#include<bits/stdc++.h>
using namespace std;

int main(){
    long long a, b, c = 1, d = 1, ans;
    cin >> a >> b;
    while(a % 10 == 0 && a){
        a /= 10;
        c *= 10;
    }
    while(b % 10 == 0 && b){
        b /= 10;
        d *= 10;
    }
    if(max(abs(a), abs(b)) <= 9 && min(c, d) >= 100){
        cout << a * b * c * d / 10 << '\n';
        return 0;
    }
    ans = a * b * c * d;
    if(abs(ans) <= 99999999)cout << ans << '\n';
    else cout << 'E' << '\n';
}