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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
cormerao
01
30.00
sayak1996
01
30.00
eric_lee0305
01
30.00
bryan_a_karlovi1
01
30.00
kaykaykut
01
30.00
river086
01
30.00
useless_dinosaur
01
30.00
Igor_Povzyk
01
30.00
rsloot
01
30.00
abcdjdj
01
30.00
coder121
01
30.00
chandrra
01
30.00
markghsu
01
30.00
milaan
01
30.00
terpfear
01
30.00
amiableapoorva
01
30.00
Sandeep_Sodhi
01
30.00
jlentin1
01
30.00
balamanoharb
01
30.00
JaviSal
01
30.00
1
...
120
121
122
...
7982
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