ABC#16

A.rb

m, d = gets.chomp.split(" ").map(&:to_i)
if m % d == 0 then
  puts 'YES'
else
  puts 'NO'
end

B.rb

a, b, c = gets.chomp.split(" ").map(&:to_i)
res1 = a + b
res2 = a - b
if res1 == res2 then
  if res1 == c then
    puts '?'
  else
    puts '!'
  end
elsif res1 == c then
  puts '+'
elsif res2 == c then
  puts '-'
else
  puts '!'
end

C.rb

n, m = gets.chomp.split(" ").map(&:to_i)
friends = {}
(1..n).each do |k|
  friends[k] = []
end

while line = gets
  a, b = line.chomp.split(" ").map(&:to_i)
  friends[a] << b
  friends[b] << a
end


friends.each do |k, v|
  res = []
  v.each do |f|
    res << friends[f]
  end
  v << k
  puts (res.flatten.uniq - v).size
end