Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 973 (Div. 2)
13:53:21
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
math
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
76D
Plus and xor
dp
,
greedy
,
math
1700
x2057
76C
Mutation
bitmasks
,
dp
,
math
2700
x310
75D
Big Maximum Sum
data structures
,
dp
,
greedy
,
implementation
,
math
,
trees
2000
x1789
73E
Morrowindows
math
,
number theory
2400
x357
73A
The Elder Trolls IV: Oblivon
greedy
,
math
1600
x1333
72F
Oil
*special problem
,
greedy
,
math
1900
x118
72C
Extraordinarily Nice Numbers
*special problem
,
math
1200
x914
72A
Goshtasp, Vishtasp and Eidi
*special problem
,
greedy
,
math
1800
x185
71C
Round Table Knights
dp
,
math
,
number theory
1600
x6462
71B
Progress Bar
implementation
,
math
1300
x4497
70A
Cookies
math
1300
x3271
69A
Young Physicist
implementation
,
math
1000
x163777
68D
Half-decay tree
data structures
,
divide and conquer
,
dp
,
math
,
probabilities
2500
x463
66D
Petya and His Friends
constructive algorithms
,
math
,
number theory
1700
x3151
65A
Harry Potter and Three Spells
implementation
,
math
1800
x1810
64E
Prime Segment
*special problem
,
brute force
,
math
,
number theory
1800
x240
64C
Table
*special problem
,
greedy
,
implementation
,
math
1600
x337
62A
A Student's Dream
greedy
,
math
1300
x3434
61C
Capture Valerian
math
2000
x708
60E
Mushroom Gnomes
math
,
matrices
2600
x325
60D
Savior
brute force
,
dsu
,
math
2500
x407
57E
Chess
math
,
shortest paths
3000
x259
57D
Journey
dp
,
math
2500
x337
57C
Array
combinatorics
,
math
1900
x2562
55A
Flea travel
implementation
,
math
1200
x3397
54C
First Digit Law
dp
,
math
,
probabilities
2000
x1300
50E
Square Equation Roots
math
2300
x357
50A
Domino piling
greedy
,
math
800
x243079
49C
Disposition
constructive algorithms
,
math
1700
x1683
49B
Sum
math
1500
x2463
48C
The Race
math
1800
x777
47A
Triangular numbers
brute force
,
math
800
x14957
44D
Hyperdrive
math
1800
x707
42D
Strange town
constructive algorithms
,
math
2300
x401
40D
Interesting Sequence
math
2600
x135
40C
Berland Square
implementation
,
math
2300
x247
40B
Repaintings
math
1600
x1159
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3981
39D
Cubical Planet
math
1100
x3933
38B
Chess
brute force
,
implementation
,
math
1200
x3512
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x413
34E
Collisions
brute force
,
implementation
,
math
2000
x584
32C
Flea
math
1700
x2131
30A
Accounting
brute force
,
math
1400
x3442
28E
DravDe saves the world
geometry
,
math
2800
x90
26D
Tickets
combinatorics
,
math
,
probabilities
2400
x777
24D
Broken robot
dp
,
math
,
probabilities
2400
x1919
24C
Sequence of points
geometry
,
implementation
,
math
1800
x1248
23D
Tetragon
geometry
,
math
2600
x336
23B
Party
constructive algorithms
,
graphs
,
math
1600
x3327
21B
Intersection
implementation
,
math
2000
x1340
20B
Equation
math
2000
x3846
18B
Platforms
brute force
,
math
1700
x2123
17A
Noldbach problem
brute force
,
math
,
number theory
1000
x16215
15B
Laser
math
1800
x1456
14C
Four Segments
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3331
13A
Numbers
implementation
,
math
1000
x7742
11B
Jumping Jack
math
1600
x4665
11A
Increasing Sequence
constructive algorithms
,
implementation
,
math
900
x13179
9C
Hexadecimal's Numbers
brute force
,
implementation
,
math
1200
x12892
9A
Die Roll
math
,
probabilities
800
x56040
7C
Line
math
,
number theory
1800
x4589
5D
Follow Traffic Rules
implementation
,
math
2100
x1697
4A
Watermelon
brute force
,
math
800
x515589
2B
The least round way
dp
,
math
2000
x10804
1C
Ancient Berland Circus
geometry
,
math
2100
x5671
1B
Spreadsheet
implementation
,
math
1600
x22518
1A
Theatre Square
math
1000
x258395
←
1
2
...
27
28
29
→
User lists
Name