题解 | #牛牛的快递#

a,b=input().split()
if float(a)<=1 and b=="y":
    print(25)
elif float(a)<=1 and b=="n":
    print(20)
elif float(a)>1 and float(a)%1==0 and b=="y":
    print(int(20+(float(a)-1)*1+5))
elif float(a)>1 and float(a)%1==0 and b=="n":
    print(int(20 + (float(a) - 1) * 1))
elif float(a)>1 and float(a)%1!=0 and b=="y":
    print(int(20+(float(a)//1 - 1+1)*1+5))
else:
    print(int(20+(float(a)//1 - 1+1)*1))