#define _USE_MATH_DEFINES
#include  <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include <stdlib.h>
#include<stdio.h>
#include <queue>
#include<map>
#include <fstream>
#include <sstream>
#include<set>
#include<stack>
#include<time.h>
#include <sys/types.h>
#include <tuple>
#include <numeric>
#include <iterator>

typedef long long int ll;
//#include<bits/stdc++.h>


using namespace std;

ll gcd(ll a, ll b) {
    if (a < b)swap(a, b);
    if (b == 0)return a;
    return gcd(b, a % b);
}
int lcm(int a, int b) {
    return a * b / gcd(a, b);
}

long long mod_exp(long long b, long long e, long long m) {
    if (e > 0 && b == 0) return 0;
    long long ans = 1;
    b %= m;

    while (e > 0) {
        if ((e & 1LL)) ans = (ans * b) % m;
        e = e >> 1LL;
        b = (b * b) % m;
    }

    return ans;
}


int main()
{

    int Q;
    Q = 1;
    //cin >> Q;



    while (Q--) {
        ll n;
        cin >> n;
        ll m;
        cin >> m;
        ll tt = 99999999;
        if (n % 10 || m % 10) {
            if (abs(n * m) <= abs(tt))cout << n * m;
            else cout << "E";
        }
        else {
            ll x = n, y = m;
            while (x % 10 == 0&&x)x /= 10;
            while (y % 10 == 0&&y)y /= 10;
            
            if (abs(x) < 10 && abs(y) < 10&&abs(n)>=100&&abs(m)>=100) cout << n * m / 10;
            else {
                if (abs(n * m) <= abs(tt))cout << n * m;
                else cout << "E";
            }
        }
        
    }
        return 0;
    }