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EXTRA EX-10

2100 ≤ Rating ≤ 2199 (Extra)

Extra problems for users satisfying this condition: 2100 <= Codeforces Rating <= 2199 (Extra).

LEVEL Master
PROBLEMS 200
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# PROBLEM RATING DIFFICULTY TAGS STATUS
01 Toy Army
CF-84/A
900
LVL 1
mathnumber theory
02 Spit Problem
CF-29/A
1000
LVL 1
brute force
03 Reconnaissance
CF-32/A
800
LVL 1
brute force
04 Circle Line
CF-278/A
800
LVL 1
implementation
05 George and Accommodation
CF-467/A
800
LVL 1
implementation
06 Memory and Crow
CF-712/A
800
LVL 1
implementationmath
07 Wizards' Duel
CF-591/A
900
LVL 1
implementationmath
08 Rewards
CF-448/A
800
LVL 1
implementation
09 Crazy Computer
CF-716/A
800
LVL 1
implementation
10 Multiplication Table
CF-577/A
1000
LVL 2
implementationnumber theory
11 Beru-taxi
CF-706/A
900
LVL 2
brute forcegeometryimplementation
12 Joysticks
CF-651/A
1100
LVL 2
dpgreedyimplementation +1
13 Case of the Zeros and Ones
CF-556/A
900
LVL 2
greedy
14 Lovely Palindromes
CF-688/B
1000
LVL 2
constructive algorithmsmath
15 A and B and Chess
CF-519/A
900
LVL 2
implementation
16 Tavas and Nafas
CF-535/A
1000
LVL 2
brute forceimplementation
17 Drazil and Date
CF-515/A
1000
LVL 2
math
18 Lecture
CF-499/B
1000
LVL 2
implementationstrings
19 Digital Counter
CF-495/A
1100
LVL 3
implementation
20 Random Teams
CF-478/B
1300
LVL 3
combinatoricsconstructive algorithmsgreedy +1
21 Memory and Trident
CF-712/B
1100
LVL 3
implementationstrings
22 Magic Spheres
CF-606/A
1200
LVL 3
implementation
23 Case of Fake Numbers
CF-556/B
1100
LVL 3
brute forceimplementation
24 Fedor and New Game
CF-467/B
1100
LVL 3
bitmasksbrute forceconstructive algorithms +1
25 Filya and Homework
CF-714/B
1200
LVL 3
implementationsortings
26 Xor-tree
CF-429/A
1300
LVL 3
dfs and similartrees
27 NP-Hard Problem
CF-687/A
1500
LVL 3
dfs and similargraphs
28 A and B and Compilation Errors
CF-519/B
1100
LVL 3
data structuresimplementationsortings
29 Tavas and SaDDas
CF-535/B
1100
LVL 3
bitmasksbrute forcecombinatorics +1
30 Two Bases
CF-602/A
1100
LVL 3
brute forceimplementation
31 Rebranding
CF-591/B
1200
LVL 3
implementationstrings
32 Lucky Permutation Triple
CF-303/A
1300
LVL 3
constructive algorithmsimplementationmath
33 Meeting of Old Friends
CF-714/A
1100
LVL 3
implementationmath
34 A and B and Team Training
CF-519/C
1300
LVL 3
greedyimplementationmath +1
35 Square
CF-194/B
1200
LVL 3
math
36 Sorting Railway Cars
CF-605/A
1600
LVL 3
constructive algorithmsgreedy
37 Chat Online
CF-469/B
1300
LVL 3
implementation
38 Diverse Permutation
CF-482/A
1200
LVL 3
constructive algorithmsgreedy
39 Alice and Bob
CF-346/A
1600
LVL 4
gamesmathnumber theory
40 Vasya and the Bus
CF-190/A
1100
LVL 4
greedymath
41 Sereja and Prefixes
CF-380/A
1600
LVL 4
binary searchbrute force
42 Divisible by Seven
CF-375/A
1600
LVL 4
mathnumber theory
43 Connecting Universities
CF-700/B
1800
LVL 4
dfs and similardpgraphs +1
44 Zero-One
CF-135/C
1900
LVL 4
constructive algorithmsgamesgreedy
45 Ant on the Tree
CF-29/D
2000
LVL 4
constructive algorithmsdfs and similartrees
46 Kay and Snowflake
CF-685/B
1900
LVL 4
data structuresdfs and similardp +1
47 DNA Alignment
CF-520/C
1500
LVL 4
mathstrings
48 Coloring Trees
CF-711/C
1700
LVL 4
dp
49 More Cowbell
CF-604/B
1400
LVL 4
binary searchgreedy
50 Malek Dance Club
CF-319/A
1600
LVL 4
combinatoricsmath
