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whatalnk/aising2019-a.rb

Created January 18, 2019 12:19
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aising2019 A
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aising2019-a.rb
# https://atcoder.jp/contests/aising2019/submissions/4036852
n = gets.chomp.to_i
h = gets.chomp.to_i
w = gets.chomp.to_i
puts (n + 1 - h) * (n + 1 - w)
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