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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 19: Interfaces
  5. Leaderboard

Day 19: Interfaces

Hacker
Rank
Score
AllisonP
01
flag of United States
30.00
omike1900
01
flag of China
30.00
kkutt
01
flag of Poland
30.00
kaiyuan
01
flag of United States
30.00
lukaszbednarz
01
flag of United Kingdom
30.00
luongthenhan
01
flag of France
30.00
sergio_fil
01
flag of Portugal
30.00
XiaoHan
01
flag of China
30.00
catmail91
01
flag of India
30.00
genesu
01
flag of United States
30.00
caffeineandbytes
01
flag of United States
30.00
sebBCW
01
flag of France
30.00
debasreedash
01
flag of United States
30.00
bazurbat
01
flag of Poland
30.00
RPichuebas
01
flag of Brazil
30.00
chel2310
01
flag of India
30.00
JoaoPPCastelo
01
flag of Portugal
30.00
adriantoman
01
flag of Australia
30.00
siddiquenu
01
flag of Pakistan
30.00
FengkieJ
01
flag of Indonesia
30.00
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