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)
39:30:59
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
1504A
Déjà Vu
constructive algorithms
,
strings
800
x21832
1501A
Alexey and Train
implementation
800
x11664
1499A
Domino on Windowsill
combinatorics
,
constructive algorithms
,
math
800
x21335
1498A
GCD Sum
brute force
,
math
800
x23434
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x24609
1493A
Anti-knapsack
constructive algorithms
,
greedy
800
x19392
1492A
Three swimmers
math
800
x22800
1491A
K-th Largest Value
brute force
,
greedy
,
implementation
800
x18323
1490A
Dense Array
greedy
,
math
800
x31395
1487A
Arena
implementation
,
sortings
800
x26640
1482A
Prison Break
math
800
x20563
1481A
Space Navigation
greedy
,
strings
800
x25040
1480A
Yet Another String Game
games
,
greedy
,
strings
800
x26031
1478A
Nezzar and Colorful Balls
brute force
,
greedy
800
x26679
1474A
Puzzle From the Future
greedy
800
x22672
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x34133
1472B
Fair Division
dp
,
greedy
,
math
800
x51860
1472A
Cards for Friends
greedy
,
math
800
x42451
1468E
Four Segments
greedy
800
x8907
1466B
Last minute enhancements
dp
,
greedy
800
x22769
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22644
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x27619
1462A
Favorite Sequence
implementation
,
two pointers
800
x42586
1461A
String Generation
constructive algorithms
,
greedy
800
x18624
1459A
Red-Blue Shuffle
math
,
probabilities
800
x17069
1455A
Strange Functions
math
,
number theory
800
x26585
1454B
Unique Bid Auction
implementation
800
x28740
1454A
Special Permutation
constructive algorithms
,
probabilities
800
x41018
1453A
Cancel the Trains
implementation
800
x22741
1452C
Two Brackets
greedy
800
x19787
1452A
Robot Program
math
800
x22213
1451A
Subtract or Divide
greedy
,
math
800
x24390
1450A
Avoid Trygub
constructive algorithms
,
sortings
800
x18055
1447A
Add Candies
constructive algorithms
,
math
800
x13877
1445A
Array Rearrangment
greedy
,
sortings
800
x19157
1443A
Kids Seating
constructive algorithms
,
math
800
x16282
1440A
Buy the String
implementation
,
math
800
x19861
1438A
Specific Tastes of Andre
constructive algorithms
,
implementation
800
x19333
1437A
Marketing Scheme
brute force
,
constructive algorithms
,
greedy
,
math
800
x18053
1436A
Reorder
math
800
x22812
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x28762
1433A
Boring Apartments
implementation
,
math
800
x53718
1431A
Selling Hamburgers
*special problem
800
x1922
1430B
Barrels
greedy
,
implementation
,
sortings
800
x19449
1428A
Box is Pull
math
800
x16378
1426A
Floor Number
implementation
,
math
800
x49014
1422A
Fence
geometry
,
math
800
x21064
1421A
XORwice
bitmasks
,
greedy
,
math
800
x29957
1417A
Copy-paste
greedy
,
math
800
x18316
1415A
Prison Break
brute force
,
math
800
x15245
1413A
Finding Sasuke
constructive algorithms
,
math
800
x14857
1411A
In-game Chat
implementation
800
x20736
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x68033
1408A
Circle Coloring
constructive algorithms
800
x12530
1405A
Permutation Forgery
constructive algorithms
800
x21523
1400A
String Similarity
constructive algorithms
,
strings
800
x27150
1399B
Gifts Fixing
greedy
800
x43972
1399A
Remove Smallest
greedy
,
sortings
800
x68262
1398B
Substring Removal Game
games
,
greedy
,
sortings
800
x24783
1398A
Bad Triangle
geometry
,
math
800
x27763
1397A
Juggling Letters
greedy
,
strings
800
x28802
1393A
Rainbow Dash, Fluttershy and Chess Coloring
greedy
,
math
800
x20576
1392B
Omkar and Infinity Clock
implementation
,
math
800
x18545
1392A
Omkar and Password
greedy
,
math
800
x20861
1391B
Fix You
brute force
,
greedy
,
implementation
800
x27654
1391A
Suborrays
constructive algorithms
,
math
800
x24500
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x42380
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x25044
1385B
Restore the Permutation by Merger
greedy
800
x37517
1385A
Three Pairwise Maximums
math
800
x39728
1382A
Common Subsequence
brute force
800
x26630
1374A
Required Remainder
math
800
x54956
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x32104
1371A
Magical Sticks
math
800
x46736
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x53589
1369A
FashionabLee
geometry
,
math
800
x36909
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x40252
1367B
Even Array
greedy
,
math
800
x54847
1367A
Short Substrings
implementation
,
strings
800
x58556
1360B
Honest Coach
greedy
,
sortings
800
x48716
1360A
Minimal Square
greedy
,
math
800
x51687
1358A
Park Lighting
greedy
,
math
800
x39938
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x50706
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x41398
1352A
Sum of Round Numbers
implementation
,
math
800
x82562
1351A
A+B (Trial Problem)
implementation
800
x24402
1348A
Phoenix and Balance
greedy
,
math
800
x39918
1345A
Puzzle Pieces
math
800
x24329
1343B
Balanced Array
constructive algorithms
,
math
800
x57601
1337A
Ichihime and Triangle
constructive algorithms
,
math
800
x38931
1335A
Candies and Two Sisters
math
800
x87301
1328A
Divisibility Problem
math
800
x106461
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x36429
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x40850
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x19924
1316A
Grade Allocation
implementation
800
x18797
1315A
Dead Pixel
implementation
800
x12201
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x26107
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x42663
1307A
Cow and Haybales
greedy
,
implementation
800
x15020
←
1
2
...
4
5
6
7
8
9
10
→
User lists
Name