import math

from decimal import Decimal

a, b = list(map(str, input().split()))

a = Decimal(a)

b = Decimal(b)

ans = a*b

print((math.floor(ans)))
a, b = list(map(str, input().split()))

a = int(a)

b = int(b.replace(".", ""))

ans = a*b

if ans <= 99:

  print((0))

else:

  print((str(ans)[:-2]))
import math
from decimal import Decimal

a, b = list(map(str, input().split()))
a = Decimal(a)
b = Decimal(b)
ans = a * b
print((math.floor(ans)))

a, b = list(map(str, input().split()))
a = int(a)
b = int(b.replace(".", ""))
ans = a * b
if ans <= 99:
    print((0))
else:
    print((str(ans)[:-2]))

-import math -from decimal import Decimal - -a = Decimal(a) -b = Decimal(b) +a = int(a) +b = int(b.replace(".", "")) -print((math.floor(ans))) +if ans <= 99: +    print((0)) +else: +    print((str(ans)[:-2]))