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EXTRA EX-04

1500 ≤ Rating ≤ 1599 (Extra)

Extra problems for users satisfying this condition: 1500 <= Codeforces Rating <= 1599 (Extra).

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PROBLEMS 200
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# PROBLEM RATING DIFFICULTY TAGS STATUS
01 Rewards
CF-448/A
800
LVL 1
implementation
02 Games
CF-268/A
800
LVL 1
brute force
03 Police Recruits
CF-427/A
800
LVL 1
implementation
04 Squats
CF-424/A
900
LVL 1
implementation
05 Soroban
CF-363/A
800
LVL 1
implementation
06 Buggy Sorting
CF-246/A
900
LVL 1
constructive algorithmsgreedysortings
07 Mashmokh and Lights
CF-415/A
900
LVL 1
implementation
08 Colorful Stones (Simplified Edition)
CF-265/A
800
LVL 1
implementation
09 Kyoya and Photobooks
CF-554/A
900
LVL 1
brute forcemathstrings
10 Greg's Workout
CF-255/A
800
LVL 1
implementation
11 Roma and Lucky Numbers
CF-262/A
800
LVL 1
implementation
12 Shaass and Oskols
CF-294/A
800
LVL 1
implementationmath
13 Circle Line
CF-278/A
800
LVL 1
implementation
14 Wasted Time
CF-127/A
900
LVL 1
geometry
15 LLPS
CF-202/A
800
LVL 1
binary searchbitmasksbrute force +3
16 Game Outcome
CF-157/A
800
LVL 2
brute force
17 Devu, the Singer and Churu, the Joker
CF-439/A
900
LVL 2
greedyimplementation
18 Drazil and Date
CF-515/A
1000
LVL 2
math
19 Palindromic Times
CF-108/A
1000
LVL 2
implementationstrings
20 Dima and Guards
CF-366/A
1100
LVL 2
implementation
21 Calculating Function
CF-486/A
800
LVL 2
implementationmath
22 Polo the Penguin and Segments
CF-289/A
1100
LVL 2
brute forceimplementation
23 Case of the Zeros and Ones
CF-556/A
900
LVL 2
greedy
24 A and B and Chess
CF-519/A
900
LVL 2
implementation
25 Buttons
CF-268/B
1000
LVL 2
implementationmath
26 Lucky Substring
CF-122/B
1000
LVL 2
brute forceimplementation
27 Vasya and Digital Root
CF-355/A
1100
LVL 2
constructive algorithmsimplementation
28 Sinking Ship
CF-63/A
900
LVL 2
implementationsortingsstrings
29 Valera and Antique Items
CF-441/A
1000
LVL 2
implementation
30 Cows and Poker Game
CF-284/B
1000
LVL 2
brute forceimplementation
31 Valera and Plates
CF-369/A
900
LVL 2
greedyimplementation
32 Little Frog
CF-53/C
1200
LVL 2
constructive algorithms
33 Lever
CF-376/A
900
LVL 2
implementationmath
34 Roadside Trees (Simplified Edition)
CF-265/B
1000
LVL 2
greedyimplementation
35 Table
CF-359/A
1000
LVL 2
constructive algorithmsgreedyimplementation
36 Ciel and Dancing
CF-322/A
1000
LVL 2
greedy
37 Valera and X
CF-404/A
1000
LVL 2
implementation
38 Game With Sticks
CF-451/A
900
LVL 2
implementation
39 Prison Transfer
CF-427/B
1100
LVL 2
data structuresimplementation
40 Inna and Choose Options
CF-400/A
1000
LVL 2
implementation
41 Squares
CF-263/B
900
LVL 2
greedyimplementationsortings
42 Postcards and photos
CF-137/A
900
LVL 2
implementation
43 Little Elephant and Magic Square
CF-259/B
1100
LVL 2
brute forceimplementation
44 Lucky Ticket
CF-146/A
800
LVL 2
implementation
45 Trace
CF-157/B
1000
LVL 2
geometrysortings
46 Sereja and Algorithm
CF-367/A
1500
LVL 3
data structuresimplementation
47 Tiling with Hexagons
CF-216/A
1200
LVL 3
implementationmath
48 Rook, Bishop and King
CF-370/A
1100
LVL 3
graphsmathshortest paths
49 Megacity
CF-424/B
1200
LVL 3
binary searchgreedyimplementation +1
50 Watchmen
