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Before contest
Codeforces Round #792 (Div. 1 + Div. 2)
29:03:45
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*has extra registration
→ Filter Problems
Difficulty:
—
dp
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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Problems
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Custom test
Problems
#
Name
996A
Hit the Lottery
dp
,
greedy
800
x52950
1472B
Fair Division
dp
,
greedy
,
math
800
x33610
1538A
Stone Game
brute force
,
dp
,
greedy
800
x28450
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x27598
894A
QAQ
brute force
,
dp
800
x24469
1519B
The Cake Is a Lie
dp
,
math
800
x23938
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x23068
1466B
Last minute enhancements
dp
,
greedy
800
x20284
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x20131
1549B
Gregor and the Pawn Game
dfs and similar
,
dp
,
flows
,
graph matchings
,
graphs
,
greedy
,
implementation
800
x19748
1539B
Love Song
dp
,
implementation
,
strings
800
x19710
1598A
Computer Game
brute force
,
dfs and similar
,
dp
,
implementation
800
x18228
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x17469
1566B
MIN-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
800
x16386
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x9025
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x61123
1475B
New Year's Number
brute force
,
dp
,
math
900
x32628
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x25938
1206B
Make Product Equal One
dp
,
implementation
900
x21171
1593B
Make it Divisible by 25
dfs and similar
,
dp
,
greedy
,
math
,
math
900
x18714
1559B
Mocha and Red and Blue
dp
,
greedy
900
x18626
1451B
Non-Substring Subsequence
dp
,
greedy
,
implementation
,
strings
900
x17031
1501B
Napoleon Cake
dp
,
implementation
,
sortings
900
x14882
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x14770
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x23013
1182A
Filling Shapes
dp
,
math
1000
x20701
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x20553
1469B
Red and Blue
dp
,
greedy
1000
x20274
1499B
Binary Removals
brute force
,
dp
,
greedy
,
implementation
1000
x17360
1566C
MAX-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
1000
x14122
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x7220
72G
Fibonacci army
*special problem
,
dp
1000
x1218
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x36827
363B
Fence
brute force
,
dp
1100
x32341
313B
Ilya and Queries
dp
,
implementation
1100
x29233
368B
Sereja and Suffixes
data structures
,
dp
1100
x28653
1472C
Long Jumps
dp
,
graphs
1100
x22586
1345B
Card Constructions
binary search
,
brute force
,
dp
,
math
1100
x21334
1382B
Sequential Nim
dp
,
games
1100
x20932
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x20538
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x19149
1478B
Nezzar and Lucky Number
brute force
,
dp
,
greedy
,
math
1100
x16361
1631B
Fun with Even Subarrays
dp
,
greedy
1100
x15864
1637B
MEX and Array
brute force
,
dp
,
greedy
,
math
1100
x12883
522B
Photo to Remember
*special problem
,
data structures
,
dp
,
implementation
1100
x7428
331C1
The Great Julya Calendar
dp
1100
x4820
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x33473
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x30226
1343C
Alternating Subsequence
dp
,
greedy
,
two pointers
1200
x28136
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x22994
1354B
Ternary String
binary search
,
dp
,
implementation
,
two pointers
1200
x22088
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x20687
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x19687
1272C
Yet Another Broken Keyboard
combinatorics
,
dp
,
implementation
1200
x18546
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x18014
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x17821
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x14042
1553C
Penalty
bitmasks
,
brute force
,
dp
,
greedy
1200
x13761
1485B
Replace and Keep Sorted
dp
,
implementation
,
math
1200
x13758
1598C
Delete Two Elements
data structures
,
dp
,
implementation
,
math
,
two pointers
1200
x13747
961B
Lecture Sleep
data structures
,
dp
,
implementation
,
two pointers
1200
x13077
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x12459
1200B
Block Adventure
dp
,
greedy
1200
x12224
1245B
Restricted RPS
constructive algorithms
,
dp
,
greedy
1200
x12031
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x11228
1140D
Minimum Triangulation
dp
,
greedy
,
math
1200
x11056
998B
Cutting
dp
,
greedy
,
sortings
1200
x10783
729B
Spotlights
dp
,
implementation
1200
x6585
189A
Cut Ribbon
brute force
,
dp
1300
x43802
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x21719
1360E
Polygon
dp
,
graphs
,
implementation
,
shortest paths
1300
x19929
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x16889
1285B
Just Eat It!
dp
,
greedy
,
implementation
1300
x16655
1555C
Coin Rows
brute force
,
constructive algorithms
,
dp
,
implementation
1300
x15494
1037C
Equalize
dp
,
greedy
,
strings
1300
x15387
1466C
Canine poetry
dp
,
greedy
,
strings
1300
x14961
1420C1
Pokémon Army (easy version)
constructive algorithms
,
dp
,
greedy
1300
x14075
1443B
Saving the City
dp
,
greedy
,
math
,
sortings
1300
x13070
1618D
Array and Operations
dp
,
greedy
,
math
1300
x13034
1660C
Get an Even String
dp
,
greedy
,
strings
1300
x12731
1176C
Lose it!
dp
,
greedy
,
implementation
1300
x12078
1459B
Move and Turn
dp
,
math
1300
x11578
1553B
Reverse String
brute force
,
dp
,
hashing
,
implementation
,
strings
1300
x11246
1178B
WOW Factor
dp
,
strings
1300
x11102
1661B
Getting Zero
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1300
x11021
1534C
Little Alawn's Puzzle
combinatorics
,
dp
,
dsu
,
graphs
,
math
1300
x10147
777B
Game of Credit Cards
data structures
,
dp
,
greedy
,
sortings
1300
x8577
628B
New Skateboard
dp
1300
x8485
870C
Maximum splitting
dp
,
greedy
,
math
,
number theory
1300
x8095
1315B
Homecoming
binary search
,
dp
,
greedy
,
strings
1300
x8035
798B
Mike and strings
brute force
,
dp
,
strings
1300
x7549
416B
Art Union
brute force
,
dp
,
implementation
1300
x7333
665C
Simple Strings
dp
,
greedy
,
strings
1300
x7302
1040B
Shashlik Cooking
dp
,
greedy
,
math
1300
x6591
1676G
White-Black Balanced Subtrees
dfs and similar
,
dp
,
graphs
,
trees
1300
x6212
626B
Cards
constructive algorithms
,
dp
,
math
1300
x5963
234C
Weather
dp
,
implementation
1300
x4560
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x4498
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x34267
698A
Vacations
dp
1400
x20498
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