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cf06140366
AdventOfCode-2018
/
day1_1.cr
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puts
File
.
read
(
"
day1
"
)
.
split
(
"
\n
"
)
.
select
{
|
it
|
!
it
.
empty?
}
.
map
(
&
.
to_i
)
.
sum
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