Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Rayan
→ Pay attention
Before contest
Educational Codeforces Round 173 (Rated for Div. 2)
44:41:09
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
994A
Fingerprints
implementation
800
x14284
992A
Nastya and an Array
implementation
,
sortings
800
x13306
988A
Diverse Team
brute force
,
implementation
800
x25484
987A
Infinity Gauntlet
implementation
800
x16739
984A
Game
sortings
800
x19625
978B
File Name
greedy
,
strings
800
x36922
978A
Remove Duplicates
implementation
800
x27523
977A
Wrong Subtraction
implementation
800
x174548
976A
Minimum Binary Number
implementation
800
x10584
965A
Paper Airplanes
math
800
x9615
964A
Splits
math
800
x9738
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x48473
954A
Diagonal Walking
implementation
800
x10571
952A
Quirky Quantifiers
math
800
x11370
950A
Left-handers, Right-handers and Ambidexters
implementation
,
math
800
x15455
946A
Partition
greedy
800
x16744
939A
Love Triangle
graphs
800
x25789
938A
Word Correction
implementation
800
x11531
937A
Olympiad
implementation
,
sortings
800
x15298
935A
Fafa and his Company
brute force
,
implementation
800
x43672
932A
Palindromic Supersequence
constructive algorithms
800
x10330
931A
Friends Meeting
brute force
,
greedy
,
implementation
,
math
800
x12271
919A
Supermarket
brute force
,
greedy
,
implementation
800
x16185
918A
Eleven
brute force
,
implementation
800
x17266
912A
Tricky Alchemy
implementation
800
x13563
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x12235
908A
New Year and Counting Cards
brute force
,
implementation
800
x14885
900A
Find Extra One
geometry
,
implementation
800
x13695
899A
Splitting in Teams
constructive algorithms
,
greedy
,
math
800
x10304
898A
Rounding
implementation
,
math
800
x16462
897A
Scarborough Fair
implementation
800
x14354
894A
QAQ
brute force
,
dp
800
x35308
888A
Local Extrema
brute force
,
implementation
800
x11116
884A
Book Reading
implementation
800
x10546
873A
Chores
implementation
800
x8377
867A
Between the Offices
implementation
800
x19458
859A
Declined Finalists
greedy
,
implementation
800
x7805
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x22268
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13699
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9825
837A
Text Volume
implementation
800
x9521
835A
Key races
math
800
x20509
832A
Sasha and Sticks
games
,
math
800
x20934
831B
Keyboard Layouts
implementation
,
strings
800
x14589
822A
I'm bored with life
implementation
,
math
,
number theory
800
x33617
821A
Okabe and Future Gadget Laboratory
implementation
800
x8334
818A
Diplomas and Certificates
implementation
,
math
800
x7058
811A
Vladik and Courtesy
brute force
,
implementation
800
x11962
802G
Fake News (easy)
implementation
,
strings
800
x7117
796A
Buying A House
brute force
,
implementation
800
x13118
794A
Bank Robbery
brute force
,
implementation
800
x7124
791A
Bear and Big Brother
implementation
800
x202912
785A
Anton and Polyhedrons
implementation
,
strings
800
x91688
780A
Andryusha and Socks
implementation
800
x20019
770A
New Password
*special problem
,
implementation
800
x20143
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5823
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16404
760A
Petr and a calendar
implementation
,
math
800
x8260
758A
Holiday Of Equality
implementation
,
math
800
x62540
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x18238
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x77596
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x50401
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x9030
747A
Display Size
brute force
,
math
800
x10324
746A
Compote
implementation
,
math
800
x21905
735A
Ostap and Grasshopper
implementation
,
strings
800
x12568
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x29597
734A
Anton and Danik
implementation
,
strings
800
x158181
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x74169
731A
Night at the Museum
implementation
,
strings
800
x46710
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x81033
721A
One-dimensional Japanese Crossword
implementation
800
x18657
716A
Crazy Computer
implementation
800
x22561
712A
Memory and Crow
implementation
,
math
800
x11945
711A
Bus to Udayland
brute force
,
implementation
800
x29653
710A
King Moves
implementation
800
x13893
707A
Brain's Photos
implementation
800
x49989
705A
Hulk
implementation
800
x110006
703A
Mishka and Game
implementation
800
x57711
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x46063
701A
Cards
greedy
,
implementation
800
x19766
688A
Opponents
implementation
800
x14048
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x38248
681A
A Good Contest
implementation
800
x15686
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12577
678A
Johny Likes Numbers
implementation
,
math
800
x13430
677A
Vanya and Fence
implementation
800
x146389
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13875
673A
Bear and Game
implementation
800
x10115
672A
Summer Camp
implementation
800
x15447
669A
Little Artem and Presents
math
800
x10911
664A
Complicated GCD
math
,
number theory
800
x18657
658A
Bear and Reverse Radewoosh
implementation
800
x7113
648B
Собери стол
constructive algorithms
,
sortings
800
x1622
630A
Again Twenty Five!
number theory
800
x71234
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13586
624A
Save Luke
math
800
x10538
620A
Professor GukiZ's Robot
implementation
,
math
800
x13342
618A
Slime Combining
implementation
800
x8406
617A
Elephant
math
800
x193549
←
1
2
...
6
7
8
9
10
→
User lists
Name