35
Yoichi NAKAYAMA
Last seen 10 months ago
Member for 10 years, 3 months
Difficulty Normal
Initiation
First
Between Markers (simplified)
1
166
17
slice
Backward String
2
103
1
without *
Multiply (Intro)
2
56
5
double negation of slice
Acceptable Password I
2
31
5
No ascii_lowercase letters
All Upper I
27
12
1
int . max . str
Max Digit
140
5
1
First
Split Pairs
142
4
0
First
Replace First
159
4
0
First
Correct Sentence
216
4
0
min
Nearest Value
232
2
0
First
The Most Frequent
282
1
0
First
Number Length
286
2
0
First
Is Even
294
2
0
First
End Zeros
299
2
0
try int
Sum Numbers
333
2
0
First
Count Digits
388
1
0
Take the defference
Beginning Zeros
422
1
0
First
Remove All Before
459
1
0
First
Easy Unpack
728
0
0
First
First Word (simplified)
794
0
0
First
All the Same
1373
0
0
Home
groupby and pairwise
Changing direction
12
5
0
First
Split List
14
14
0
First
Duplicate Zeros
16
3
0
First
Missing Number
39
0
0
First
Date and Time Converter
41
8
0
First
Popular Words
56
7
1
First
Three Words
89
3
1
Second
Even the Last
91
28
3
First
Sort Array by Element Frequency
109
6
0
First
Days Between
163
0
0
First
Morse Decoder
178
3
0
First
Between Markers
264
3
0
First
Right to Left
315
0
0
First
Even the Last
373
0
0
First
Backward Each Word
507
0
0
First
First Word
649
1
0
First
Pawn Brotherhood
685
2
2
First
Sun Angle
781
0
0
First
Second Index
1077
0
0
First
Bigger Price
1197
0
0
First
Non-unique Elements
1966
0
0
Electronic Station
compare side length ratio
Similar Triangles
2
53
11
First
Remove Brackets
4
23
6
First
Acceptable Password VI
21
7
0
str.translate
Surjection Strings
37
7
1
sorted and set
Ascending List
73
5
0
First
Can You Pass?
78
0
0
First
Acceptable Password V
81
3
0
First
Sort by Extension
89
3
0
First
Verify Anagrams
91
13
0
First
Boolean Algebra
147
0
0
First
Acceptable Password IV
164
1
0
First
Words Order
194
1
0
First
Acceptable Password III
276
0
0
First
All Upper II
284
0
0
First
Digits Multiplication
316
0
0
First
Acceptable Password II
336
0
1
First
Find Sequence
352
0
0
First
Brackets
562
0
0
Scientific Expedition
title
Conversion into CamelCase
1
198
10
First
Time Converter (24h to 12h)
2
114
4
First
YAML. More Types
9
11
0
First
Sum by Type
11
12
4
First
Caps Lock
14
11
1
First
Call to Home
23
0
0
one-liner
Call to Home
26
0
0
max
Latest ISO datetime
31
0
1
First
Cipher Map
41
0
0
First
Convert and Aggregate
45
0
0
First
Letter Queue
52
0
0
First
YAML. Simple Dict
63
2
0
First
Remove Accents
70
2
0
First
Bird Language
108
0
0
First
Conversion into CamelCase
169
3
1
First
The Hidden Word
189
0
0
compare indices
Goes Right After
224
1
0
First
I Love Python!
235
0
0
First
Follow Instructions
237
1
0
First
Secret Message
267
0
0
First
Common Words
294
0
0
First
Absolute Sorting
297
0
1
First
Pangram
322
3
1
First
Conversion from CamelCase
326
0
0
Easily get description of functions
I Love Python!
