# 1302.py

def segno (x):
  if x>0: return 1
  elif x==0: return 0
  return -1

for x in (-2,0,3,4,-6): print segno(x),
print
# -1 0 1 1 -1

def stampanome (a):
  if a=='Marco': print 'Marco Rossi'
  elif a=='Giulia': print 'Giulia Verdi'
  elif a=='Teo': print 'Teo Bianchi'
  else: print 'Ignoto'

for x in ['Marco','Roberta','Teo','Giulia']: stampanome(x)
# Marco Rossi
# Ignoto
# Teo Bianchi
# Giulia Verdi