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Codeforces Round 941 (Div. 1)
4 days
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Before contest
Codeforces Round 941 (Div. 2)
4 days
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2-sat
binary search
bitmasks
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combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
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geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
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Problems
#
Name
501C
Misha and Forest
constructive algorithms
,
data structures
,
greedy
,
sortings
,
trees
1500
x5504
985C
Liebig's Barrels
greedy
1500
x5570
1000B
Light It Up
greedy
1500
x5581
853A
Planning
greedy
1500
x5764
864C
Bus
greedy
,
implementation
,
math
1500
x5824
749C
Voting
greedy
,
implementation
,
two pointers
1500
x5906
864D
Make a Permutation!
greedy
,
implementation
,
math
1500
x5953
760B
Frodo and pillows
binary search
,
greedy
1500
x6041
494A
Treasure
greedy
1500
x6095
415B
Mashmokh and Tokens
binary search
,
greedy
,
implementation
,
math
1500
x6109
1181B
Split a Number
greedy
,
implementation
,
strings
1500
x6172
976C
Nested Segments
greedy
,
implementation
,
sortings
1500
x6262
620C
Pearls in a Row
greedy
1500
x6324
166C
Median
greedy
,
math
,
sortings
1500
x6330
1119C
Ramesses and Corner Inversion
constructive algorithms
,
greedy
,
implementation
,
math
1500
x6556
821C
Okabe and Boxes
data structures
,
greedy
,
trees
1500
x6569
771B
Bear and Different Names
constructive algorithms
,
greedy
1500
x6625
1167D
Bicolored RBS
constructive algorithms
,
greedy
1500
x6706
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x6721
1043C
Smallest Word
constructive algorithms
,
greedy
,
implementation
1500
x6772
991D
Bishwock
dp
,
greedy
1500
x6996
1178D
Prime Graph
constructive algorithms
,
greedy
,
math
,
number theory
1500
x7135
1209C
Paint the Digits
constructive algorithms
,
greedy
,
implementation
1500
x7215
960B
Minimize the error
data structures
,
greedy
,
sortings
1500
x7347
587A
Duff and Weight Lifting
greedy
1500
x7354
863B
Kayaking
brute force
,
greedy
,
sortings
1500
x7532
468A
24 Game
constructive algorithms
,
greedy
,
math
1500
x7742
1102D
Balanced Ternary String
greedy
,
strings
1500
x7804
845C
Two TVs
data structures
,
greedy
,
sortings
1500
x7851
1066B
Heaters
greedy
,
two pointers
1500
x8051
997A
Convert to Ones
brute force
,
greedy
,
implementation
,
math
1500
x8149
1141D
Colored Boots
greedy
,
implementation
1500
x8333
1062B
Math
greedy
,
math
,
number theory
1500
x8386
1323B
Count Subrectangles
binary search
,
greedy
,
implementation
1500
x8443
1186D
Vus the Cossack and Numbers
constructive algorithms
,
greedy
,
math
1500
x8696
1114B
Yet Another Array Partitioning Task
constructive algorithms
,
greedy
,
sortings
1500
x8840
1051C
Vasya and Multisets
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9122
437B
The Child and Set
bitmasks
,
greedy
,
implementation
,
sortings
1500
x9130
1767D
Playoff
combinatorics
,
constructive algorithms
,
dp
,
greedy
,
math
1500
x9372
1180B
Nick and Array
greedy
,
implementation
1500
x9400
1207C
Gas Pipeline
dp
,
greedy
1500
x9528
891A
Pride
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x9574
1659C
Line Empire
binary search
,
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9600
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x9733
1154D
Walking Robot
greedy
1500
x9738
1753A2
Make Nonzero Sum (hard version)
constructive algorithms
,
dp
,
greedy
1500
x9740
1005D
Polycarp and Div 3
dp
,
greedy
,
number theory
1500
x9785
1264A
Beautiful Regional Contest
greedy
,
implementation
1500
x9827
274A
k-Multiple Free Set
binary search
,
greedy
,
sortings
1500
x9830
1883D
In Love
data structures
,
greedy
1500
x9840
1313C1
Skyscrapers (easy version)
brute force
,
data structures
,
dp
,
greedy
1500
x10042
1675E
Replace With the Previous, Minimize
dsu
,
greedy
,
strings
1500
x10054
1814C
Search in Parallel
constructive algorithms
,
greedy
,
sortings
1500
x10120
1579C
Ticks
greedy
,
implementation
1500
x10239
1722G
Even-Odd XOR
bitmasks
,
constructive algorithms
,
greedy
1500
x10249
1817A
Almost Increasing Subsequence
binary search
,
data structures
,
greedy
1500
x10260
1898B
Milena and Admirer
greedy
,
math
1500
x10367
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x10482
1858B
The Walkway
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10558
1710A
Color the Picture
constructive algorithms
,
greedy
,
math
1500
x10568
1742F
Smaller
constructive algorithms
,
greedy
,
strings
1500
x10708
982C
Cut 'em all!