51 Berzerk
CF-786/A
2000
LVL 4
dfs and similardpgames
52 Recycling Bottles
CF-671/A
1800
LVL 4
dpgeometrygreedy +1
53 Moodular Arithmetic
CF-603/B
1800
LVL 4
combinatoricsdfs and similardsu +2
54 Keyboard
CF-88/B
1500
LVL 4
implementation
55 Sysadmin Bob
CF-31/B
1500
LVL 4
greedyimplementationstrings
56 The Child and Set
CF-437/B
1500
LVL 4
bitmasksgreedyimplementation +1
57 Borya and Hanabi
CF-442/A
1700
LVL 4
bitmasksbrute forceimplementation
58 Ilya and Sticks
CF-525/C
1600
LVL 4
greedymathsortings
59 Peter and Snow Blower
CF-613/A
1900
LVL 4
binary searchgeometryternary search
60 Amr and Pins
CF-507/B
1400
LVL 4
geometrymath
61 Modular Equations
CF-495/B
1600
LVL 4
mathnumber theory
62 Timofey and rectangles
CF-763/B
2100
LVL 4
constructive algorithmsgeometry
63 Replacement
CF-570/C
1600
LVL 4
constructive algorithmsdata structuresimplementation
64 Dreamoon and Sets
CF-476/D
1900
LVL 4
constructive algorithmsgreedymath
65 Polyline
CF-617/D
1700
LVL 4
constructive algorithmsimplementation
66 Music
CF-569/A
1500
LVL 4
implementationmath
67 Chips
CF-333/B
1800
LVL 4
greedy
68 The Values You Can Make
CF-687/C
1900
LVL 4
dp
69 Inna and Sequence
CF-374/D
2000
LVL 4
binary searchdata structuresdp +1
70 School Marks
CF-540/B
1700
LVL 4
greedyimplementation
71 Alternating Current
CF-343/B
1600
LVL 4
data structuresgreedyimplementation
72 Unordered Subsequence
CF-27/C
1900
LVL 4
constructive algorithmsgreedy
73 Hard problem
CF-706/C
1600
LVL 4
dpstrings
74 Subsegments
CF-69/E
1800
LVL 4
data structuresimplementation
75 Mike and Fun
CF-548/B
1400
LVL 4
brute forcedpgreedy +1
76 DZY Loves Chemistry
CF-445/B
1400
LVL 4
dfs and similardsugreedy
77 Lazy Student
CF-605/B
1700
LVL 4
constructive algorithmsdata structuresgraphs
78 Approximating a Constant Range
CF-602/B
1400
LVL 4
dpimplementationtwo pointers
79 24 Game
CF-468/A
1500
LVL 4
constructive algorithmsgreedymath
80 Gena's Code
CF-614/B
1400
LVL 4
implementationmath
81 Complete the Word
CF-716/B
1300
LVL 4
greedytwo pointers
82 Memory and De-Evolution
CF-712/C
1600
LVL 4
greedymath
83 Sereja and Swaps
CF-425/A
1500
LVL 4
brute forcesortings
84 Remainders Game
CF-687/B
1800
LVL 4
chinese remainder theoremmathnumber theory
85 The table
CF-226/D
2100
LVL 5
constructive algorithmsgreedy
86 Let's Play Osu!
CF-235/B
2000
LVL 5
dpmathprobabilities
87 Legacy
CF-786/B
2300
LVL 5
data structuresgraphsshortest paths
88 Games with Rectangle
CF-128/C
2000
LVL 5
combinatoricsdp
89 Lieges of Legendre
CF-603/C
2200
LVL 5
gamesmath
90 Ring Road 2
CF-27/D
2200
LVL 5
2-satdfs and similardsu +1
91 Number With The Given Amount Of Divisors
CF-27/E
2000
LVL 5
brute forcedpnumber theory
92 Anton and Permutation
CF-785/E
2200
LVL 5
brute forcedata structures
93 Anton and School - 2
CF-785/D
2300
LVL 5
combinatoricsdpmath +1
94 Ants
CF-317/B
2000
LVL 5
brute forceimplementation
95 Maxim and Restaurant
CF-261/B
1900
LVL 5
dpmathprobabilities
96 3-cycles
CF-41/E
1900
LVL 5
constructive algorithmsgraphsgreedy
97 Surrounded
CF-190/B
1800
LVL 5
geometry
98 Dispute
CF-242/D
2100
LVL 5
dfs and similargraphsgreedy
99 Nanami's Digital Board
CF-433/D
2000
LVL 5
dsuimplementation
100 Searching Rectangles
CF-713/B
2200
LVL 5
binary searchconstructive algorithmsinteractive
101 Compatible Numbers
CF-165/E
2200
LVL 5
bitmasksbrute forcedfs and similar +1
102 Anton and Ira
CF-584/E
2300
LVL 5
constructive algorithmsgreedymath
