and Guards
implementation
1100
x4518
365B
The Fibonacci Segment
implementation
1100
x14449
365A
Good Number
implementation
1100
x18534
363C
Fixing Typos
greedy
,
implementation
1400
x13307
363B
Fence
brute force
,
dp
1100
x52778
362B
Petya and Staircases
implementation
,
sortings
1100
x13808
362A
Two Semiknights Meet
greedy
,
math
1500
x2663
361B
Levko and Permutation
constructive algorithms
,
math
,
number theory
1200
x8032
359B
Permutation
constructive algorithms
,
dp
,
math
1400
x7947
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
355B
Vasya and Public Transport
greedy
,
implementation
1100
x4499
355A
Vasya and Digital Root
constructive algorithms
,
implementation
1100
x9408
354A
Vasya and Robot
brute force
,
greedy
,
math
1500
x5472
353A
Domino
implementation
,
math
1200
x18467
352B
Jeff and Periods
implementation
,
sortings
1300
x16396
350B
Resort
graphs
1500
x3181
350A
TL
brute force
,
greedy
,
implementation
1200
x16360
349A
Cinema Line
greedy
,
implementation
1100
x29839
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9292
347A
Difference Row
constructive algorithms
,
implementation
,
sortings
1300
x8951
345A
Expecting Trouble
*special problem
,
probabilities
1500
x484
344B
Simple Molecules
brute force
,
graphs
,
math
1200
x8838
342B
Xenia and Spies
brute force
,
greedy
,
implementation
1500
x4020
342A
Xenia and Divisors
greedy
,
implementation
1200
x12515
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7172
340A
The Wall
math
1200
x7586
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9333
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2565
334B
Eight Point Sets
sortings
1400
x3589
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x8006
332A
Down the Hatch!
implementation
1300
x3556
331C1
The Great Julya Calendar
dp
1100
x6138
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1413
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1363
330B
Road Construction
constructive algorithms
,
graphs
1300
x16991
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
327B
Hungry Sequence
math
1200
x19643
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x41766
325A
Square and Rectangles
implementation
1500
x2156
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7237
318B
Strings of Power
implementation
,
strings
,
two pointers
1300
x7514
316E1
Summer Homework
brute force
,
data structures
1500
x1478
316B1
EKG
brute force
,
dfs and similar
1500
x1372
316A2
Special Task
math
1400
x2137
316A1
Special Task
greedy
1100
x2661
315B
Sereja and Array
implementation
1200
x6994
315A
Sereja and Bottles
brute force
1400
x11101
313C
Ilya and Matrix
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x5625
313B
Ilya and Queries
dp
,
implementation
1100
x44064
312B
Archer
math
,
probabilities
1300
x11482
312A
Whose sentence is it?
implementation
,
strings
1100
x4971
311A
The Closest Pair
constructive algorithms
,
implementation
1300
x4032
304B
Calendar
brute force
,
implementation
1300
x2975
304A
Pythagorean Theorem II
brute force
,
math
1200
x10556
303A
Lucky Permutation Triple
constructive algorithms
,
implementation
,
math
1300
x7903
302B
Eugeny and Play List
binary search
,
implementation
,
two pointers
1200
x8108
300B
Coach
brute force
,
dfs and similar
,
graphs
1500
x6285
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x22707
298B
Sail
brute force
,
greedy
,
implementation
1200
x14084
298A
Snow Footprints
greedy
,
implementation
1300
x10909
296A
Yaroslav and Permutations
greedy
,
math
1100
x23063
295A
Greg and Array
data structures
,
implementation
1400
x17710
293A
Weird Game
games
,
greedy
1500
x2880
292B
Network Topology
graphs
,
implementation
1200
x8206
292A
SMSC
implementation
1100
x2696
291B
Command Line Arguments
*special problem
,
implementation
,
strings
1300
x3031
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