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whatalnk/abc088-c.rb

Created February 19, 2018 01:40
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AtCoder ABC #088 C. Takahashi's Information
Raw
abc088-c.rb
c = []
csum0 = 0
3.times do
row = gets.chomp.split(" ").map(&:to_i)
csum0 += row.inject(:+)
c << row
end
csum1 = c[0][0] + c[1][1] + c[2][2]
csum2 = c[0][2] + c[1][1] + c[2][0]
if csum0 == csum1 * 3 && csum0 == csum2 * 3 then
puts "Yes"
else
puts "No"
end
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