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Before contest
Codeforces Round #607 (Div. 1)
01:00:49
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Before contest
Codeforces Round #607 (Div. 2)
01:00:51
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Before contest
Codeforces Round #608 (Div. 2)
05:00:49
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greedy
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
#
Name
116B
Little Pigs and Wolves
greedy
,
implementation
1300
x6551
115B
Lawnmower
greedy
,
sortings
1600
x1793
111A
Petya and Inequiations
greedy
1500
x3114
103C
Russian Roulette
constructive algorithms
,
greedy
1900
x701
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1200
x3434
101D
Castle
dp
,
greedy
,
probabilities
,
sortings
,
trees
2300
x344
101A
Homework
greedy
1300
x2372
100J
Interval Coloring
*special problem
,
greedy
,
math
2400
x36
95B
Lucky Numbers
dp
,
greedy
1800
x750
93B
End of Exams
greedy
1900
x661
92B
Binary Number
greedy
1300
x2768
91D
Grocer's Problem
constructive algorithms
,
graphs
,
greedy
2500
x203
89E
Fire and Ice
greedy
2900
x45
90A
Cableway
greedy
,
math
1000
x2558
89A
Robbery
greedy
1800
x1126
91A
Newspaper Headline
greedy
,
strings
1600
x2108
86B
Tetris revisited
constructive algorithms
,
graph matchings
,
greedy
,
math
2100
x280
85B
Embassy Queue
data structures
,
greedy
1800
x826
83C
Track
graphs
,
greedy
,
shortest paths
2400
x319
81D
Polycarp's Picture Gallery
constructive algorithms
,
greedy
2000
x522
81C
Average Score
greedy
,
math
,
sortings
1700
x1200
79C
Beaver
data structures
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x1136
79A
Bus Game
greedy
1300
x2552
77C
Beavermuncher-0xFF
dfs and similar
,
dp
,
dsu
,
greedy
,
trees
2300
x660
74B
Train
dp
,
games
,
greedy
1600
x1061
75D
Big Maximum Sum
data structures
,
dp
,
greedy
,
implementation
,
math
,
trees
2100
x937
76D
Plus and xor
dp
,
greedy
,
math
1800
x1030
76B
Mice
greedy
,
two pointers
2200
x288
73D
FreeDiv
dfs and similar
,
graphs
,
greedy
2200
x388
73B
Need For Brake
binary search
,
greedy
,
sortings
2000
x369
73A
The Elder Trolls IV: Oblivon
greedy
,
math
1600
x971
70B
Text Messaging
expression parsing
,
greedy
,
strings
1600
x1287
69B
Bets
greedy
,
implementation
1300
x1847
72F
Oil
*special problem
,
greedy
,
math
2100
x78
72A
Goshtasp, Vishtasp and Eidi
*special problem
,
greedy
,
math
1900
x121
67B
Restoration of the Permutation
greedy
1800
x559
67A
Partial Teacher
dp
,
graphs
,
greedy
,
implementation
1800
x1313
65B
Harry Potter and the History of Magic
brute force
,
greedy
,
implementation
1700
x1005
62A
A Student's Dream
greedy
,
math
1400
x2261
61D
Eternal Victory
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
1900
x2679
64D
Presents
*special problem
,
greedy
1900
x219
64C
Table
*special problem
,
greedy
,
implementation
,
math
1700
x242
59D
Team Arrangement
constructive algorithms
,
greedy
,
implementation
2200
x388
58D
Calendar
greedy
,
strings
2000
x466
58B
Coins
greedy
1300
x5282
58A
Chat room
greedy
,
strings
1100
x39233
57A
Square Earth?
dfs and similar
,
greedy
,
implementation
1400
x1764
51C
Three Base Stations
binary search
,
greedy
1800
x835
50A
Domino piling
greedy
,
math
800
x57145
48F
Snow sellers
greedy
,
sortings
2600
x66
48D
Permutations
greedy
1500
x1288
43C
Lucky Tickets
greedy
1400
x2611
42A
Guilty --- to the kitchen!
greedy
,
implementation
1500
x1590
45I
TCMCF+++
greedy
1500
x989
45F
Goats and Wolves
greedy
2600
x62
45E
Director
constructive algorithms
,
greedy
2100
x377
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x833
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1103
44J
Triminoes
constructive algorithms
,
greedy
2000
x400
37E
Trial for Chief
graphs
,
greedy
,
shortest paths
2600
x332
37C
Old Berland Language
data structures
,
greedy
,
trees
1900
x767
37B
Computer Game
greedy
,
implementation
1800
x661
39B
Company Income Growth
greedy
1200
x1413
39A
C*++ Calculations
expression parsing
,
greedy
2100
x493
35D
Animals
dp
,
greedy
1700
x1490
34B
Sale
greedy
,
sortings
1000
x12388
33C
Wonderful Randomized Sum
greedy
1800
x1410
33A
What is for dinner?
greedy
,
implementation
1300
x2091
31B
Sysadmin Bob
greedy
,
implementation
,
strings
1500
x2057
30E
Tricky and Clever Password
binary search
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
strings
2700
x350
30D
King's Problem?
geometry
,
greedy
2600
x293
27C
Unordered Subsequence
constructive algorithms
,
greedy
2000
x1570
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
2000
x2253
26B
Regular Bracket Sequence
greedy
2300
x5075
23A
You're Given a String...
brute force
,
greedy
1200
x2424
22D
Segments
greedy
,
sortings
1900
x1210
19C
Deletion of Repeats
greedy
,
hashing
,
string suffix structures
2200
x585
18D
Seller Bob
brute force
,
dp
,
greedy
2100
x701
17B
Hierarchy
dfs and similar
,
dsu
,
greedy
,
shortest paths
1600
x1847
16B
Burglar and Matches
greedy
,
implementation
,
sortings
1300
x4969
12C
Fruits
greedy
,
implementation
,
sortings
1400
x2741
11E
Forward, march!
binary search
,
dp
,
greedy
2800
x127
6C
Alice, Bob and Chocolate
greedy
,
two pointers
1500
x5351
5C
Longest Regular Bracket Sequence
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
,
strings
1900
x4575
4B
Before an Exam
constructive algorithms
,
greedy
1500
x9012
3D
Least Cost Bracket Sequence
greedy
2500
x1614
3B
Lorry
greedy
,
sortings
1900
x2291
3A
Shortest path of the king
greedy
,
shortest paths
1200
x9525
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