V, D = gets.split.map(&:to_i)

ans = Array.new(V) { Array.new(V, 0) }

if D <= 1
  V.times do |i|
    V.times do |j|
      ans[i][j] = 1
    end
  end
else
  V.times do |j|
    ans[0][j] = 1
    ans[j][0] = 1
  end
end

puts ans.map(&:join)