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When submitting a solution in C++, please select either C++14 (GCC 6-32) or C++17 (GCC 7-32) as your compiler.
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Contest is running
Codeforces Round 935 (Div. 3)
00:36:43
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probabilities
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
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matrices
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number theory
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strings
ternary search
trees
two pointers
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Custom test
Problems
#
Name
9A
Die Roll
math
,
probabilities
800
x51279
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x38620
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x28609
1788B
Sum of Two Numbers
constructive algorithms
,
greedy
,
implementation
,
math
,
probabilities
1100
x18940
1459A
Red-Blue Shuffle
math
,
probabilities
800
x16687
839C
Journey
dfs and similar
,
dp
,
graphs
,
probabilities
,
trees
1500
x15634
312B
Archer
math
,
probabilities
1300
x10946
1461C
Random Events
dp
,
math
,
probabilities
1500
x10768
453A
Little Pony and Expected Maximum
probabilities
1600
x9824
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7156
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6620
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6616
518D
Ilya and Escalator
combinatorics
,
dp
,
math
,
probabilities
1700
x6608
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x5791
1713D
Tournament Countdown
constructive algorithms
,
greedy
,
interactive
,
number theory
,
probabilities
1800
x5379
621C
Wet Shark and Flowers
combinatorics
,
math
,
number theory
,
probabilities
1700
x5253
1543C
Need for Pink Slips
bitmasks
,
brute force
,
dfs and similar
,
implementation
,
math
,
probabilities
1900
x5151
540D
Bad Luck Island
dp
,
probabilities
1900
x5097
442B
Andrey and Problem
greedy
,
math
,
probabilities
1800
x4827
16E
Fish
bitmasks
,
dp
,
probabilities
1900
x4512
1824B1
LuoTianyi and the Floating Islands (Easy Version)
combinatorics
,
math
,
probabilities
,
trees
1800
x4233
1753C
Wish I Knew How to Sort
dp
,
math
,
probabilities
2000
x4089
1453D
Checkpoints
brute force
,
constructive algorithms
,
greedy
,
math
,
probabilities
1900
x4054
1726D
Edge Split
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
probabilities
,
trees
2000
x3499
280C
Game on Tree
implementation
,
math
,
probabilities
,
trees
2200
x3402
696B
Puzzles
dfs and similar
,
math
,
probabilities
,
trees
1700
x3366
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x3269
107B
Basketball Team
combinatorics
,
dp
,
math
,
probabilities
1600
x3227
1265E
Beautiful Mirrors
data structures
,
dp
,
math
,
probabilities
2100
x3220
1777D
Score of a Tree
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
math
,
probabilities
,
trees
1900
x3134
896C
Willem, Chtholly and Seniorious
data structures
,
probabilities
2600
x3076
1925D
Good Trip
combinatorics
,
dp
,
math
,
probabilities
1900
x3028
1009E
Intercity Travelling
combinatorics
,
math
,
probabilities
2000
x2865
1114E
Arithmetic Progression
binary search
,
interactive
,
number theory
,
probabilities
2200
x2750
768D
Jon and Orbs
dp
,
math
,
probabilities
2200
x2706
840D
Destiny
data structures
,
probabilities
2500
x2697
626D
Jerry's Protest
brute force
,
combinatorics
,
dp
,
probabilities
1800
x2638
930B
Game with String
implementation
,
probabilities
,
strings
1600
x2570
1097D
Makoto and a Blackboard
dp
,
math
,
number theory
,
probabilities
2200
x2540
77B
Falling Anvils
math
,
probabilities
1800
x2527
935D
Fafa and Ancient Alphabet
math
,
probabilities
1900
x2504
1778D
Flexible String Revisit
combinatorics
,
dp
,
math
,
probabilities
2100
x2476
1540B
Tree Array
brute force
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
,
trees
2300
x2465
1824B2
LuoTianyi and the Floating Islands (Hard Version)
combinatorics
,
dfs and similar
,
math
,
probabilities
,
trees
2300
x2434
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2427
952D
I'm Feeling Lucky!
