Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 950 (Div. 3)
13:39:21
Register now »
→ 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
162I
Truncatable primes
*special problem
2000
x74
162H
Alternating case
*special problem
1800
x214
162G
Non-decimal sum
*special problem
2000
x57
162F
Factorial zeros
*special problem
1800
x196
162E
HQ9+
*special problem
1800
x175
162D
Remove digits
*special problem
1900
x226
162C
Prime factorization
*special problem
1800
x774
162B
Binary notation
*special problem
1800
x309
162A
Pentagonal numbers
*special problem
,
implementation
1100
x796
161E
Polycarpus the Safecracker
brute force
,
dp
2500
x463
161D
Distance in Tree
dfs and similar
,
dp
,
trees
1800
x13747
161C
Abracadabra
divide and conquer
2400
x640
161B
Discounts
constructive algorithms
,
greedy
,
sortings
1700
x1925
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4694
160E
Buses and People
binary search
,
data structures
,
sortings
2400
x577
160D
Edges in MST
dfs and similar
,
dsu
,
graphs
,
sortings
2300
x2380
160C
Find Pair
implementation
,
math
,
sortings
1700
x3386
160B
Unlucky Ticket
greedy
,
sortings
1100
x13628
160A
Twins
greedy
,
sortings
900
x111819
159E
Zebra Tower
*special problem
,
data structures
,
greedy
,
sortings
1700
x992
159D
Palindrome pairs
*special problem
,
brute force
,
dp
,
strings
1500
x4259
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2923
159B
Matchmaker
*special problem
,
greedy
,
sortings
1100
x3686
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2459
158E
Phone Talks
*special problem
,
dp
,
sortings
1900
x1452
158D
Ice Sculptures
*special problem
,
brute force
,
number theory
1300
x6185
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x8927
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x83064
158A
Next Round
*special problem
,
implementation
800
x234760
157B
Trace
geometry
,
sortings
1000
x12910
157A
Game Outcome
brute force
800
x7435
156E
Mrs. Hudson's Pancakes
brute force
,
dp
3000
x161
156D
Clues
combinatorics
,
graphs
2500
x1482
156C
Cipher
combinatorics
,
dp
2000
x2298
156B
Suspects
constructive algorithms
,
data structures
,
implementation
1600
x2193
156A
Message
brute force
1700
x2999
155B
Combination
greedy
,
sortings
1100
x10044
155A
I_love_\%username\%
brute force
800
x71273
154E
Martian Colony
geometry
3000
x90
154D
Flatland Fencing
games
,
math
2400
x419
154C
Double Profiles
graphs
,
hashing
,
sortings
2300
x2698
154B
Colliders
math
,
number theory
1600
x4310
154A
Hometask
greedy
1600
x3999
153E
Euclidean Distance
*special problem
2100
x74
153D
Date Change
*special problem
2000
x82
153C
Caesar Cipher
*special problem
2200
x365
153B
Binary notation
*special problem
1800
x153
153A
A + B
*special problem
1600
x762
152E
Garden
bitmasks
,
dp
,
graphs
,
trees
2500
x463
152D
Frames
brute force
2600
x240
152C
Pocket Book
combinatorics
1400
x10339
152B
Steps
binary search
,
implementation
1300
x6372
152A
Marks
implementation
900
x16275
151B
Phone Numbers
implementation
,
strings
1200
x6240
151A
Soft Drinking
implementation
,
math
800
x66826
150E
Freezing with Style
binary search
,
data structures
,
divide and conquer
,
trees
3000
x792
150D
Mission Impassable
dp
,
strings
2600
x589
150C
Smart Cheater
data structures
,
math
,
probabilities
2200
x631
150B
Quantity of Strings
combinatorics
,
dfs and similar
,
graphs
,
math
1600
x3983
150A
Win or Freeze
games
,
math
,
number theory
1400
x7608
149E
Martian Strings
string suffix structures
,
strings
2300
x1974
149D
Coloring Brackets
dp
1900
x3600
149C
Division into Teams
greedy
,
math
,
sortings
1500
x5277
149B
Martian Clock
implementation
1600
x2228
149A
Business trip
greedy
,
implementation
,
sortings
900
x38069
148E
Porcelain
dp
1900
x3804
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6835
148C
Terse princess
constructive algorithms
,
greedy
1700
x3071
148B
Escape
implementation
,
math
1500
x5298
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87911
147B
Smile House
binary search
,
graphs
,
matrices
2500
x747
147A
Punctuation
implementation
,
strings
1300
x3564
146B
Lucky Mask
brute force
,
implementation
1300
x4243
146A
Lucky Ticket
implementation
800
x14688
145E
Lucky Queries
data structures
2400
x2958
145D
Lucky Pair
combinatorics
,
data structures
,
implementation
2900
x242
145C
Lucky Subsequence
combinatorics
,
dp
,
math
2100
x1890
145B
Lucky Number 2
constructive algorithms
1800
x2154
145A
Lucky Conversion
greedy
,
implementation
1200
x6967
144E
Competition
data structures
,
greedy
2200
x566
144D
Missile Silos
data structures
,
dfs and similar
,
graphs
,
shortest paths
1900
x3816
144C
Anagram Search
implementation
,
strings
1500
x3891
144B
Meeting
implementation
1300
x5068
144A
Arrival of the General
implementation
800
x89980
143B
Help Kingdom of Far Far Away 2
implementation
,
strings
1200
x4923
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x13147
142E
Help Greg the Dwarf 2
geometry
3000
x80
142D
Help Shrek and Donkey 2
games
2600
x339
142C
Help Caretaker
brute force
,
dp
2300
x903
142B
Help General
constructive algorithms
,
greedy
,
implementation
1800
x2140
142A
Help Farmer
brute force
,
math
1600
x2580
141E
Clearing Up
constructive algorithms
,
dp
,
dsu
,
graphs
2300
x867
141D
Take-off Ramps
graphs
,
shortest paths
2300
x884
141C
Queue
constructive algorithms
,
greedy
,
sortings
1800
x2374
141B
Hopscotch
geometry
,
math
1400
x5152
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x78604
140F
New Year Snowflake
geometry
,
sortings
2600
x362
140E
New Year Garland
combinatorics
,
dp
2600
x875
140D
New Year Contest
greedy
,
sortings
1800
x2196
140C
New Year Snowmen
binary search
,
data structures
,
greedy
1800
x4205
←
1
2
...
87
88
89
90
91
...
95
96
→
User lists
Name