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Prepare
Tutorials
30 Days of Code
Day 19: Interfaces
Leaderboard
Day 19: Interfaces
Problem
Submissions
Leaderboard
Discussions
Editorial
Tutorial
Reveal solutions
Hacker
Rank
Country
Score
PING28
01
30.00
lsm0343
01
30.00
subhashni18792
01
30.00
sakash279
01
30.00
sunnysidesounds
01
30.00
JJJPPP
01
30.00
kcthanu
01
30.00
HariR
01
30.00
novak_gergely
01
30.00
sandrajohnson
01
30.00
acarmonaq
01
30.00
[deleted]
01
30.00
Dzionek95
01
30.00
aneeta34
01
30.00
priyam1527
01
30.00
tajgur
01
30.00
mohamedadly
01
30.00
shifaligarg
01
30.00
mullall
01
30.00
umeshsajjanar
01
30.00
1
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39
40
41
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8046
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