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Codeforces Round 1007 (Div. 2)
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2025 ICPC Asia Pacific Championship - Online Mirror (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
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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
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Custom test
Problems
#
Name
77A
Heroes
brute force
,
implementation
1400
x1788
76F
Tourist
binary search
,
data structures
,
dp
2300
x668
76E
Points
implementation
,
math
1700
x1744
76D
Plus and xor
dp
,
greedy
,
math
1700
x2121
76C
Mutation
bitmasks
,
dp
,
math
2700
x337
76B
Mice
greedy
,
two pointers
2100
x764
76A
Gift
dsu
,
graphs
,
sortings
,
trees
2200
x1763
75E
Ship's Shortest Path
geometry
,
shortest paths
2400
x282
75D
Big Maximum Sum
data structures
,
dp
,
greedy
,
implementation
,
math
,
trees
2000
x1864
75C
Modified GCD
binary search
,
number theory
1600
x13299
75B
Facetook Priority Wall
expression parsing
,
implementation
,
strings
1500
x3357
75A
Life Without Zeros
implementation
1000
x27039
74E
Shift It!
constructive algorithms
2800
x170
74D
Hanger
data structures
2400
x374
74C
Chessboard Billiard
dfs and similar
,
dsu
,
graphs
,
number theory
2100
x1309
74B
Train
dp
,
games
,
greedy
1500
x1569
74A
Room Leader
implementation
1000
x5295
73F
Plane of Tanks
brute force
,
geometry
2900
x82
73E
Morrowindows
math
,
number theory
2400
x369
73D
FreeDiv
dfs and similar
,
graphs
,
greedy
2200
x650
73C
LionAge II
dp
1800
x2163
73B
Need For Brake
binary search
,
greedy
,
sortings
2000
x511
73A
The Elder Trolls IV: Oblivon
greedy
,
math
1600
x1396
72I
Goofy Numbers
*special problem
,
implementation
1500
x469
72H
Reverse It!
*special problem
,
implementation
1600
x270
72G
Fibonacci army
*special problem
,
dp
1000
x2398
72F
Oil
*special problem
,
greedy
,
math
1900
x121
72E
Ali goes shopping
*special problem
,
brute force
,
strings
1800
x175
72D
Perse-script
*special problem
,
expression parsing
2300
x78
72C
Extraordinarily Nice Numbers
*special problem
,
math
1200
x955
72B
INI-file
*special problem
,
implementation
2200
x110
72A
Goshtasp, Vishtasp and Eidi
*special problem
,
greedy
,
math
1800
x188
71E
Nuclear Fusion
bitmasks
,
dp
2200
x767
71D
Solitaire
brute force
,
implementation
2200
x664
71C
Round Table Knights
dp
,
math
,
number theory
1600
x6770
71B
Progress Bar
implementation
,
math
1300
x4672
71A
Way Too Long Words
strings
800
x413359
70E
Information Reform
dp
,
implementation
,
trees
2700
x534
70D
Professor's task
data structures
,
geometry
2700
x1013
70C
Lucky Tickets
binary search
,
data structures
,
sortings
,
two pointers
2200
x587
70B
Text Messaging
expression parsing
,
greedy
,
strings
1600
x1798
70A
Cookies
math
1300
x3334
69E
Subsegments
data structures
,
implementation
1800
x4506
69D
Dot
dp
,
games
1900
x1021
69C
Game
implementation
2000
x602
69B
Bets
greedy
,
implementation
1200
x3318
69A
Young Physicist
implementation
,
math
1000
x175467
68E
Contact
geometry
2900
x73
68D
Half-decay tree
data structures
,
divide and conquer
,
dp
,
math
,
probabilities
2500
x484
68C
Synchrophasotron
brute force
2200
x313
68B
Energy exchange
binary search
1600
x4843
68A
Irrational problem
implementation
,
number theory
1100
x5025
67E
Save the City!
geometry
2500
x319
67D
Optical Experiment
binary search
,
data structures
,
dp
1900
x1535
67C
Sequence of Balls
dp
2600
x693
67B
Restoration of the Permutation
greedy
1800
x787
67A
Partial Teacher
dp
,
graphs
,
greedy
,
implementation
1800
x2153
66E
Petya and Post
data structures
,
dp
2000
x777
66D
Petya and His Friends
constructive algorithms
,
math
,
number theory
1700
x3233
66C
Petya and File System
data structures
,
implementation
1800
x1088
66B
Petya and Countryside
brute force
,
implementation
1100
x21123
66A
Petya and Java
implementation
,
strings
1300
x6555
65E
Harry Potter and Moving Staircases
dfs and similar
,
implementation
2900
x94
65D
Harry Potter and the Sorting Hat
brute force
,
dfs and similar
,
hashing
2200
x440
65C
Harry Potter and the Golden Snitch
binary search
,
geometry
2100
x813
65B
Harry Potter and the History of Magic
brute force
,
greedy
,
implementation
1700
x1398
65A
Harry Potter and Three Spells
implementation
,
math
1800
x1836
64I
Sort the Table
*special problem
,
sortings
2400
x91
64H
Table Bowling
*special problem
,
sortings
2300
x117
64G
Path Canonization
*special problem
2200
x123
64F
Domain
*special problem
,
expression parsing
2000
x185
64E
Prime Segment
*special problem
,
brute force
,
math
,
number theory
1800
x252
64D
Presents
*special problem
,
greedy
1800
x293
64C
Table
*special problem
,
greedy
,
implementation
,
math
1600
x343
64B
Expression
*special problem
,
expression parsing
1500
x1031
64A
Factorial
*special problem
,
implementation
1300
x3368
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2000
x777
63D
Dividing Island
constructive algorithms
1900
x1278
63C
Bulls and Cows
brute force
,
implementation
1700
x1759
63B
Settlers' Training
implementation
1200
x4915
63A
Sinking Ship
implementation
,
sortings
,
strings
900
x11991
62E
World Evil
dp
,
flows
2700
x238
62D
Wormhouse
dfs and similar
,
graphs
2300
x376
62C
Inquisition
geometry
,
implementation
,
sortings
2300
x254
62B
Tyndex.Brome
binary search
,
implementation
1800
x1301
62A
A Student's Dream
greedy
,
math
1300
x3491
61E
Enemy is weak
data structures
,
trees
1900
x11935
61D
Eternal Victory
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
1800
x6752
61C
Capture Valerian
math
2000
x728
61B
Hard Work
strings
1300
x3921
61A
Ultra-Fast Mathematician
implementation
800
x117625
60E
Mushroom Gnomes
math
,
matrices
2600
x329
60D
Savior
brute force
,
dsu
,
math
2500
x485
60C
Mushroom Strife
brute force
,
dfs and similar
2100
x586
60B
Serial Time!
dfs and similar
,
dsu
1400
x4829
60A
Where Are My Flakes?
implementation
,
two pointers
1300
x3709
59E
Shortest Path
graphs
,
shortest paths
2000
x3734
59D
Team Arrangement
constructive algorithms
,
greedy
,
implementation
2000
x650
59C
Title
expression parsing
1600
x2148
59B
Fortune Telling
implementation
,
number theory
1200
x7181
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