361
0
0
First
Striped Words
371
0
0
First
Morse Clock
687
0
0
First
The Most Wanted Letter
962
0
0
O'Reilly
recursion
How Deep
1
74
5
First
Flatten a List (iterator version)
2
4
1
First
Time Converter (12h to 24h)
5
8
0
groupby
Compress List
7
17
2
First
Flatten a List (generator version)
9
2
0
First
Lightbulb End Watching
18
4
0
recursion
The Flat Dictionary
26
6
2
First
Cipher Crossword
30
0
0
divmod
Integer Palindrome
38
0
0
First
Multiple Lightbulbs
45
0
0
First
The Final Stone
46
0
0
count > len//2
Majority
47
7
0
Second
Xs and Os Referee
52
13
3
First
Sum of Digits
52
0
1
First
Reverse Every Ascending
78
2
1
First
Median of Three
98
2
0
walrus
Chunk
103
1
1
First
Lightbulb Start Watching
104
0
0
First
Flatten a List
120
0
0
First
Count Inversions
126
0
0
First
Lightbulb Intro
134
1
0
First
Determine the Order
145
0
0
0 or sorted
Sort Except Zero
158
2
1
slice
Replace Last
184
2
0
First
Frequency Sorting
231
0
0
First
Index Power
289
0
0
First
Median
308
6
1
First
Remove All After
311
0
0
First
Xs and Os Referee
695
0
0
First
Loading Cargo
1347
0
0
Incinerator
First
Multicolored Lamp
9
21
1
First
Friends
10
9
0
First
Microwave Ovens
18
4
1
First
Hacker Language
18
4
1
First
Army Units
20
4
1
First
Geometry Figures
23
3
0
First
Building Base
35
4
0
First
Capital City
35
2
1
First
Every Person is Unique
41
3
1
First
The Vampires
41
3
1
First
The Warriors
48
7
1
First
3 Chefs
56
2
0
First
Party Invitations
70
0
0
First
Voice TV Control
93
0
1
First
Dialogues
93
0
0
First
Text Editor
104
0
1
First
The Defenders
158
0
1
First
Army Battles
233
0
0
Mine
list comprehension
Matrix "Hatching"
15
0
1
Recursion
Domino Chain
19
2
0
First
Can Balance
22
5
1
First
Chess Knight
25
3
1
itertools
Long Pressed
25
0
0
First
Adjacent Letters
26
0
0
dict comprehension
Switch Keys to Values
26
0
0
re
Cut Sentence
32
6
1
First
Aggregate by Operation
33
0
0
1-path
Replace with Biggest
38
0
0
First
Currency Style
39
0
0
cmp_to_key
Bigger Together
44
1
0
No direction change with infinite repeating jar
Escape
56
0
0
First
Caesar Cipher (decryptor)
78
0
0
First
Determinant
124
0
0
First
Moore Neighbourhood
127
0
0
First
Achilles and the Tortoise
149
0
0
Functional
Fizz Buzz
174
0
0
First
The Greatest Common Divisor
190
0
0
First
Disposable Teleports
194
0
0
First
Binary Count
268
0
0
First
Fizz Buzz
376
0
0
First
Caesar Cipher (encryptor)
385
0
0
First
Best Stock
483
1
0
Second
Moore Neighbourhood
718
0
2
Ice Base
First
Long Repeat
1
116
11
split and slice
Find Quotes
2
74
2
Second
Largest Rectangle in a Histogram
3
6
0
First
Identify Block
10
5
0
First
Oil Pie
24
0
0
First
How to Find Friends
25
12
0
First
Is String a Number? (Part II)
28
0
3
First
Making Change
29
1
1
list comprehensions
Move Zeros
30
0
0
First
Is String a Number?
38
0
0
First
Correct Capital
43
0
0
First
Clock Angle
50
1
1
First
One Switch Strings
55
0
0
First
When "k" is Enough!
55
0
0
First
Reverse Roman Numerals
103
2
0
Second
Roman Numerals
159
12
2
First
Counting Tiles
179
0
1
First
Morse Encoder
211
0
0
First
The Most Numbers
279
0
0
Second
The Most Numbers
280
0
0
First
Largest Rectangle in a Histogram
298
0
0
First
Monkey Typing
333
0
0
First
Feed Pigeons
632
0
0
First
Roman Numerals
1203
0
0
Alice In Wonderland
First
Zigzag Array
7
10
1
First
YAML. List and Comments
11
0
0
First
When is Friday?
12
16
1
First
Digits Doublets
16
3
0
First
Flood Area
23
0
0
slice
Swap Nodes
28
7
0
First
The Shortest Knight's Path
39
0
1
First
IP Network: Route Summarization
43
0
0
First
Multiplication Table
91
1
0
First
Long Non Repeat
91
1
0
First
Middle Characters
98
1
1
First
The Fastest Horse
186
0
0
First
Transposed Matrix
714
0
0
GitHub
First
Create Intervals (generator version)
2
0
0
First
Create Intervals (iterator version)
4
0
0
First
Barcode Reader
7
0
0
First
Paper Dice
7
0
0
First
Merge Intervals (generator version)
8
0
0
reduce
Create Intervals
10
18
1
First
Merge Intervals (iterator version)
10
0
0
First
Broken Clock
11
0
0
First
Xs and Os Champion
12
0
0
issubset
Evenly Spaced Trees
22
3
1
First
Simplify Unix Path
23
1
0
set
Power Supply
28
2
0
First
Long Repeat Inside
31
3
1
First
Solution for Anything
39
5
0
reduce
Merge Intervals
42
2
0
First
The Highest Building
43
4
1
Recursion
The Cheapest Flight
46
1
0
First
Painting Wall
