Codeforces #551 Div2 B - Serval and Toy Bricks

cf551-div2-b.rb

n, m, h = gets.chomp.split(" ").map(&:to_i)

front = gets.chomp.split(" ").map(&:to_i)
left = gets.chomp.split(" ").map(&:to_i)

top = []
n.times do
  top << gets.chomp.split(" ").map(&:to_i)
end

ret = Array.new(n){Array.new(m, -1)}

m.times do |i|
  n.times do |j|
    ret[j][i] = front[i]
  end
end

n.times do |j|
  m.times do |i|
    ret[j][i] = [ret[j][i], left[j]].min
  end
end

m.times do |i|
  n.times do |j|
    if top[j][i] == 0
      ret[j][i] = 0
    end
  end
end

ret.each{|line| puts line.join(" ")}