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Before contest
Codeforces Round #792 (Div. 1)
2 days
Before contest
Codeforces Round #792 (Div. 2)
2 days
→ Filter Problems
Difficulty:
—
graph matchings
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
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Status
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Custom test
Problems
#
Name
1657E
Star MST
combinatorics
,
dp
,
graph matchings
,
math
2200
x1171
1651E
Sum of Matchings
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
graph matchings
,
greedy
,
math
2600
x350
1634E
Fair Share
constructive algorithms
,
data structures
,
dfs and similar
,
graph matchings
,
graphs
2400
x1142
1630F
Making It Bipartite
flows
,
graph matchings
,
graphs
,
number theory
3400
x191
1624C
Division by Two and Permutation
constructive algorithms
,
flows
,
graph matchings
,
greedy
,
math
1100
x18508
1615G
Maximum Adjacent Pairs
constructive algorithms
,
graph matchings
3300
x104
1611G
Robot and Candies
data structures
,
graph matchings
,
greedy
2500
x434
1592F2
Alice and Recoloring 2
constructive algorithms
,
flows
,
graph matchings
,
greedy
2800
x298
1583E
Moment of Bloom
constructive algorithms
,
dfs and similar
,
graph matchings
,
graphs
,
greedy
,
trees
2200
x1778
1572D
Bridge Club
flows
,
graph matchings
,
graphs
,
greedy
2800
x243
1549B
Gregor and the Pawn Game
dfs and similar
,
dp
,
flows
,
graph matchings
,
graphs
,
greedy
,
implementation
800
x19740
1545C
AquaMoon and Permutations
2-sat
,
brute force
,
combinatorics
,
constructive algorithms
,
graph matchings
,
graphs
2800
x449
1533I
Excursions
*special problem
,
constructive algorithms
,
dfs and similar
,
flows
,
graph matchings
,
graphs
x35
1525F
Goblins And Gnomes
brute force
,
dp
,
flows
,
graph matchings
2800
x222
1525D
Armchairs
dp
,
flows
,
graph matchings
,
greedy
1800
x7152
1510C
Cactus Not Enough
dfs and similar
,
graph matchings
,
graphs
2900
x152
1510B
Button Lock
flows
,
graph matchings
,
graphs
2600
x539
1472F
New Year's Puzzle
brute force
,
dp
,
graph matchings
,
greedy
,
sortings
2100
x2488
1470D
Strange Housing
constructive algorithms
,
dfs and similar
,
graph matchings
,
graphs
,
greedy
2200
x2733
1437C
Chef Monocarp
dp
,
flows
,
graph matchings
,
greedy
,
math
,
sortings
1800
x8168
1423B
Valuable Paper
binary search
,
flows
,
graph matchings
,
graphs
1900
x1473
1416F
Showing Off
flows
,
graph matchings
,
greedy
,
implementation
3300
x161
1404E
Bricks
flows
,
graph matchings
,
graphs
2800
x682
1389F
Bicolored Segments
data structures
,
dp
,
graph matchings
,
sortings
2600
x753
1381C
Mastermind
constructive algorithms
,
graph matchings
,
greedy
,
implementation
,
sortings
,
two pointers
2500
x1237
1375G
Tree Modification
brute force
,
constructive algorithms
,
dfs and similar
,
graph matchings
,
graphs
,
trees
2800
x1295
1360C
Similar Pairs
constructive algorithms
,
graph matchings
,
greedy
,
sortings
1100
x25613
1354F
Summoning Minions
constructive algorithms
,
dp
,
flows
,
graph matchings
,
greedy
,
sortings
2500
x823
1284F
New Year and Social Network
data structures
,
graph matchings
,
graphs
,
math
,
trees
3200
x222
1264E
Beautiful League
constructive algorithms
,
flows
,
graph matchings
2700
x400
1239D
Catowice City
2-sat
,
dfs and similar
,
graph matchings
,
graphs
2400
x1353
1198E
Rectangle Painting 2
flows
,
graph matchings
,
graphs
2500
x719
1184B2
The Doctor Meets Vader (Medium)
flows
,
graph matchings
,
graphs
,
shortest paths
,
sortings
2200
x474
1179C
Serge and Dining Room
binary search
,
data structures
,
graph matchings
,
greedy
,
implementation
,
math
,
trees
2200
x1563
1139E
Maximize Mex
flows
,
graph matchings
,
graphs
2400
x1138
1107F
Vasya and Endless Credits
dp
,
flows
,
graph matchings
,
graphs
,
sortings
2600
x567
1070I
Privatization of Roads in Berland
flows
,
graph matchings
,
graphs
2400
x434
1067E
Random Forest Rank
dp
,
graph matchings
,
math
,
trees
2800
x286
1054F
Electric Scheme
flows
,
graph matchings
2700
x264
1045A
Last chance
data structures
,
flows
,
graph matchings
,
graphs
,
trees
2500
x241
1034B
Little C Loves 3 II
brute force
,
constructive algorithms
,
flows
,
graph matchings
2200
x1857
1027F
Session in BSU
binary search
,
dfs and similar
,
dsu
,
graph matchings
,
graphs
2400
x1122
1009G
Allowed Letters
bitmasks
,
flows
,
graph matchings
,
graphs
,
greedy
2400
x576
981F
Round Marriage
binary search
,
graph matchings
,
greedy
2500
x516
891D
Sloth
dfs and similar
,
dp
,
graph matchings
,
trees
3100
x124
852D
Exploration plan
binary search
,
flows
,
graph matchings
,
shortest paths
2100
x713
793G
Oleg and chess
data structures
,
divide and conquer
,
flows
,
graph matchings
3400
x211
739D
Recover a functional graph
graph matchings
3400
x121
737E
Tanya is 5!
graph matchings
,
graphs
,
greedy
,
schedules
3300
x91
618D
Hamiltonian Spanning Tree
dfs and similar
,
dp
,
graph matchings
,
greedy
,
trees
2200
x1533
590E
Birthday
graph matchings
,
strings
3200
x523
575C
Party
bitmasks
,
brute force
,
graph matchings
2700
x174
498C
Array and Operations
flows
,
graph matchings
,
number theory
2100
x2675
491C
Deciphering
flows
,
graph matchings
2300
x310
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x33452
468E
Permanent
dp
,
graph matchings
,
math
,
meet-in-the-middle
3100
x178
468D
Tree
graph matchings
3100
x277
468B
Two Sets
2-sat
,
dfs and similar
,
dsu
,
graph matchings
,
greedy
2000
x3168
387D
George and Interesting Graph
graph matchings
2200
x731
353E
Antichain
dp
,
graph matchings
,
greedy
2200
x504
316C2
Tidying Up
flows
,
graph matchings
2300
x494
290C
WTF?
*special problem
,
graph matchings
,
implementation
,
trees
1700
x1297
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x85520
167D
Wizards and Roads
data structures
,
divide and conquer
,
graph matchings
,
graphs
,
greedy
3000
x161
166D
Shoe Store
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
2500
x307
120H
Brevity is Soul of Wit
graph matchings
1800
x1111
103E
Buying Sets
flows
,
graph matchings
2900
x506
86B
Tetris revisited
constructive algorithms
,
graph matchings
,
greedy
,
math
2200
x359
21D
Traveling Graph
bitmasks
,
graph matchings
,
graphs
2400
x591
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