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Codeforces Round 973 (Div. 2)
10:40:52
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binary search
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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Custom test
Problems
#
Name
1498B
Box Fitting
binary search
,
bitmasks
,
data structures
,
greedy
1300
x17016
1494C
1D Sokoban
binary search
,
dp
,
greedy
,
implementation
,
two pointers
1900
x5397
1493C
K-beautiful Strings
binary search
,
brute force
,
constructive algorithms
,
greedy
,
strings
2000
x4588
1492C
Maximum width
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1500
x16048
1491F
Magnets
binary search
,
constructive algorithms
,
interactive
2700
x993
1490G
Old Floppy Drive
binary search
,
data structures
,
math
1900
x5633
1490F
Equalize the Array
binary search
,
data structures
,
greedy
,
math
,
sortings
1500
x16068
1490E
Accidental Victory
binary search
,
data structures
,
greedy
1400
x19010
1490C
Sum of Cubes
binary search
,
brute force
,
brute force
,
math
1100
x32928
1488F
Dogecoin
*special problem
,
*special problem
,
binary search
,
data structures
2300
x176
1488D
Problemsolving Marathon
*special problem
,
binary search
,
greedy
1900
x337
1488C
Two Policemen
*special problem
,
binary search
,
brute force
,
math
1900
x405
1487D
Pythagorean Triples
binary search
,
brute force
,
math
,
number theory
1500
x17811
1486E
Paired Payment
binary search
,
brute force
,
constructive algorithms
,
dp
,
flows
,
graphs
,
shortest paths
2200
x2892
1486D
Max Median
binary search
,
data structures
,
dp
2100
x7189
1486C2
Guessing the Greatest (hard version)
binary search
,
interactive
1900
x8425
1486C1
Guessing the Greatest (easy version)
binary search
,
interactive
1600
x12120
1486B
Eastern Exhibition
binary search
,
geometry
,
shortest paths
,
sortings
1500
x15897
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9905
1482G
Vabank
binary search
,
interactive
3200
x280
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x1013
1479A
Searching Local Minimum
binary search
,
interactive
,
ternary search
1700
x11593
1476F
Lanterns
binary search
,
data structures
,
dp
3000
x726
1476B
Inflation
binary search
,
brute force
,
greedy
,
math
1300
x19967
1476A
K-divisible Sum
binary search
,
constructive algorithms
,
greedy
,
math
1000
x37146
1475D
Cleaning the Phone
binary search
,
dp
,
sortings
,
two pointers
1800
x10108
1474B
Different Divisors
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1000
x28423
1472E
Correct Placement
binary search
,
data structures
,
dp
,
sortings
,
two pointers
1700
x7998
1470E
Strange Permutation
binary search
,
combinatorics
,
data structures
,
dp
,
graphs
,
implementation
,
two pointers
3200
x298
1470C
Strange Shuffle
binary search
,
brute force
,
constructive algorithms
,
interactive
2500
x1327
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x22346
1469F
Power Sockets
binary search
,
data structures
,
greedy
2600
x897
1468L
Prime Divisors Selection
binary search
,
greedy
,
math
,
number theory
2700
x319
1468G
Hobbits
binary search
,
geometry
2500
x815
1468D
Firecrackers
binary search
,
sortings
1700
x4640
1466I
The Riddle of the Sphinx
binary search
,
data structures
,
data structures
,
interactive
3400
x190
1463D
Pairs
binary search
,
constructive algorithms
,
greedy
,
two pointers
1900
x4411
1463A
Dungeon
binary search
,
math
1100
x25480
1462F
The Treasure of The Segments
binary search
,
data structures
,
greedy
1800
x6945
1462E2
Close Tuples (hard version)
binary search
,
combinatorics
,
implementation
,
math
,
sortings
,
two pointers
1700
x9659
1462E1
Close Tuples (easy version)
binary search
,
combinatorics
,
math
,
sortings
,
two pointers
1500
x13700
1461D
Divide and Summarize
binary search
,
brute force
,
data structures
,
divide and conquer
,
implementation
,
sortings
1600
x9210
1454F
Array Partition
binary search
,
data structures
,
greedy
,
two pointers
2100
x4020
1453E
Dog Snacks
binary search
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x2031
1452B
Toy Blocks
binary search
,
greedy
,
math
,
sortings
1400
x14677
1450D
Rating Compression
binary search
,
data structures
,
greedy
,
implementation
,
two pointers
1800
x5467
1446F
Line Distance
binary search
,
data structures
,
geometry
3200
x331
1446C
Xor Tree
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
dp
,
trees
2100
x3612
1443C
The Delivery Dilemma
binary search
,
greedy
,
sortings
1400
x15230
1442E
Black, White and Grey Tree
binary search
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
3000
x591
1439C
Greedy Shopping
binary search
,
data structures
,
divide and conquer
,
