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  1. n = gets.to_i
  2. found = false
  3.  
  4. (10..99).each do |num|
  5.   tens = num / 10
  6.   ones = num % 10
  7.   if tens + ones == n
  8.     puts "#{num} = #{tens} + #{ones} = #{n}"
  9.     found = true
  10.   end
  11. end
  12.  
  13. puts "NO" unless found
  14.  
Success #stdin #stdout 0.01s 8072KB
comments (?)
stdin 
8
stdout 
17 = 1 + 7 = 8
26 = 2 + 6 = 8
35 = 3 + 5 = 8
44 = 4 + 4 = 8
53 = 5 + 3 = 8
62 = 6 + 2 = 8
71 = 7 + 1 = 8
80 = 8 + 0 = 8
https://ideone.com/Q8NDID
language:
Ruby (ruby 2.5.5)
created:
3 days ago
visibility:
public

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