CF-650/A
1400
LVL 3
data structuresgeometrymath
51 Dorm Water Supply
CF-107/A
1400
LVL 3
dfs and similargraphs
52 MUH and Sticks
CF-471/A
1100
LVL 3
implementation
53 Vitaliy and Pie
CF-525/A
1100
LVL 3
greedyhashingstrings
54 Maxim and Discounts
CF-261/A
1400
LVL 3
greedysortings
55 Eugeny and Play List
CF-302/B
1200
LVL 3
binary searchimplementationtwo pointers
56 Code Parsing
CF-255/B
1200
LVL 3
implementation
57 Unary
CF-133/B
1200
LVL 3
implementation
58 Alternative Thinking
CF-603/A
1600
LVL 3
dpgreedymath
59 Milking cows
CF-383/A
1600
LVL 3
data structuresgreedy
60 Little Elephant and Numbers
CF-221/B
1300
LVL 3
implementation
61 Canvas Frames
CF-127/B
1000
LVL 3
implementation
62 Binary Number
CF-92/B
1300
LVL 3
greedy
63 Domino Effect
CF-405/B
1100
LVL 3
64 Valuable Resources
CF-485/B
1300
LVL 3
brute forcegreedy
65 Bear and Elections
CF-574/A
1200
LVL 3
greedyimplementation
66 Art Union
CF-416/B
1300
LVL 3
brute forcedpimplementation
67 Digital Counter
CF-495/A
1100
LVL 3
implementation
68 Ohana Cleans Up
CF-554/B
1200
LVL 3
brute forcegreedystrings
69 Vasya and Football
CF-493/A
1300
LVL 3
implementation
70 Chat Online
CF-469/B
1300
LVL 3
implementation
71 Ksenia and Pan Scales
CF-382/A
1100
LVL 3
greedyimplementation
72 Bear and Poker
CF-573/A
1300
LVL 3
implementationmathnumber theory
73 Whose sentence is it?
CF-312/A
1100
LVL 3
implementationstrings
74 Vasya and Petya's Game
CF-576/A
1500
LVL 3
mathnumber theory
75 Good Number
CF-365/A
1100
LVL 3
implementation
76 Permutation
CF-359/B
1400
LVL 3
constructive algorithmsdpmath
77 Replacement
CF-135/A
1300
LVL 3
greedyimplementationsortings
78 Mashmokh and Numbers
CF-414/A
1500
LVL 3
constructive algorithmsnumber theory
79 Football Kit
CF-432/B
1200
LVL 3
brute forcegreedyimplementation
80 The Wall
CF-340/A
1200
LVL 3
math
81 Cifera
CF-114/A
1000
LVL 3
math
82 Polo the Penguin and Strings
CF-288/A
1300
LVL 3
greedy
83 Fox and Number Game
CF-389/A
1000
LVL 3
greedymath
84 A and B and Team Training
CF-519/C
1300
LVL 3
greedyimplementationmath +1
85 Drazil and Factorial
CF-515/C
1400
LVL 3
greedymathsortings
86 Sereja and Stairs
CF-381/B
1100
LVL 3
greedyimplementationsortings
87 Plant
CF-185/A
1300
LVL 3
math
88 A and B and Compilation Errors
CF-519/B
1100
LVL 3
data structuresimplementationsortings
89 Students and Shoelaces
CF-129/B
1200
LVL 3
brute forcedfs and similargraphs +1
90 The Child and Homework
CF-437/A
1300
LVL 3
implementation
91 Petya and Staircases
CF-362/B
1100
LVL 3
implementationsortings
92 Random Teams
CF-478/B
1300
LVL 3
combinatoricsconstructive algorithmsgreedy +1
93 Devu, the Dumb Guy
CF-439/B
1200
LVL 3
implementationsortings
94 Lucky Conversion
CF-145/A
1200
LVL 3
greedyimplementation
95 Misha and Changing Handles
CF-501/B
1100
LVL 3
data structuresdsustrings
96 Bear and Strings
CF-385/B
1200
LVL 3
brute forcegreedyimplementation +2
97 Anton and currency you all know
CF-508/B
1300
LVL 3
greedymathstrings
98 Strings of Power
CF-318/B
1300
LVL 3
implementationstringstwo pointers
99 Fedor and New Game
CF-467/B
1100
LVL 3
bitmasksbrute forceconstructive algorithms +1
100 Xor-tree
CF-429/A
1300
LVL 3
dfs and similartrees
101 Prizes, Prizes, more Prizes
CF-208/D
1200
LVL 3
implementation
102 Points and Segments (easy)
CF-430/A
1600
LVL 4
constructive algorithmssortings
