a = []
ff = open('matrix.txt.', 'r')
for i in ff.readlines():
  tmp = i.split(',')
  for j in xrange(len(tmp)):
    tmp[j] = int(tmp[j])
  a.append(tmp)
ff.close()

path = [[a[0][0], [a[0][0]]]]
n = len(a)

for k in xrange(1, n):
  pathtmp = []
  tmp = [a[k][0] + path[0][0], path[0][1][:]]
  tmp[1].append(a[k][0])
  pathtmp.append(tmp)
  for i in xrange(1, k):
    if path[i - 1][0] < path[i][0]:
      flag = i - 1
    else:
      flag = i
    tmp = [path[flag][0] + a[k - i][i], path[flag][1][:]]
    tmp[1].append(a[k - i][i])
    pathtmp.append(tmp)
  tmp = [a[0][k] + path[k - 1][0], path[k - 1][1][:]]
  tmp[1].append(a[0][k])
  pathtmp.append(tmp)
  path = pathtmp

for k in xrange(n, 2 * n - 1):
  pathtmp = []
  for i in xrange(2 * n - 1 - k):
    if path[i][0] < path[i + 1][0]:
      flag = i
    else:
      flag = i + 1
    tmp = [path[flag][0] + a[n - 1 - i][k + i + 1 - n], path[flag][1][:]]
    tmp[1].append(a[n - 1 - i][k + i + 1 - n])
    pathtmp.append(tmp)
  path = pathtmp

print path