Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Rayan
→ Pay attention
Before contest
Codeforces Round 1002 (Div. 2)
3 days
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
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
Add tag
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4966
160E
Buses and People
binary search
,
data structures
,
sortings
2400
x599
160D
Edges in MST
dfs and similar
,
dsu
,
graphs
,
sortings
2300
x2856
160C
Find Pair
implementation
,
math
,
sortings
1700
x3477
160B
Unlucky Ticket
greedy
,
sortings
1100
x14281
160A
Twins
greedy
,
sortings
900
x122255
159E
Zebra Tower
*special problem
,
data structures
,
greedy
,
sortings
1700
x1008
159D
Palindrome pairs
*special problem
,
brute force
,
dp
,
strings
1500
x4346
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x3017
159B
Matchmaker
*special problem
,
greedy
,
sortings
1100
x3830
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2502
158E
Phone Talks
*special problem
,
dp
,
sortings
1900
x1466
158D
Ice Sculptures
*special problem
,
brute force
,
number theory
1300
x6271
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x9425
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x89585
158A
Next Round
*special problem
,
implementation
800
x262774
157B
Trace
geometry
,
sortings
1000
x13384
157A
Game Outcome
brute force
800
x7767
156E
Mrs. Hudson's Pancakes
brute force
,
dp
3000
x163
156D
Clues
combinatorics
,
graphs
2500
x1645
156C
Cipher
combinatorics
,
dp
2000
x2444
156B
Suspects
constructive algorithms
,
data structures
,
implementation
1600
x2258
156A
Message
brute force
1700
x3057
155B
Combination
greedy
,
sortings
1100
x10380
155A
I_love_\%username\%
brute force
800
x78603
154E
Martian Colony
geometry
3000
x99
154D
Flatland Fencing
games
,
math
2400
x438
154C
Double Profiles
graphs
,
hashing
,
sortings
2300
x2927
154B
Colliders
math
,
number theory
1600
x5008
154A
Hometask
greedy
1600
x4110
153E
Euclidean Distance
*special problem
2100
x81
153D
Date Change
*special problem
2000
x85
153C
Caesar Cipher
*special problem
2200
x393
153B
Binary notation
*special problem
1800
x159
153A
A + B
*special problem
1600
x874
152E
Garden
bitmasks
,
dp
,
graphs
,
trees
2500
x493
152D
Frames
brute force
2600
x248
152C
Pocket Book
combinatorics
1400
x10813
152B
Steps
binary search
,
implementation
1300
x6849
152A
Marks
implementation
900
x17094
151B
Phone Numbers
implementation
,
strings
1200
x6446
151A
Soft Drinking
implementation
,
math
800
x77562
150E
Freezing with Style
binary search
,
data structures
,
divide and conquer
,
trees
3000
x890
150D
Mission Impassable
dp
,
strings
2600
x629
150C
Smart Cheater
data structures
,
math
,
probabilities
2200
x647
150B
Quantity of Strings
combinatorics
,
dfs and similar
,
graphs
,
math
1600
x4361
150A
Win or Freeze
games
,
math
,
number theory
1400
x7993
149E
Martian Strings
string suffix structures
,
strings
2300
x2312
149D
Coloring Brackets
dp
1900
x3976
149C
Division into Teams
greedy
,
math
,
sortings
1500
x5435
149B
Martian Clock
implementation
1600
x2290
149A
Business trip
greedy
,
implementation
,
sortings
900
x40908
148E
Porcelain
dp
1900
x4159
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x7475
148C
Terse princess
constructive algorithms
,
greedy
1700
x3167
148B
Escape
implementation
,
math
1500
x5577
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x96428
147B
Smile House
binary search
,
graphs
,
matrices
2500
x818
147A
Punctuation
implementation
,
strings
1300
x3707
146B
Lucky Mask
brute force
,
implementation
1300
x4511
146A
Lucky Ticket
implementation
800
x15370
145E
Lucky Queries
data structures
2400
x3327
145D
Lucky Pair
combinatorics
,
data structures
,
implementation
2900
x248
145C
Lucky Subsequence
combinatorics
,
dp
,
math
2100
x1928
145B
Lucky Number 2
constructive algorithms
1800
x2243
145A
Lucky Conversion
greedy
,
implementation
1200
x7205
144E
Competition
data structures
,
greedy
2200
x606
144D
Missile Silos
data structures
,
dfs and similar
,
graphs
,
shortest paths
1900
x4107
144C
Anagram Search
implementation
,
strings
1500
x4048
144B
Meeting
implementation
1300
x5344
144A
Arrival of the General
implementation
800
x100343
143B
Help Kingdom of Far Far Away 2
implementation
,
strings
1200
x5027
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x14166
142E
Help Greg the Dwarf 2
geometry
3000
x81
142D
Help Shrek and Donkey 2
games
2600
x353
142C
Help Caretaker
brute force
,
dp
2300
x934
142B
Help General
constructive algorithms
,
greedy
,
implementation
1800
x2262
142A
Help Farmer
brute force
,
math
1600
x2654
141E
Clearing Up
constructive algorithms
,
dp
,
dsu
,
graphs
2300
x1145
141D
Take-off Ramps
graphs
,
shortest paths
2300
x919
141C
Queue
constructive algorithms
,
greedy
,
sortings
1800
x2497
141B
Hopscotch
geometry
,
math
1400
x5451
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x86671
140F
New Year Snowflake
geometry
,
sortings
2600
x378
140E
New Year Garland
combinatorics
,
dp
2600
x964
140D
New Year Contest
greedy
,
sortings
1800
x2220
140C
New Year Snowmen
binary search
,
data structures
,
greedy
1800
x4419
140B
New Year Cards
brute force
,
greedy
,
implementation
1800
x1688
140A
New Year Table
geometry
,
math
1700
x4181
139B
Wallpaper
implementation
,
math
1600
x1328
139A
Petr and Book
implementation
1000
x32474
138E
Hellish Constraints
brute force
,
dp
,
two pointers
2900
x175
138D
World of Darkraft
dp
,
games
2500
x504
138C
Mushroom Gnomes - 2
binary search
,
data structures
,
probabilities
,
sortings
2200
x880
138B
Digits Permutations
greedy
1900
x1041
138A
Literature Lesson
implementation
1600
x2409
137E
Last Chance
data structures
,
implementation
,
strings
2000
x1256
137D
Palindromes
dp
,
strings
1900
x1531
137C
History
sortings
1500
x7332
137B
Permutation
greedy
1000
x13891
←
1
2
...
93
94
95
96
97
...
101
102
→
User lists
Name