import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	A, B = getlist()
	if A == 0 or B == 0:
		print(0)
		return
	AA, BB = A, B
	n = 0
	m = 0
	while True:
		if A % 10 == 0:
			n += 1
			A = int(A // 10)
		else:
			break

	while True:
		if B % 10 == 0:
			m += 1
			B = int(B // 10)
		else:
			break

	if abs(A) < 10 and abs(B) < 10 and n >= 2 and m >= 2:

		ans = int(A * B * (10 ** ((n + m) - 1)))
		print(ans)
		return

	ans = AA * BB
	if abs(ans) < 10 ** 8:
		print(ans)
	else:
		print("E")






if __name__ == '__main__':
	main()