#!/usr/bin/env python

import string
import sys
import Numeric

def eudist(g1,g2):
    """Find the euclidean distance between two vectors"""
    a = g1 - g2
    b = a * a
    c = Numeric.sum(b)
    d = Numeric.sqrt(c)
    return d

# Main

if len(sys.argv) != 2:
    sys.exit("Usage: " + sys.argv[0] + " exprfile")

exprfile = sys.argv[1]

f = open(exprfile, 'r')
lines = f.readlines()
f.close()

genelist = []
data = {}

for line in lines:
    line = string.strip(line)
    fields = string.split(line)
    label = fields[0]
    genelist.append(label)
    vals = []
    for strval in fields[1:]:
        vals.append(eval(strval))
    data[label] = Numeric.array(vals)


print len(genelist)
for g in genelist:
    print string.ljust(g, 9),
    for g2 in genelist:
        print eudist(data[g],data[g2]),
    print