import sys
line = (sys.stdin.readline().strip())
nums = line.split()
num1, num2 = nums[0], nums[1]
def product(bit: str, x: str):
ans = ''
c = 0
b = int(bit)
for i in range(len(x) - 1, -1, -1):
tmp = int(x[i]) * b + c
ans = str(tmp % 10) + ans
c = tmp // 10
if c:ans = str(c)+ans
return ans
def add(x: str, y: str):
if len(x) > len(y):x, y = y, x
i, j = len(x) - 1, len(y) - 1
c = 0
ans = ''
while i >= 0 and j >= 0:
tmp = int(x[i]) + int(y[j]) + c
ans = str(tmp % 10)+ans
c = tmp // 10
i, j = i - 1, j - 1
while j >= 0:
tmp = int(y[j]) + c
ans = str(tmp % 10)+ans
c = tmp // 10
j = j - 1
if c: ans = str(c)+ans
return ans
def solve(num1, num2):
# print(num1, num2)
if num1 == '0' or num2 == '0': return '0'
ans = '0'
i = 0
# print(len(num1))
for j in range(len(num2) - 1, -1, -1):
tmp = product(num2[j], num1)
tmp += '0' * i
# print(ans, tmp)
i += 1
ans = add(ans, tmp)
return ans
ans = solve(num1, num2)
print(ans)