greedy
,
implementation
2600
x1789
1438E
Yurii Can Do Everything
binary search
,
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
two pointers
2500
x1339
1437E
Make It Increasing
binary search
,
constructive algorithms
,
data structures
,
dp
,
implementation
2200
x3426
1436E
Complicated Computations
binary search
,
data structures
,
two pointers
2400
x2257
1436D
Bandit in a City
binary search
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x6033
1436C
Binary Search
binary search
,
combinatorics
1500
x10786
1431F
Neural Network Problem
*special problem
,
binary search
,
greedy
2100
x156
1430D
String Deletion
binary search
,
data structures
,
greedy
,
two pointers
1700
x8781
1428H
Rotary Laser Lock
binary search
,
interactive
3500
x108
1428F
Fruit Sequences
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2400
x2293
1428E
Carrots for Rabbits
binary search
,
data structures
,
greedy
,
math
,
sortings
2200
x3636
1427H
Prison Break
binary search
,
games
,
geometry
,
ternary search
3500
x77
1426C
Increase and Copy
binary search
,
constructive algorithms
,
math
1100
x19339
1423K
Lonely Numbers
binary search
,
math
,
number theory
,
two pointers
1600
x4833
1423B
Valuable Paper
binary search
,
flows
,
graph matchings
,
graphs
1900
x1806
1419F
Rain of Fire
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
2800
x491
1419D2
Sage's Birthday (hard version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x15515
1419D1
Sage's Birthday (easy version)
binary search
,
constructive algorithms
,
greedy
,
sortings
1000
x24297
1418E
Expected Damage
binary search
,
combinatorics
,
probabilities
2400
x1847
1416E
Split
binary search
,
data structures
,
dp
,
greedy
3200
x289
1416A
k-Amazing Numbers
binary search
,
data structures
,
implementation
,
two pointers
1500
x12468
1413C
Perform Easily
binary search
,
brute force
,
dp
,
implementation
,
sortings
,
two pointers
1900
x5706
1409E
Two Platforms
binary search
,
dp
,
sortings
,
two pointers
1800
x7809
1408H
Rainbow Triples
binary search
,
data structures
,
flows
,
greedy
3300
x399
1408D
Searchlights
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
sortings
,
two pointers
2000
x4304
1408C
Discrete Acceleration
binary search
,
dp
,
implementation
,
math
,
two pointers
1500
x8832
1404C
Fixed Point Removal
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2300
x2656
1403A
The Potion of Great Power
*special problem
,
2-sat
,
binary search
,
data structures
,
graphs
,
interactive
,
sortings
,
two pointers
2400
x290
1401F
Reverse and Swap
binary search
,
bitmasks
,
data structures
2400
x1738
1399E2
Weights Division (hard version)
binary search
,
dfs and similar
,
greedy
,
sortings
,
trees
,
two pointers
2200
x2270
1398F
Controversial Rounds
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2500
x1276
1398E
Two Types of Spells
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
2200
x2416
1394C
Boboniu and String
binary search
,
geometry
,
ternary search
2600
x1088
1392F
Omkar and Landslide
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
2400
x2142
1387A
Graph
*special problem
,
binary search
,
dfs and similar
,
dp
,
math
,
ternary search
2100
x711
1386A
Colors
*special problem
,
binary search
,
constructive algorithms
,
interactive
2700
x263
1379F1
Chess Strikes Back (easy version)
binary search
,
data structures
2700
x598
1379D
New Passenger Trams
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
2300
x1075
1379C
Choosing flowers
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
two pointers
2000
x5541
1379B
Dubious Cyrpto
binary search
,
brute force
,
math
,
number theory
1500
x12638
1373F
Network Coverage
binary search
,
constructive algorithms
,
data structures
,
greedy
2400
x1661
1372F
Omkar and Modes
binary search
,
divide and conquer
,
interactive
2700
x442
1371E2
Asterism (Hard Version)
binary search
,
combinatorics
,
dp
,
math
,
number theory
,
sortings
2300
x2339
1371E1
Asterism (Easy Version)
binary search
,
brute force
,
combinatorics
,
math
,
number theory
,
sortings
1900
x5224
1370F2
The Hidden Pair (Hard Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2700
x1470
1370F1
The Hidden Pair (Easy Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2400
x1589
1370E
Binary Subsequence Rotation
binary search
,
constructive algorithms
,
data structures
,
greedy
2100
x4872
1370D
Odd-Even Subsequence
binary search
,
dp
,
dsu
,
greedy
,
implementation
2000
x9607
1367F2
Flying Sort (Hard Version)
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2400
x1656
1366F
Jog Around The Graph
binary search
,
dp
,
geometry
,
graphs
2700
x802
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