l = []
ans = 0
while 1:
s = input()
if s == '#':
break
if s == '0':
ans = 0
for k in l:
z = k.split()
mile = int(z[-2])
class_code = z[-1]
if class_code == 'F':
ans += mile * 2
elif class_code == 'B':
ans += mile + (mile + 1) // 2
elif 1 <= mile <= 500:
ans += 500
else:
ans += mile
print(ans)
l = []
continue
l.append(s)