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#
Name
1210F2
Marek and Matching (hard version)
brute force
,
probabilities
3200
x190
1210F1
Marek and Matching (easy version)
brute force
,
probabilities
3100
x190
1198F
GCD Groups 2
greedy
,
number theory
,
probabilities
2900
x821
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x974
1190F
Tokitsukaze and Powers
number theory
,
probabilities
3400
x91
1187F
Expected Square Beauty
dp
,
math
,
probabilities
2500
x850
1172C2
Nauuo and Pictures (hard version)
dp
,
probabilities
2600
x819
1172C1
Nauuo and Pictures (easy version)
dp
,
probabilities
2300
x1040
1156F
Card Bag
dp
,
math
,
probabilities
2300
x1341
1153F
Serval and Bonus Problem
combinatorics
,
dp
,
math
,
probabilities
2600
x763
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1149
1148G
Gold Experience
constructive algorithms
,
graphs
,
math
,
number theory
,
probabilities
3300
x316
1139D
Steps to One
dp
,
math
,
number theory
,
probabilities
2300
x2000
1114E
Arithmetic Progression
binary search
,
interactive
,
number theory
,
probabilities
2200
x2778
1097D
Makoto and a Blackboard
dp
,
math
,
number theory
,
probabilities
2200
x2567
1096F
Inversion Expectation
dp
,
math
,
probabilities
2300
x1567
1096E
The Top Scorer
combinatorics
,
dp
,
math
,
probabilities
2500
x913
1081G
Mergesort Strikes Back
math
,
probabilities
3200
x342
1067D
Computer Game
dp
,
greedy
,
math
,
probabilities
3100
x358
1061F
Lost Root
interactive
,
probabilities
2400
x691
1045D
Interstellar battle
math
,
probabilities
,
trees
2200
x637
1042E
Vasya and Magic Matrix
dp
,
math
,
probabilities
2300
x1695
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2284
1009E
Intercity Travelling
combinatorics
,
math
,
probabilities
2000
x2895
989E
A Trance of Nightfall
dp
,
geometry
,
matrices
,
probabilities
2700
x229
960E
Alternating Tree
combinatorics
,
dfs and similar
,
divide and conquer
,
dp
,
probabilities
,
trees
2300
x1830
952D
I'm Feeling Lucky!
probabilities
1800
x2413
949F
Astronomy
geometry
,
probabilities
3300
x58
935D
Fafa and Ancient Alphabet
math
,
probabilities
1900
x2529
930B
Game with String
implementation
,
probabilities
,
strings
1600
x2601
913H
Don't Exceed
math
,
probabilities
3400
x124
913F
Strongly Connected Tournament
dp
,
graphs
,
math
,
probabilities
2800
x610
912D
Fishes
data structures
,
graphs
,
greedy
,
probabilities
,
shortest paths
2100
x1960
908D
New Year and Arbitrary Arrangement
dp
,
math
,
probabilities
2200
x2254
896C
Willem, Chtholly and Seniorious
data structures
,
probabilities
2600
x3193
895E
Eyes Closed
data structures
,
probabilities
2300
x911
870D
Something with XOR Queries
brute force
,
interactive
,
probabilities
2000
x1198
859D
Third Month Insanity
dp
,
probabilities
,
trees
2100
x911
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2210
843B
Interactive LowerBound
brute force
,
interactive
,
probabilities
2000
x2157
840D
Destiny
data structures
,
probabilities
2500
x2809
839C
Journey
dfs and similar
,
dp
,
graphs
,
probabilities
,
trees
1500
x16014
802F
Marmots (hard)
math
,
probabilities
2800
x121
768F
Barrels and boxes
brute force
,
combinatorics
,
math
,
number theory
,
probabilities
2300
x1001
768D
Jon and Orbs
dp
,
math
,
probabilities
2200
x2788
749E
Inversions After Shuffle
data structures
,
probabilities
2400
x1035
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2068
717H
Pokermon League challenge
math
,
probabilities
2400
x418
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1380
712E
Memory and Casinos
data structures
,
math
,
probabilities
2500
x605
711E
ZS and The Birthday Paradox
math
,
number theory
,
probabilities
2300
x1246
698C
