Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 973 (Div. 2)
3 days
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
implementation
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
959B
Mahmoud and Ehab and the message
dsu
,
greedy
,
implementation
1200
x9574
958F1
Lightsabers (easy)
implementation
1500
x1606
958B1
Maximum Control (easy)
implementation
1000
x3401
958A1
Death Stars (easy)
implementation
1400
x1653
957A
Tritonic Iridescence
implementation
1300
x5748
955B
Not simply beatiful strings
implementation
1400
x4809
954C
Matrix Walk
implementation
1700
x3774
954B
String Typing
implementation
,
strings
1400
x7235
954A
Diagonal Walking
implementation
800
x10489
952C
Ravioli Sort
implementation
1600
x2900
950B
Intercepted Message
greedy
,
implementation
1100
x7566
950A
Left-handers, Right-handers and Ambidexters
implementation
,
math
800
x15220
948A
Protect Sheep
brute force
,
dfs and similar
,
graphs
,
implementation
900
x13681
946E
Largest Beautiful Number
greedy
,
implementation
2200
x1092
940D
Alena And The Heater
binary search
,
implementation
1600
x3612
940C
Phone Numbers
constructive algorithms
,
implementation
,
strings
1500
x5780
939B
Hamster Farm
implementation
1000
x10479
938A
Word Correction
implementation
800
x11421
937A
Olympiad
implementation
,
sortings
800
x15124
936C
Lock Puzzle
constructive algorithms
,
implementation
,
strings
2300
x1170
936A
Save Energy!
binary search
,
implementation
,
math
1700
x4360
935B
Fafa and the Gates
implementation
900
x11520
935A
Fafa and his Company
brute force
,
implementation
800
x42719
934B
A Prosperous Lot
constructive algorithms
,
implementation
1200
x8648
931C
Laboratory Work
implementation
,
math
1700
x3345
931B
World Cup
constructive algorithms
,
implementation
1200
x7095
931A
Friends Meeting
brute force
,
greedy
,
implementation
,
math
800
x11890
930D
Game with Tokens
data structures
,
games
,
implementation
2500
x404
930B
Game with String
implementation
,
probabilities
,
strings
1600
x2648
929B
Места в самолёте
*special problem
,
implementation
1300
x2040
929A
Прокат велосипедов
*special problem
,
greedy
,
implementation
1400
x2495
928C
Dependency management
*special problem
,
graphs
,
implementation
1900
x885
926C
Is This a Zebra?
implementation
1700
x1880
926A
2-3-numbers
implementation
,
math
1300
x3742
925B
Resource Distribution
binary search
,
implementation
,
sortings
1700
x2199
924A
Mystical Mosaic
greedy
,
implementation
1300
x5039
923D
Picking Strings
constructive algorithms
,
implementation
,
strings
2500
x1189
922A
Cloning Toys
implementation
1300
x11511
920D
Tanks
dp
,
greedy
,
implementation
2400
x708
920B
Tea Queue
implementation
1200
x7289
920A
Water The Garden
implementation
1000
x7706
919C
Seat Arrangements
brute force
,
implementation
1300
x8956
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x27957
919A
Supermarket
brute force
,
greedy
,
implementation
800
x16088
918B
Radio Station
implementation
,
strings
900
x16322
918A
Eleven
brute force
,
implementation
800
x16984
917A
The Monster
dp
,
greedy
,
implementation
,
math
1800
x3505
916A
Jamie and Alarm Snooze
brute force
,
implementation
,
math
900
x8578
915E
Physical Education Lessons
data structures
,
implementation
,
sortings
2300
x4316
915B
Browser
implementation
1300
x7721
915A
Garden
implementation
900
x14641
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x8598
914A
Perfect Squares
brute force
,
implementation
,
math
900
x14025
913B
Christmas Spruce
implementation
,
trees
1200
x15968
913A
Modular Exponentiation
implementation
,
math
900
x21148
912A
Tricky Alchemy
implementation
800
x13449
911E
Stack Sorting
constructive algorithms
,
data structures
,
greedy
,
implementation
2000
x2523
911B
Two Cakes
binary search
,
brute force
,
implementation
1200
x11335
911A
Nearest Minimums
implementation
1100
x11430
910B
Door Frames
greedy
,
implementation
1600
x1697
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x11784
909D
Colorful Points
data structures
,
greedy
,
implementation
2100
x1930
908F
New Year and Rainbow Roads
graphs
,
greedy
,
implementation
2400
x1389
908C
New Year and Curling
brute force
,
geometry
,
implementation
,
math
1500
x6901
908B
New Year and Buggy Bot
brute force
,
implementation
1200
x7637
908A
New Year and Counting Cards
brute force
,
implementation
800
x14785
907B
Tic-Tac-Toe
implementation
1400
x4057
907A
Masha and Bears
brute force
,
implementation
1300
x5682
906A
Shockers
implementation
,
strings
1600
x4118
903E
Swapping Characters
brute force
,
hashing
,
implementation
,
strings
2200
x1461
903B
The Modcrab
greedy
,
implementation
1200
x7723
903A
Hungry Student Problem
greedy
,
implementation
900
x14560
902A
Visiting a Friend
greedy
,
implementation
1100
x9793
900A
Find Extra One
geometry
,
implementation
800
x13552
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x3019
899B
Months and Years
implementation
1200
x5860
898C
Phone Numbers
implementation
,
strings
1400
x5264
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9533
898A
Rounding
implementation
,
math
800
x16017
897A
Scarborough Fair
implementation
800
x14143
895A
Pizza Separation
brute force
,
implementation
1200
x6522
893D
Credit Card
data structures
,
dp
,
greedy
,
implementation
1900
x3030
893B
Beautiful Divisors
brute force
,
implementation
1000
x11310
893A
Chess For Three
implementation
900
x10160
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8884
892A
Greed
greedy
,
implementation
900
x13420
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8207
888A
Local Extrema
brute force
,
implementation
800
x10909
887C
Solution for Cube
brute force
,
implementation
1500
x2885
887B
Cubes for Masha
brute force
,
implementation
1300
x5614
887A
Div. 64
implementation
1000
x11212
886D
Restoration of string
constructive algorithms
,
graphs
,
implementation
2000
x1776
886C
Petya and Catacombs
dsu
,
greedy
,
implementation
,
trees
1300
x5466
884B
Japanese Crosswords Strike Back
implementation
1100
x6865
884A
Book Reading
implementation
800
x10440
883K
Road Widening
constructive algorithms
,
greedy
,
implementation
1800
x1086
883H
Palindromic Cut
brute force
,
implementation
,
strings
1800
x1610
883F
Lost in Transliteration
implementation
1300
x2263
883E
Field of Wonders
implementation
,
strings
1500
x1894
883C
Downloading B++
binary search
,
implementation
2300
x626
←
1
2
...
13
14
15
16
17
...
27
28
→
User lists
Name