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CodeCraft-22 and Codeforces Round #795 (Div. 2)
3 days
→ Filter Problems
Difficulty:
—
interactive
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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Problems
#
Name
1673F
Anti-Theft Road Planning
bitmasks
,
constructive algorithms
,
divide and conquer
,
greedy
,
interactive
,
math
2400
x514
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x1588
1666I
Interactive Treasure Hunt
brute force
,
constructive algorithms
,
geometry
,
interactive
,
math
2200
x906
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x2429
1639K
Treasure Hunt
graphs
,
interactive
1639J
Treasure Hunt
graphs
,
interactive
1639I
Treasure Hunt
graphs
,
interactive
1639H
Treasure Hunt
graphs
,
interactive
1639G
Treasure Hunt
graphs
,
interactive
1639F
Treasure Hunt
graphs
,
interactive
1639E
Treasure Hunt
graphs
,
interactive
1639D
Treasure Hunt
graphs
,
interactive
1639C
Treasure Hunt
graphs
,
interactive
1639B
Treasure Hunt
graphs
,
interactive
1639A
Treasure Hunt
graphs
,
interactive
1634D
Finding Zero
constructive algorithms
,
interactive
,
math
2000
x3438
1633F
Perfect Matching
data structures
,
divide and conquer
,
interactive
,
trees
2800
x213
1628C
Grid Xor
constructive algorithms
,
greedy
,
implementation
,
interactive
,
math
2300
x2464
1624F
Interacdive Problem
binary search
,
constructive algorithms
,
interactive
2000
x2408
1621C
Hidden Permutations
dfs and similar
,
interactive
,
math
1700
x5628
1617D2
Too Many Impostors (hard version)
constructive algorithms
,
implementation
,
interactive
,
math
2400
x1309
1617D1
Too Many Impostors (easy version)
constructive algorithms
,
implementation
,
interactive
1800
x3595
1599H
Hidden Fortress
interactive
,
math
2100
x774
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x1773
1584D
Guess the Permutation
binary search
,
combinatorics
,
interactive
,
math
2000
x2859
1583D
Omkar and the Meaning of Life
constructive algorithms
,
greedy
,
interactive
1800
x4336
1578M
The Mind
constructive algorithms
,
interactive
,
probabilities
2700
x362
1578I
Interactive Rays
geometry
,
interactive
3300
x42
1566H
Xor-quiz
constructive algorithms
,
dp
,
interactive
,
math
,
number theory
3200
x67
1562F
Tubular Bells
interactive
,
math
,
number theory
,
probabilities
2900
x232
1557E
Assiut Chess
brute force
,
constructive algorithms
,
interactive
2800
x582
1556D
Take a Guess
bitmasks
,
constructive algorithms
,
interactive
,
math
1800
x4936
1552H
Guess the Perimeter
binary search
,
interactive
,
number theory
3300
x193
1546B
AquaMoon and Stolen String
interactive
,
math
1200
x11147
1545D
AquaMoon and Wrong Coordinate
constructive algorithms
,
interactive
,
math
3000
x297
1543D2
RPD and Rap Sheet (Hard Version)
brute force
,
constructive algorithms
,
interactive
,
math
2200
x1692
1543D1
RPD and Rap Sheet (Easy Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
1700
x6570
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2126
1534H
Lost Nodes
constructive algorithms
,
dp
,
graphs
,
interactive
,
sortings
,
trees
3500
x105
1534E
Lost Array
graphs
,
greedy
,
interactive
,
shortest paths
2300
x1512
1534D
Lost Tree
constructive algorithms
,
interactive
,
trees
1800
x4650
1526F
Median Queries
constructive algorithms
,
interactive
,
probabilities
3000
x151
1521C
Nastia and a Hidden Permutation
constructive algorithms
,
interactive
2000
x3791
1520F2
Guess the K-th Zero (Hard version)
binary search
,
constructive algorithms
,
data structures
,
interactive
2200
x2426
1520F1
Guess the K-th Zero (Easy version)
binary search
,
interactive
1600
x8135
1514E
Baby Ehab's Hyper Apartment
binary search
,
graphs
,
interactive
,
sortings
,
two pointers
2700
x397
1510I
Is It Rated?