103 Pluses everywhere
CF-520/E
2200
LVL 5
combinatoricsdpmath +1
104 Directed Roads
CF-711/D
1900
LVL 5
combinatoricsdfs and similargraphs +1
105 Random Task
CF-431/D
2100
LVL 5
binary searchbitmaskscombinatorics +2
106 Interesting Game
CF-87/C
2000
LVL 5
dpgamesmath
107 Apple Tree
CF-348/B
2100
LVL 5
dfs and similarnumber theorytrees
108 Mike and Geometry Problem
CF-689/E
2000
LVL 5
combinatoricsdata structuresdp +2
109 Maxim and Array
CF-721/D
2000
LVL 5
constructive algorithmsdata structuresgreedy +1
110 Minimization
CF-571/B
2000
LVL 5
dpgreedysortings
111 World Eater Brothers
CF-238/C
2100
LVL 5
dfs and similardpgreedy +1
112 Memory and Scores
CF-712/D
2200
LVL 5
combinatoricsdpmath
113 Vanya and Triangles
CF-552/D
1900
LVL 5
brute forcecombinatoricsdata structures +3
114 Persistent Bookcase
CF-707/D
2200
LVL 5
bitmasksdata structuresdfs and similar +1
115 Bamboo Partition
CF-830/C
2300
LVL 5
brute forcedata structuresimplementation +4
116 Lucky Number Representation
CF-354/E
2200
LVL 5
constructive algorithmsdfs and similardp
117 Dima and Magic Guitar
CF-366/E
2200
LVL 5
brute forceimplementationmath
118 Friends and Subsequences
CF-689/D
2100
LVL 5
binary searchdata structures
119 Journey
CF-721/C
1800
LVL 5
dpgraphs
120 Messenger
CF-631/D
2100
LVL 5
data structureshashingimplementation +2
121 Build String
CF-237/E
2000
LVL 5
flowsgraphs
122 Complete The Graph
CF-715/B
2300
LVL 5
binary searchconstructive algorithmsgraphs +1
123 Bear and Square Grid
CF-679/C
2400
LVL 5
dfs and similardsuimplementation
124 Weak Memory
CF-187/C
2000
LVL 5
dfs and similardsu
125 Sonya and Problem Wihtout a Legend
CF-713/C
2300
LVL 5
dpsortings
126 Bear and Tower of Cubes
CF-679/B
2200
LVL 5
binary searchdpgreedy
127 Table Compression
CF-650/C
2200
LVL 5
dfs and similardpdsu +2
128 Mishka and Interesting sum
CF-703/D
2100
LVL 5
data structures
129 Marbles
CF-607/C
2500
LVL 6
hashingstrings
130 Divisor Tree
CF-337/E
2200
LVL 6
brute forcenumber theorytrees
131 Quarrel
CF-29/E
2400
LVL 6
graphsshortest paths
132 Bear in the Field
CF-385/E
2300
LVL 6
mathmatrices
133 Edges in MST
CF-160/D
2300
LVL 6
dfs and similardsugraphs +1
134 Anya and Cubes
CF-525/E
2100
LVL 6
binary searchbitmasksbrute force +3
135 Trains and Statistic
CF-675/E
2300
LVL 6
data structuresdpgreedy
136 Bear and Drawing
CF-573/C
2300
LVL 6
constructive algorithmsdfs and similartrees
137 Binary Tree on Plane
CF-277/E
2400
LVL 6
flowstrees
138 Change-free
CF-767/E
2400
LVL 6
greedy
139 Game with Powers
CF-317/D
2300
LVL 6
dpgames
140 Sereja and Tree
CF-380/B
2400
LVL 6
graphsimplementation
141 Break Up
CF-700/C
2600
LVL 6
dfs and similargraphs
142 George and Cards
CF-387/E
2200
LVL 6
binary searchdata structures
143 Codeword
CF-666/C
2500
LVL 6
combinatoricsstrings
144 Bear and Floodlight
CF-385/D
2200
LVL 6
bitmasksdpgeometry
145 The Last Fight Between Human and AI
CF-676/E
2400
LVL 6
math
146 Lovely Matrix
CF-274/D
2200
LVL 6
dfs and similargraphsgreedy +1
147 Infinite Inversions
CF-540/E
2100
LVL 6
binary searchdata structuresimplementation +2
148 Beautiful Road
CF-87/D
2300
LVL 6
dfs and similardpdsu +4
149 Acyclic Organic Compounds
CF-601/D
2400
LVL 6
data structuresdfs and similardsu +3
150 Thwarting Demonstrations
CF-191/E
2200
LVL 6
binary searchdata structurestrees
151 Arthur and Brackets
CF-508/E
2200
LVL 6
dpgreedy
152 Coin Troubles
CF-283/C
2100
LVL 6