103 24 Game
CF-468/A
1500
LVL 4
constructive algorithmsgreedymath
104 Eight Point Sets
CF-334/B
1400
LVL 4
sortings
105 Secret Combination
CF-496/B
1500
LVL 4
brute forceconstructive algorithmsimplementation
106 Tavas and Karafs
CF-535/C
1900
LVL 4
binary searchgreedymath
107 Burning Midnight Oil
CF-165/B
1500
LVL 4
binary searchimplementation
108 GCD Table
CF-582/A
1700
LVL 4
constructive algorithmsgreedynumber theory
109 Recycling Bottles
CF-671/A
1800
LVL 4
dpgeometrygreedy +1
110 Prime Swaps
CF-432/C
1800
LVL 4
greedysortings
111 Win or Freeze
CF-150/A
1400
LVL 4
gamesmathnumber theory
112 Pythagorean Triples
CF-707/C
1500
LVL 4
mathnumber theory
113 Inna and Huge Candy Matrix
CF-400/C
1500
LVL 4
implementationmath
114 ZgukistringZ
CF-551/B
1800
LVL 4
brute forceconstructive algorithmsimplementation +1
115 Vasily the Bear and Sequence
CF-336/C
1800
LVL 4
brute forcegreedyimplementation +1
116 Preparing Olympiad
CF-550/B
1400
LVL 4
bitmasksbrute force
117 The Two Routes
CF-601/A
1600
LVL 4
graphsshortest paths
118 Queue
CF-91/B
1500
LVL 4
binary searchdata structures
119 Tree Construction
CF-675/D
1800
LVL 4
data structurestrees
120 Cardiogram
CF-435/C
1600
LVL 4
implementation
121 Buns
CF-106/C
1700
LVL 4
dp
122 Guest From the Past
CF-625/A
1700
LVL 4
implementationmath
123 Page Numbers
CF-34/C
1300
LVL 4
expression parsingimplementationsortings +1
124 Road Map
CF-34/D
1600
LVL 4
dfs and similargraphs
125 Memory and De-Evolution
CF-712/C
1600
LVL 4
greedymath
126 Valera and Contest
CF-369/B
1400
LVL 4
constructive algorithmsimplementationmath
127 Chilly Willy
CF-248/B
1400
LVL 4
mathnumber theory
128 Watering Flowers
CF-617/C
1600
LVL 4
implementation
129 Hard problem
CF-706/C
1600
LVL 4
dpstrings
130 Perfect Pair
CF-317/A
1600
LVL 4
brute force
131 The Big Race
CF-592/C
1800
LVL 4
math
132 Nearest Fraction
CF-281/B
1700
LVL 4
brute forceimplementationtwo pointers
133 MUH and Important Things
CF-471/B
1300
LVL 4
implementationsortings
134 Heap Operations
CF-681/C
1600
LVL 4
constructive algorithmsdata structuresgreedy
135 Gerald's Hexagon
CF-559/A
1600
LVL 4
brute forcegeometrymath
136 Guess a number!
CF-416/A
1400
LVL 4
greedyimplementationtwo pointers
137 Coloring Trees
CF-711/C
1700
LVL 4
dp
138 More Cowbell
CF-604/B
1400
LVL 4
binary searchgreedy
139 Vasiliy's Multiset
CF-706/D
1800
LVL 4
binary searchbitmasksdata structures +1
140 The Child and Set
CF-437/B
1500
LVL 4
bitmasksgreedyimplementation +1
141 OR in Matrix
CF-486/B
1300
LVL 4
greedyhashingimplementation
142 Two Heaps
CF-353/B
1900
LVL 4
combinatoricsconstructive algorithmsgreedy +3
143 Pasha Maximizes
CF-435/B
1400
LVL 4
greedy
144 Balls and Boxes
CF-260/C
1700
LVL 4
constructive algorithmsgreedyimplementation
145 Dima and Text Messages
CF-358/B
1500
LVL 4
brute forcestrings
146 Terse princess
CF-148/C
1700
LVL 4
constructive algorithmsgreedy
147 Primes on Interval
CF-237/C
1600
LVL 4
binary searchnumber theorytwo pointers
148 Cows and Primitive Roots
CF-284/A
1400
LVL 4
implementationmathnumber theory
149 Anagram Search
CF-144/C
1500
LVL 4
implementationstrings
150 Photographer
CF-203/C
1400
LVL 4
greedysortings
151 Magic Box
CF-231/D
1600
LVL 4
brute forcegeometry
152 Bear and Three Musketeers
CF-574/B
1500
LVL 4
brute forcedfs and similargraphs +1
153 Gerald is into Art
