#!/usr/bin/env ruby

# read request-table.txt
re = /(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)/

hourly = Array.new(24){ Array.new(12) }
ARGF.each_line do |line|
  if re.match(line)
    for min in 0 .. 11
      hourly[$1.to_i][min] = Regexp.last_match(min + 2).to_i
    end
  end
end

means = Array.new(12)
for min in 0 .. 11
  mean = 0
  for hour in 0 .. 23
    mean += hourly[hour][min]
  end
  means[min] = Float(mean) / 24
end

cc_matrix = Array.new(12){ Array.new(12) }
for m0 in 0 .. 11
  for min in 0 .. 11
    cov = 0
    sum_dx2 = sum_dy2 = 0
    for hour in 0 .. 23
      x = hourly[hour][m0]
      y = hourly[hour][min]
      cov += (x - means[m0]) * (y - means[min])
      sum_dx2 += (x - means[m0])**2
      sum_dy2 += (y - means[min])**2
    end
    cc_matrix[m0][min] = Float(cov) / Math.sqrt(sum_dx2 * sum_dy2)
  end
end

for m0 in 0 .. 11
  for min in 0 .. 11
    printf "%.3f ", cc_matrix[m0][min]
  end
  print "\n"
end