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1500
x10745
1466D
13th Labour of Heracles
data structures
,
greedy
,
sortings
,
trees
1500
x10754
1215C
Swap Letters
constructive algorithms
,
greedy
1500
x10788
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x11136
1515D
Phoenix and Socks
greedy
,
sortings
,
two pointers
1500
x11137
1882C
Card Game
brute force
,
greedy
1500
x11211
1760F
Quests
binary search
,
greedy
,
sortings
1500
x11215
1804C
Pull Your Luck
brute force
,
greedy
,
math
,
number theory
1500
x11454
1774B
Coloring
constructive algorithms
,
greedy
,
math
1500
x11505
1873G
ABBC or BACB
constructive algorithms
,
greedy
1500
x11554
1256D
Binary String Minimizing
greedy
1500
x11691
1299A
Anu Has a Function
brute force
,
greedy
,
math
1500
x11738
1809C
Sum on Subarrays
constructive algorithms
,
greedy
,
math
1500
x11849
1800E2
Unforgivable Curse (hard version)
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
strings
1500
x11972
1924A
Did We Get Everything Covered?
constructive algorithms
,
dp
,
greedy
,
shortest paths
,
strings
1500
x12152
1249C2
Good Numbers (hard version)
binary search
,
greedy
,
math
,
meet-in-the-middle
1500
x12191
1499C
Minimum Grid Path
brute force
,
data structures
,
greedy
,
math
1500
x12311
282B
Painting Eggs
greedy
,
math
1500
x12526
1325C
Ehab and Path-etic MEXs
constructive algorithms
,
dfs and similar
,
greedy
,
trees
1500
x12845
1551C
Interesting Story
greedy
,
sortings
,
strings
1500
x12851
1278B
A and B
greedy
,
math
1500
x12861
1621B
Integers Shop
data structures
,
greedy
,
implementation
1500
x13062
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x13120
1366C
Palindromic Paths
greedy
,
math
1500
x13126
1340A
Nastya and Strange Generator
brute force
,
data structures
,
greedy
,
implementation
1500
x13135
1553D
Backspace
dp
,
greedy
,
strings
,
two pointers
1500
x13280
1203E
Boxers
greedy
,
sortings
1500
x13363
1487C
Minimum Ties
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
1500
x13659
1253C
Sweets Eating
dp
,
greedy
,
math
,
sortings
1500
x13780
1301B
Motarack's Birthday
binary search
,
greedy
,
ternary search
1500
x13828
1296D
Fight with Monsters
greedy
,
sortings
1500
x13844
1106D
Lunar New Year and a Wander
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1500
x13869
1690E
Price Maximization
binary search
,
greedy
,
math
,
two pointers
1500
x14435
1419D2
Sage's Birthday (hard version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x14638
1419C
Killjoy
greedy
,
implementation
,
math
1500
x14869
1552B
Running for Gold
combinatorics
,
graphs
,
greedy
,
sortings
1500
x14936
1490F
Equalize the Array
binary search
,
data structures
,
greedy
,
math
,
sortings
1500
x15388
1426D
Non-zero Segments
constructive algorithms
,
data structures
,
greedy
,
sortings
1500
x15443
1492C
Maximum width
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1500
x15529
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