CF-560/B
1200
LVL 4
constructive algorithmsimplementation
154 Alice and Bob
CF-346/A
1600
LVL 4
gamesmathnumber theory
155 Kefa and Company
CF-580/B
1500
LVL 4
binary searchsortingstwo pointers
156 Queue
CF-545/D
1300
LVL 4
greedyimplementationsortings
157 Magic Formulas
CF-424/C
1600
LVL 4
math
158 Beauty Pageant
CF-246/C
1600
LVL 4
brute forceconstructive algorithmsgreedy
159 Non-square Equation
CF-233/B
1400
LVL 4
binary searchbrute forcemath
160 Undoubtedly Lucky Numbers
CF-244/B
1600
LVL 4
bitmasksbrute forcedfs and similar
161 Cthulhu
CF-103/B
1500
LVL 4
dfs and similardsugraphs
162 Woodcutters
CF-545/C
1500
LVL 4
dpgreedy
163 Han Solo and Lazer Gun
CF-514/B
1400
LVL 4
brute forcedata structuresgeometry +2
164 Approximating a Constant Range
CF-602/B
1400
LVL 4
dpimplementationtwo pointers
165 MUH and House of Cards
CF-471/C
1700
LVL 4
binary searchbrute forcegreedy +1
166 Pasha and String
CF-525/B
1400
LVL 4
constructive algorithmsgreedymath +1
167 Kefa and Park
CF-580/C
1500
LVL 4
dfs and similargraphstrees
168 Find Pair
CF-160/C
1700
LVL 4
implementationmathsortings
169 Vasya and Wrestling
CF-493/B
1400
LVL 4
implementation
170 k-Multiple Free Set
CF-274/A
1500
LVL 4
binary searchgreedysortings
171 Dima and Sequence
CF-272/B
1400
LVL 4
implementationmath
172 Dreamoon and Sets
CF-476/D
1900
LVL 4
constructive algorithmsgreedymath
173 Pasha and Tea
CF-557/B
1500
LVL 4
constructive algorithmsimplementationmath +1
174 Soldier and Badges
CF-546/B
1200
LVL 4
brute forcegreedyimplementation +1
175 Ilya and Sticks
CF-525/C
1600
LVL 4
greedymathsortings
176 Bits
CF-484/A
1700
LVL 4
bitmasksconstructive algorithms
177 History
CF-137/C
1500
LVL 4
sortings
178 Division into Teams
CF-149/C
1500
LVL 4
greedymathsortings
179 Rational Resistance
CF-343/A
1600
LVL 4
mathnumber theory
180 Quiz
CF-337/C
1600
LVL 4
binary searchgreedymath +2
181 Guess Your Way Out!
CF-507/C
1700
LVL 4
implementationmathtrees
182 Amr and Pins
CF-507/B
1400
LVL 4
geometrymath
183 Dreamoon and Sums
CF-476/C
1600
LVL 4
math
184 DZY Loves Chemistry
CF-445/B
1400
LVL 4
dfs and similardsugreedy
185 Two Substrings
CF-550/A
1500
LVL 4
brute forcedpgreedy +2
186 Dima and Lisa
CF-584/D
1800
LVL 4
brute forcemathnumber theory
187 Soldier and Cards
CF-546/C
1400
LVL 4
brute forcedfs and similargames
188 Replacement
CF-570/C
1600
LVL 4
constructive algorithmsdata structuresimplementation
189 Alyona and Strings
CF-682/D
1900
LVL 5
dpstrings
190 Journey
CF-721/C
1800
LVL 5
dpgraphs
191 Money Transfers
CF-675/C
2100
LVL 5
constructive algorithmsdata structuresgreedy +1
192 Babaei and Birthday Cake
CF-629/D
2000
LVL 5
data structuresdp
193 Paths and Trees
CF-545/E
2000
LVL 5
graphsgreedyshortest paths
194 Vanya and Triangles
CF-552/D
1900
LVL 5
brute forcecombinatoricsdata structures +3
195 Candy Boxes
CF-488/B
1900
LVL 5
brute forceconstructive algorithmsmath
196 Cycle in Graph
CF-263/D
1800
LVL 5
dfs and similargraphs
197 Amr and Chemistry
CF-558/C
1900
LVL 5
brute forcegraphsgreedy +2
198 Arthur and Table
CF-557/C
1900
LVL 5
brute forcedata structuresdp +3
199 Kefa and Dishes
CF-580/D
1800
LVL 5
bitmasksdp
200 Modulo Sum
CF-577/B
1900
LVL 5
combinatoricsdata structuresdp +1
ANALYTICS

Quick Stats

NEWBIE
60
PROBLEMS
PUPIL
37
PROBLEMS
SPECIALIST
46
PROBLEMS
≥ EXPERT
57
PROBLEMS