greedy
,
interactive
,
math
,
probabilities
2700
x334
1505A
Is it rated - 2
*special problem
,
implementation
,
interactive
900
x11416
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x5959
1499G
Graph Coloring
data structures
,
graphs
,
interactive
3100
x131
1498E
Two Houses
brute force
,
graphs
,
greedy
,
interactive
,
sortings
2200
x1531
1493F
Enchanted Matrix
bitmasks
,
interactive
,
number theory
2600
x295
1491F
Magnets
binary search
,
constructive algorithms
,
interactive
2700
x708
1486C2
Guessing the Greatest (hard version)
binary search
,
interactive
1900
x6412
1486C1
Guessing the Greatest (easy version)
binary search
,
interactive
1600
x9093
1482G
Vabank
binary search
,
interactive
3200
x164
1479A
Searching Local Minimum
binary search
,
interactive
,
ternary search
1700
x9072
1470C
Strange Shuffle
binary search
,
brute force
,
constructive algorithms
,
interactive
2500
x1104
1466I
The Riddle of the Sphinx
binary search
,
data structures
,
data structures
,
interactive
3400
x115
1451E2
Bitwise Queries (Hard Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
2300
x2325
1451E1
Bitwise Queries (Easy Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
2000
x3494
1444E
Finding the Vertex
brute force
,
dfs and similar
,
dp
,
interactive
,
trees
3500
x78
1442F
Differentiating Games
games
,
interactive
3400
x55
1438F
Olha and Igor
interactive
,
probabilities
,
trees
3000
x346
1428H
Rotary Laser Lock
binary search
,
interactive
3500
x61
1425F
Flamingoes of Mystery
interactive
1400
x3675
1423M
Milutin's Plums
interactive
2800
x106
1407C
Chocolate Bunny
constructive algorithms
,
interactive
,
math
,
two pointers
1600
x9608
1406E
Deleting Numbers
interactive
,
math
,
number theory
2600
x1226
1404D
Game of Pairs
constructive algorithms
,
dfs and similar
,
interactive
,
math
,
number theory
2800
x699
1403A
The Potion of Great Power
*special problem
,
2-sat
,
binary search
,
data structures
,
graphs
,
interactive
,
sortings
,
two pointers
2400
x256
1392E
Omkar and Duck
bitmasks
,
constructive algorithms
,
interactive
,
math
2100
x2858
1386A
Colors
*special problem
,
binary search
,
constructive algorithms
,
interactive
2700
x189
1375F
Integer Game
constructive algorithms
,
games
,
interactive
,
math
2600
x1597
1372F
Omkar and Modes
binary search
,
divide and conquer
,
interactive
2700
x315
1370F2
The Hidden Pair (Hard Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2700
x1015
1370F1
The Hidden Pair (Easy Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2400
x1132
1368F
Lamps on a Circle
games
,
implementation
,
interactive
,
math
2600
x728
1365G
Secure Password
bitmasks
,
combinatorics
,
constructive algorithms
,
interactive
,
math
2800
x633
1364E
X-OR
bitmasks
,
constructive algorithms
,
divide and conquer
,
interactive
,
probabilities
2700
x840
1363D
Guess The Maximums
binary search
,
implementation
,
interactive
,
math
2100
x3386
1355F
Guess Divisors Count
constructive algorithms
,
interactive
,
number theory
2600
x612
1354G
Find a Gift
binary search
,
interactive
,
probabilities
2600
x511
1340E
Nastya and Bees
graphs
,
interactive
,
probabilities
3000
x40
1336D
Yui and Mahjong Set
constructive algorithms
,
interactive
3200
x385
1305D
Kuroni and the Celebration
constructive algorithms
,
dfs and similar
,
interactive
,
trees
1900
x4110
1299E
So Mean
interactive
,
math
3400
x98
1292E
Rin and The Unknown Flower
constructive algorithms
,
greedy
,
interactive
,
math
3500
x188
1291F
Coffee Varieties (easy version)
graphs
,
interactive
2800
x280
1290D
Coffee Varieties (hard version)
constructive algorithms
,
graphs
,
interactive
3000
x381
1286C2
Madhouse (Hard version)
brute force
,
constructive algorithms
,
hashing
,
interactive
,
math
2800
x473
1286C1
Madhouse (Easy version)
brute force
,
constructive algorithms
,
interactive
,
math
2400
x1000
1282D
Enchanted Artifact
constructive algorithms
,
interactive
,
strings
2300
x1759
1275F
Шардирование постов
*special problem
,
binary search
,
interactive
x91
1270D
Strange Device
constructive algorithms
,
interactive
,
math
,
sortings
1900
x3902
1267I
Intriguing Selection
brute force
,
constructive algorithms
,
implementation
,
interactive
,
sortings
2600
x552
1254C
Point Ordering
constructive algorithms
,
geometry
,
interactive
,
math
2300
x1064
1207E
XOR Guessing
bitmasks
,
interactive
,
math
1900
x4681
1205C
Palindromic Paths
implementation
,
interactive
2400
x995
1201E2
Knightmare (hard)
graphs
,
interactive
,
shortest paths
3000
x100
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