# 1212.py

print 2 and 3 and 8
# 8
print 2 and [] and 7
# []

#######################################

print 0 or '' or []
# []
print 0 or [] or 2 or 5
# 2

#######################################

print bool(2 and 3 and 8)
# True
print bool(2 and [] and 7)
# False

print bool(0 or '' or [])
# False
print bool(0 or [] or 2 or 5)
# True

#######################################
import math

# print math.log(0)
# Errore - il logaritmo di 0
# non e' definito.

print 1 or math.log(0)
# 1 - In questo caso il logaritmo
# non viene calcolato.

#######################################

print not []
# True

print not 5
# False