dp
153 Garlands
CF-707/E
2400
LVL 6
data structures
154 Ant Man
CF-704/B
2500
LVL 6
dpgraphsgreedy
155 ZS and The Birthday Paradox
CF-711/E
2300
LVL 6
mathnumber theoryprobabilities
156 Game on Tree
CF-280/C
2200
LVL 6
implementationmathprobabilities +1
157 Axis Walking
CF-327/E
2300
LVL 7
bitmaskscombinatoricsconstructive algorithms +2
158 Sereja and Cinema
CF-380/D
2500
LVL 7
combinatoricsmath
159 Numbers
CF-83/D
2400
LVL 7
dpmathnumber theory
160 Memory and Casinos
CF-712/E
2500
LVL 7
data structuresmathprobabilities
161 Color the Carpet
CF-297/D
2500
LVL 7
constructive algorithms
162 Travelling Through the Snow Queen's Kingdom
CF-685/E
2800
LVL 7
bitmasksbrute forcedivide and conquer +1
163 Ultimate Weirdness of an Array
CF-671/C
2800
LVL 7
data structuresnumber theory
164 The Child and Polygon
CF-437/E
2500
LVL 7
dpgeometry
165 Iahub and Xors
CF-341/D
2500
LVL 7
data structures
166 Petya and Pipes
CF-362/E
2300
LVL 7
flowsgraphsshortest paths
167 Dividing Kingdom II
CF-687/D
2500
LVL 7
brute forcedata structuresdsu +2
168 Animals and Puzzle
CF-713/D
2700
LVL 7
binary searchdata structures
169 Alphabet Permutations
CF-610/E
2500
LVL 7
data structuresstrings
170 Levko and Strings
CF-360/C
2500
LVL 7
combinatoricsdp
171 Linear Kingdom Races
CF-115/E
2400
LVL 7
data structuresdp
172 Little Victor and Set
CF-460/D
2300
LVL 7
brute forceconstructive algorithmsmath
173 Minimum Modular
CF-303/C
2400
LVL 7
brute forcegraphsmath +1
174 Summer Earnings
CF-333/E
2500
LVL 7
binary searchbitmasksbrute force +2
175 Counter Attack
CF-190/E
2100
LVL 7
data structuresdsugraphs +2
176 Digit Tree
CF-715/C
2700
LVL 7
dfs and similardivide and conquerdsu +1
177 Kay and Eternity
CF-685/D
2600
LVL 7
brute forceimplementationsortings
178 President's Path
CF-416/E
2500
LVL 7
dpgraphsshortest paths
179 String
CF-123/D
2300
LVL 7
string suffix structures
180 Arpa’s overnight party and Mehrdad’s silent entering
CF-741/C
2600
LVL 7
constructive algorithmsdfs and similargraphs
181 Sereja and Sets
CF-367/D
2400
LVL 7
bitmasksdfs and similar
182 Working routine
CF-706/E
2500
LVL 7
data structuresimplementation
183 Opening Portals
CF-196/E
2600
LVL 7
dsugraphsshortest paths
184 Lucky Array
CF-121/E
2400
LVL 7
data structures
185 Sereja and Sets
CF-425/E
2500
LVL 7
dp
186 Drazil and Morning Exercise
CF-516/D
2800
LVL 8
dfs and similardpdsu +2
187 Optimal Point
CF-685/C
2900
LVL 8
binary searchmath
188 Roads in Yusland
CF-671/D
2900
LVL 8
data structuresdpgreedy
189 Jeff and Removing Periods
CF-351/D
2700
LVL 8
data structures
190 Parcels
CF-480/D
2600
LVL 8
dpgraphs
191 Mission Impassable
CF-150/D
2600
LVL 8
dpstrings
192 Mishka and Divisors
CF-703/E
2600
LVL 8
dpnumber theory
193 Random Function and Tree
CF-482/D
2700
LVL 8
combinatoricsdptrees
194 Choosing Subtree is Fun
CF-372/D
2600
LVL 8
binary searchdata structuresdfs and similar +2
195 World of Darkraft - 2
CF-464/D
2700
LVL 8
dpprobabilities
196 DZY Loves Games
CF-446/D
2800
LVL 9
mathmatricesprobabilities
197 GCD Table
CF-338/D
2900
LVL 9
chinese remainder theoremmathnumber theory
198 Parking Lot
CF-480/E
2800
LVL 9
data structuresdivide and conquer
199 Cookie Clicker
CF-377/E
2800
LVL 9
dpgeometry
200 Ladies' Shop
CF-286/E
2800
LVL 9
constructive algorithmsfftmath
ANALYTICS

Quick Stats

≤ CANDIDATE MASTER
100
PROBLEMS
MASTER
32
PROBLEMS
INTERNATIONAL MASTER
17
PROBLEMS
≥ GRANDMASTER
51
PROBLEMS