import sys
import iotbx.pdb
from cctbx import adptbx

def run(args):
  pdb_inp = iotbx.pdb.input(file_name = args[0])
  bs = pdb_inp.xray_structure_simple().extract_u_iso_or_u_equiv()*adptbx.u_as_b(1)
  print bs.min_max_mean().as_tuple()

if __name__ == '__main__':
  run(args=sys.argv[1:])