python版

a=input()
answer=a.split(" ")
a1=int(answer[0])
b1=answer[1]
price=0
if b1 == "y":
price+=5

if a1<=1000:
    price+=8
    print(price)
if a1>1000:
    price+=8
    a1-=1000
    price+=a1//500*4
    if a1 % 500 > 0:
        price+=4
        print(price)
    else:
        print(price)

if b1 == "n":
if a1<=1000:
price+=8
print(price)
if a1>1000:
price+=8
a1-=1000
price+=a1//500*4
if a1 % 500 > 0:
price+=4
print(price)
else:
print(price)