Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Educational Codeforces Round 168 (Rated for Div. 2)
26:24:52
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
1139A
Even Substrings
implementation
,
strings
800
x16705
1136A
Nastya Is Reading a Book
implementation
800
x16273
1131A
Sea Battle
math
800
x12371
1130A
Be Positive
implementation
800
x11521
1118A
Water Buying
math
800
x19931
1114A
Got Any Grapes?
brute force
,
greedy
,
implementation
800
x18451
1108A
Two distinct points
implementation
800
x21567
1106A
Lunar New Year and Cross Counting
implementation
800
x12311
1104A
Splitting into digits
constructive algorithms
,
implementation
,
math
800
x15360
1102A
Integer Sequence Dividing
math
800
x23997
1099A
Snowball
implementation
800
x12839
1097A
Gennady and a Card Game
brute force
,
implementation
800
x38086
1096A
Find Divisible
greedy
,
implementation
,
math
800
x18625
1095A
Repeating Cipher
implementation
800
x30707
1093A
Dice Rolling
math
800
x17634
1092B
Teams Forming
sortings
800
x26037
1092A
Uniform String
implementation
800
x16125
1091A
New Year and the Christmas Ornament
brute force
,
implementation
,
math
800
x17401
1088A
Ehab and another construction problem
brute force
,
constructive algorithms
800
x16651
1085A
Right-Left Cipher
implementation
,
strings
800
x12098
1081A
Definite Game
constructive algorithms
,
math
800
x11981
1080A
Petya and Origami
math
800
x17953
1077A
Frog Jumping
math
800
x29644
1075A
The King's Race
implementation
,
math
800
x8429
1065A
Vasya and Chocolate
implementation
,
math
800
x14591
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x22124
1061A
Coins
greedy
,
implementation
,
math
800
x21583
1060A
Phone Numbers
brute force
800
x13955
1056A
Determine Line
implementation
800
x6581
1054A
Elevator or Stairs?
implementation
800
x9015
1047A
Little C Loves 3 I
math
800
x19742
1043A
Elections
implementation
,
math
800
x10735
1041A
Heist
greedy
,
implementation
,
sortings
800
x24777
1038A
Equality
implementation
,
strings
800
x14788
1031A
Golden Plate
implementation
,
math
800
x12828
1030A
In Search of an Easy Problem
implementation
800
x125074
1028A
Find Square
implementation
800
x10702
1017A
The Rank
implementation
800
x20214
1015A
Points in Segments
implementation
800
x20749
1013A
Piles With Stones
math
800
x10875
1009A
Game Shopping
implementation
800
x11693
1006A
Adjacent Replacements
implementation
800
x21430
1005A
Tanya and Stairways
implementation
800
x23368
1003A
Polycarp's Pockets
implementation
800
x26838
1002A1
Generate superposition of all basis states
800
x831
999A
Mishka and Contest
brute force
,
implementation
800
x22696
996A
Hit the Lottery
dp
,
greedy
800
x87515
994A
Fingerprints
implementation
800
x14018
992A
Nastya and an Array
implementation
,
sortings
800
x13006
988A
Diverse Team
brute force
,
implementation
800
x24469
987A
Infinity Gauntlet
implementation
800
x16411
984A
Game
sortings
800
x19253
978B
File Name
greedy
,
strings
800
x35677
978A
Remove Duplicates
implementation
800
x26589
977A
Wrong Subtraction
implementation
800
x160979
976A
Minimum Binary Number
implementation
800
x10475
965A
Paper Airplanes
math
800
x9418
964A
Splits
math
800
x9185
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x45737
954A
Diagonal Walking
implementation
800
x10437
952A
Quirky Quantifiers
math
800
x11179
950A
Left-handers, Right-handers and Ambidexters
implementation
,
math
800
x15101
946A
Partition
greedy
800
x16205
939A
Love Triangle
graphs
800
x24718
938A
Word Correction
implementation
800
x11389
937A
Olympiad
implementation
,
sortings
800
x14958
935A
Fafa and his Company
brute force
,
implementation
800
x42311
932A
Palindromic Supersequence
constructive algorithms
800
x10227
931A
Friends Meeting
brute force
,
greedy
,
implementation
,
math
800
x11804
919A
Supermarket
brute force
,
greedy
,
implementation
800
x16039
918A
Eleven
brute force
,
implementation
800
x16899
912A
Tricky Alchemy
implementation
800
x13380
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x11686
908A
New Year and Counting Cards
brute force
,
implementation
800
x14683
900A
Find Extra One
geometry
,
implementation
800
x13486
899A
Splitting in Teams
constructive algorithms
,
greedy
,
math
800
x10130
898A
Rounding
implementation
,
math
800
x15853
897A
Scarborough Fair
implementation
800
x14057
894A
QAQ
brute force
,
dp
800
x33657
888A
Local Extrema
brute force
,
implementation
800
x10772
884A
Book Reading
implementation
800
x10387
873A
Chores
implementation
800
x8114
867A
Between the Offices
implementation
800
x19054
859A
Declined Finalists
greedy
,
implementation
800
x7655
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x20772
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13518
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9609
837A
Text Volume
implementation
800
x9306
835A
Key races
math
800
x20072
832A
Sasha and Sticks
games
,
math
800
x20541
831B
Keyboard Layouts
implementation
,
strings
800
x14200
822A
I'm bored with life
implementation
,
math
,
number theory
800
x32453
821A
Okabe and Future Gadget Laboratory
implementation
800
x7965
818A
Diplomas and Certificates
implementation
,
math
800
x6849
811A
Vladik and Courtesy
brute force
,
implementation
800
x11827
802G
Fake News (easy)
implementation
,
strings
800
x6837
796A
Buying A House
brute force
,
implementation
800
x12926
794A
Bank Robbery
brute force
,
implementation
800
x6966
791A
Bear and Big Brother
implementation
800
x186466
785A
Anton and Polyhedrons
implementation
,
strings
800
x85650
←
1
2
...
5
6
7
8
9
→
User lists
Name