import sys # sys.setrecursionlimit(200005) int1 = lambda x: int(x)-1 p2D = lambda x: print(*x, sep="\n") def II(): return int(sys.stdin.readline()) def LI(): return list(map(int, sys.stdin.readline().split())) def LI1(): return list(map(int1, sys.stdin.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def LLI1(rows_number): return [LI1() for _ in range(rows_number)] def SI(): return sys.stdin.readline().rstrip() # dij = [(0, 1), (-1, 0), (0, -1), (1, 0)] dij = [(0, 1), (1, 0), (0, -1), (-1, 0)] # dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)] inf = 1 << 63 # md = 998244353 md = 10**9+7 def yuki(a): cnt = 0 while a%10 == 0: a //= 10 cnt += 1 return cnt > 1 and abs(a) < 10 a, b = LI() if yuki(a) and yuki(b): ans = a*b//10 else: ans = a*b if abs(ans) > 99999999: ans = "E" print(ans)