SIANGLE by shinh

o = ''
while gets
t = $_.to_i
while t>0
v=gets.to_f
o << (v < 0 || v != (w = v.to_i) ? "Invalid input" : ((w-2)*180).to_s)
o << 10
t-=1
end
end
puts o

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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