题解 | #牛牛的绩点#
牛牛的绩点
http://www.nowcoder.com/practice/de8bc3e736164786b07a4dd64ed172f7
dict1 = {'A':4.0,'B':3.0,'C':2.0,'D':1.0,'F':0}
sum = 0
score = 0
averge = 0
while True:
a = input()
if a=='False':
break
b = float(input())
score += b
sum += (dict1[a]*b)
averge = sum/score
print("%.2f"%averge)
sum = 0
score = 0
averge = 0
while True:
a = input()
if a=='False':
break
b = float(input())
score += b
sum += (dict1[a]*b)
averge = sum/score
print("%.2f"%averge)