LRU
bitmasks
,
dp
,
math
,
probabilities
2400
x1283
696B
Puzzles
dfs and similar
,
math
,
probabilities
,
trees
1700
x3396
679D
Bear and Chase
brute force
,
dfs and similar
,
graphs
,
implementation
,
math
,
probabilities
2900
x312
678E
Another Sith Tournament
bitmasks
,
dp
,
math
,
probabilities
2200
x1922
662A
Gambling Nim
bitmasks
,
math
,
matrices
,
probabilities
2400
x430
643E
Bear and Destroying Subtrees
dp
,
math
,
probabilities
,
trees
2700
x582
641D
Little Artem and Random Variable
dp
,
implementation
,
math
,
probabilities
2400
x1048
633E
Startup Funding
binary search
,
constructive algorithms
,
data structures
,
probabilities
,
two pointers
2400
x572
629E
Famil Door and Roads
combinatorics
,
data structures
,
dfs and similar
,
dp
,
probabilities
,
trees
2300
x972
626D
Jerry's Protest
brute force
,
combinatorics
,
dp
,
probabilities
1800
x2655
623D
Birthday
greedy
,
math
,
probabilities
2700
x468
621C
Wet Shark and Flowers
combinatorics
,
math
,
number theory
,
probabilities
1700
x5311
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x221
605E
Intergalaxy Trips
probabilities
,
shortest paths
2700
x1323
601C
Kleofáš and the n-thlon
dp
,
math
,
probabilities
2300
x1292
596D
Wilbur and Trees
dp
,
math
,
probabilities
,
sortings
2300
x678
559D
Randomizer
combinatorics
,
geometry
,
probabilities
2800
x424
553E
Kyoya and Train
dp
,
fft
,
graphs
,
math
,
probabilities
3200
x539
540D
Bad Luck Island
dp
,
probabilities
1900
x5202
518D
Ilya and Escalator
combinatorics
,
dp
,
math
,
probabilities
1700
x6721
513G2
Inversions problem
dp
,
probabilities
2400
x629
513C
Second price auction
bitmasks
,
probabilities
2000
x1517
498B
Name That Tune
dp
,
probabilities
,
two pointers
2400
x1150
494C
Helping People
dp
,
probabilities
2600
x834
482C
Game with Strings
bitmasks
,
dp
,
probabilities
2600
x875
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x29277
464D
World of Darkraft - 2
dp
,
probabilities
2700
x661
457D
Bingo!
combinatorics
,
math
,
probabilities
2700
x270
453A
Little Pony and Expected Maximum
probabilities
1600
x10011
452C
Magic Trick
combinatorics
,
math
,
probabilities
2100
x1448
446D
DZY Loves Games
math
,
matrices
,
probabilities
2800
x380
444B
DZY Loves FFT
probabilities
2300
x1054
442B
Andrey and Problem
greedy
,
math
,
probabilities
1800
x4861
441E
Valera and Number
bitmasks
,
dp
,
math
,
probabilities
2400
x679
424E
Colored Jenga
dfs and similar
,
dp
,
probabilities
2500
x129
417E
Square Table
constructive algorithms
,
math
,
probabilities
2400
x783
398B
Painting The Wall
dp
,
probabilities
x997
364D
Ghd
brute force
,
math
,
probabilities
2900
x1979
351B
Jeff and Furik
combinatorics
,
dp
,
probabilities
1900
x2292
345A
Expecting Trouble
*special problem
,
probabilities
1500
x478
335E
Counting Skyscrapers
dp
,
math
,
probabilities
2800
x219
312B
Archer
math
,
probabilities
1300
x11132
303E
Random Ranking
dp
,
math
,
probabilities
3000
x314
293D
Ksusha and Square
geometry
,
math
,
probabilities
,
two pointers
2700
x235
280C
Game on Tree
implementation
,
math
,
probabilities
,
trees
2200
x3533
277D
Google Code Jam
dp
,
probabilities
2800
x329
268E
Playlist
math
,
probabilities
,
sortings
2100
x978
261B
Maxim and Restaurant
dp
,
math
,
probabilities
1900
x1366
258D
Little Elephant and Broken Sorting
dp
,
math
,
probabilities
2600
x1217
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35:06:05
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
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brute force
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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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