probabilities
1800
x2373
1612E
Messages
brute force
,
dp
,
greedy
,
probabilities
,
sortings
2000
x2357
1305F
Kuroni and the Punishment
math
,
number theory
,
probabilities
2500
x2290
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2263
351B
Jeff and Furik
combinatorics
,
dp
,
probabilities
1900
x2260
908D
New Year and Arbitrary Arrangement
dp
,
math
,
probabilities
2200
x2218
1840G1
In Search of Truth (Easy Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2200
x2169
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2169
843B
Interactive LowerBound
brute force
,
interactive
,
probabilities
2000
x2122
167B
Wizards and Huge Prize
dp
,
math
,
probabilities
1800
x2066
1523D
Love-Hate
bitmasks
,
brute force
,
dp
,
probabilities
2400
x2059
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2004
1139D
Steps to One
dp
,
math
,
number theory
,
probabilities
2300
x1952
364D
Ghd
brute force
,
math
,
probabilities
2900
x1935
912D
Fishes
data structures
,
graphs
,
greedy
,
probabilities
,
shortest paths
2100
x1927
1525E
Assimilation IV
combinatorics
,
dp
,
math
,
probabilities
,
two pointers
2100
x1915
678E
Another Sith Tournament
bitmasks
,
dp
,
math
,
probabilities
2200
x1884
30C
Shooting Gallery
dp
,
probabilities
1800
x1838
960E
Alternating Tree
combinatorics
,
dfs and similar
,
divide and conquer
,
dp
,
probabilities
,
trees
2300
x1782
24D
Broken robot
dp
,
math
,
probabilities
2400
x1758
1418E
Expected Damage
binary search
,
combinatorics
,
probabilities
2400
x1697
1278F
Cards
combinatorics
,
dp
,
math
,
number theory
,
probabilities
2600
x1654
1042E
Vasya and Magic Matrix
dp
,
math
,
probabilities
2300
x1654
1096F
Inversion Expectation
dp
,
math
,
probabilities
2300
x1557
1599C
Bubble Strike
combinatorics
,
math
,
probabilities
,
ternary search
2000
x1536
513C
Second price auction
bitmasks
,
probabilities
2000
x1513
1523E
Crypto Lights
combinatorics
,
dp
,
math
,
probabilities
2600
x1510
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1461
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1451
1773A
Amazing Trick
constructive algorithms
,
graph matchings
,
math
,
probabilities
1900
x1442
1918E
ace5 and Task Order
constructive algorithms
,
divide and conquer
,
implementation
,
interactive
,
probabilities
,
sortings
2200
x1398
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1387
452C
Magic Trick
combinatorics
,
math
,
probabilities
2100
x1385
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1367
261B
Maxim and Restaurant
dp
,
math
,
probabilities
1900
x1355
1623D
Robot Cleaner Revisit
implementation
,
math
,
probabilities
2300
x1339
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1319
109B
Lucky Probability
brute force
,
probabilities
1900
x1312
1156F
Card Bag
dp
,
math
,
probabilities
2300
x1309
605E
Intergalaxy Trips
probabilities
,
shortest paths
2700
x1297
1770E
Koxia and Tree
combinatorics
,
dfs and similar
,
dp
,
dsu
,
math
,
probabilities
,
trees
2400
x1279
601C
Kleofáš and the n-thlon
dp
,
math
,
probabilities
2300
x1278
1310D
Tourism
dp
,
graphs
,
probabilities
2300
x1270
711E
ZS and The Birthday Paradox
math
,
number theory
,
probabilities
2300
x1234
54C
First Digit Law
dp
,
math
,
probabilities
2000
x1232
698C
LRU
bitmasks
,
dp
,
math
,
probabilities
2400
x1231
258D
Little Elephant and Broken Sorting
dp
,
math
,
probabilities
2600
x1200
870D
Something with XOR Queries
brute force
,
interactive
,
probabilities
2000
x1167
1264D1
Beautiful Bracket Sequence (easy version)
combinatorics
,
dp
,
probabilities
2600
x1157
1556F
Sports Betting
bitmasks
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
2500
x1147
498B
Name That Tune
dp
,
probabilities
,
two pointers
2400
x1137
1264C
Beautiful Mirrors with queries
data structures
,
probabilities
2400
x1116
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1116
1254D
Tree Queries
data structures
,
probabilities
,
trees
2700
x1103
1245E
Hyakugoku and Ladders
dp
,
probabilities
,
shortest paths
2300
x1083
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