import sys
def jisuanqi (a,b,c):
if b == '+':
return int(a) +int(c)
elif b == '-':
return int(a )-int (c)
elif b == '*':
return int (a) * int(c)
elif b == '/':
return int (a) / int(c)
print(jisuanqi(sys.argv[1],sys.argv[2],sys.argv[3]))
import sys
def jisuanqi (a,b,c):
if b == '+':
ret