51
0
0
Keep the left hand on pits
Open Labyrinth
53
10
0
First
Expand Intervals
67
3
0
First
Cookies
124
0
0
First
Create Intervals
147
0
0
First
The Most Frequent Weekdays
171
0
0
First
The End of Other
202
0
0
Dropbox
First
Place Queens
1
6
0
First
Atbash Cipher
18
3
1
First
Worth of Words
26
7
0
First
On the same path
29
0
1
First
URL Normalization
32
0
0
pop
Common Tail
34
0
0
First
The Longest Palindromic
39
0
0
First
Friendly Number
45
0
0
First
Hubspot Amulet
49
0
0
First
Simple Hashlib
80
2
0
First
Humpty Dumpty Form
111
1
0
First
Three Points Circle
235
0
0
First
Numbers Factory
245
0
0
First
Speech Module
2702
0
0
PyCon TW
First
Building Visibility
8
5
0
Second
Golden Pyramid
8
3
1
First
Double Substring
21
6
0
First
Simple Areas
30
0
0
groupby
Sum Consecutives
46
2
1
First
Network Attack
51
2
0
First
Calculate Islands
56
2
0
First
Ryerson Letter Grade
62
0
0
Recursion
Robot Sort
74
0
0
First
Digit Stack
83
2
1
First
Golden Pyramid
83
0
0
Second
House Password
1108
1
4
First
House Password
3716
0
0
Storage
First
Exec Quine
3
12
1
set of frozenset
The Rows of Cakes
7
7
0
First
Earth Distances
11
3
1
First
List Beautify
11
0
0
First
English to Braille Translator
12
2
0
First
Square Spiral
19
2
1
First
Moria Doors
26
2
0
First
Playfair Cipher
50
0
0
First
Word Pattern
51
0
0
First
Group Equal consecutive
54
4
0
Generator
Saw the Stick
112
0
4
First
Restricted Prime
126
0
0
First
Weak Point
216
0
2
First
Skew-symmetric Matrix
326
0
0
HubSpot
First
Weekly Calendar
3
7
1
First
Next Birthday
4
7
1
division by subtruction
Univocalic davasaan
6
9
0
Divide maximum
Workout
7
1
1
sort pairs by score
Team Play
10
3
1
First
Repeating Decimals
15
0
0
First
Square Board
32
0
1
First
Auto Painting
62
0
0
First
Non Empty Lines
83
0
0
First
Number Base
204
0
0
First
The Hamming Distance
225
0
0
First
Restricted Sum
343
0
0
Blizzard
First
Stressful Subject
2
46
6
First
The First Working Day
5
11
0
First
Useless Flights
6
3
0
set
Rectangles Union
13
7
2
First
Spaceship Landing Strip
14
4
0
First
Permutation Index
29
1
0
First
Min and Max
40
1
0
First
Reversed Permutation Index
42
0
0
shift and count difference
String Conversion
139
0
1
First
Stair Steps
145
0
0
First
Unlucky Days
149
0
0
First
Weekend Counter
306
0
0
First
The Angles of a Triangle
321
0
0
First
Radiation Search
527
0
0
Rock
Third
Life Counter
3
2
0
List comprehension with walrus
Sort by Removing
3
0
0
slice and groupby
Home Coming
5
3
1
First
Count Comprehensions
6
1
0
Second
Life Counter
16
1
2
First
Berserk Rook
18
3
0
Recursion
Greedy Number
20
0
0
Second
CheckSum
25
3
1
First
Super Root
27
0
0
powerset from itertools recipes
Most Efficient Cutting
36
0
0
First
Life Counter
40
0
2
First
Parity Bit Generator
41
2
0
First
Web Log Sessions
51
0
0
First
Water Jars
59
0
0
First
CheckSum
62
0
0
Shelter
First
Completely Empty
2
33
1
First
ADFGVX Cipher
25
2
2
First
Halloween Monsters
28
1
1
First
AMSCO Cipher
29
0
0
First
Pattern Recognition
42
0
0
First
The Nearest Square Number
76
0
0
Second
The Nearest Square Number
77
0
0
First
Ghosts Age
163
0
0
set calculation
Seven Segment
224
0
0
Codeship
First
Texas Referee
2
13
0
First
Magic with 5 cards
13
0
0
make sequence first
Ugly Numbers
29
0
0
First
Pearls in the Box
89
0
0
Recursion with cache
Probably Dice
112
0
1
First
The Square Chest
314
0
0
Hermit
First
Keywords Finder
3
8
0
First
Excel Column Number
4
3
1
First
Count Consecutive Summers
5
13
0
First
Mono Captcha
5
5
1
First
Break Rings
10
16
2
Increment
Birthday Party
15
0
0
First
Backspace Apply
20
0
0
First
Network Loops
30
0
0
First
Unique Email Addresses
36
0
0
First
Stock Profit
39
0
0
First
Shorter Set
40
0
0
Fraction
Fractions Addition
55
0
0
First
The Good Radix
161
0
0
Watchtower
First
DNA Common Sequence
4
0
0
First
Broken Window
9
0
1
Generator
Funny Addition
17
7
1
First
Compare Functions
20
0
0
First
Bag of Santa Claus
26
0
0
First
Vigenere Cipher
28
1
0
First
Bacteria Colonies
29
0
0
First
Number Guess
63
0
0
First
Rotate Hole
115
1
0
First
Numbered Triangles
174
0
0
First
Funny Addition
408
0
0
Escher
First
The Stone Wall
27
5
0
First
Ground for the House
30
0
0
First
Compass, Map and Spyglass
40
4
1
First
The Ship Teams
177
1
0
Not On Map
First
Aggregate and Count
4
10
1
First
Most Wanted Letter
20
2
0
