menesiai

print "Iveskite metus: "
metai=gets.to_i
print "Iveskite menesi: "
menuo=gets.chomp


case menuo
when '1'
  puts "31d."
when '2'
  if(metai % 400 == 0 || (metai % 100 != 0 && metai % 4 == 0))
  puts "29d."
 else
  puts "28d."
  end
 when '3'
   puts "31d."
 when '4'
   puts "30d."
 when '5'
   puts "31d."
 when '6'
   puts "30d."
 when '7'
   puts "31d."
 when '8'
   puts "31d."
 when '9'
   puts "30d."
 when '10'
   puts "31d."
 when '11'
   puts "30d."
 when '12'
   puts "31d."
end