/* -*- coding: utf-8 -*-
 *
 * 722.cc: No.722 100×100=1000 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

typedef long long ll;

/* global variables */

/* subroutines */

/* main */

int main() {
  int a, b;
  scanf("%d%d", &a, &b);

  int n = 0, m = 0;
  while (a != 0 && a % 10 == 0) a /= 10, n++;
  while (b != 0 && b % 10 == 0) b /= 10, m++;

  if (a != 0 && a >= -9 && a <= 9 && n >= 2 &&
      b != 0 && b >= -9 && b <= 9 && m >= 2) {
    printf("%d", a * b);
    for (int k = n + m - 1; k > 0; k--) putchar('0');
    putchar('\n');
  }
  else {
    ll c = (ll)a * b;
    for (int k = n + m; k > 0; k--) c *= 10;
    if (c >= -99999999 && c <= 99999999) printf("%lld\n", c);
    else puts("E");
  }

  return 0;
}