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31afd41329
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advent-of-code
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2020
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ruby
/
day_01.rb
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n
=
3
x
=
ARGF
.
read
.
split
.
map
(
&
:to_i
)
.
combination
(
n
)
.
find
{
|
x
|
x
.
sum
==
2020
}
p
x
.
reduce
(
&
:*
)
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