#avgGrades
import re
import sys
args = sys.argv[1:]
line = ""
#sys.stdout.write(repr(sys.argv))
for x in args:
line = line + " " + x
if line == "":
sys.stdout.write("0.0")
else:
grades = re.findall("\\d+\.\\d+|\\d+", line)
if len(grades) <= 0:
sys.stdout.write("0.0")
else:
#sys.stdout.write("i'm here!")
average = 0.0
gradeTotal = 0.0
index = 0
totalWeight = 0.0
for grade in grades:
g = float(grade)
weight = 1.0
if index == len(grades)-1:
weight = 1.5
gradeTotal = gradeTotal + (g*weight)
totalWeight = totalWeight + weight
index = index + 1
average = gradeTotal / totalWeight
#print("Avg=",gradeTotal,"/",totalWeight)
#sys.stdout.write("i'm here! ")
sys.stdout.write(str(average))
