#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("Yes");}else{puts("No");}
#define MAX_N 200005

int main() {
    ll a, b;
    cin >> a >> b;

    ll ans;
    if(a == 0 || b == 0){
        cout << 0 << endl;
        return 0;
    }

    if(abs(a) < 100 || abs(b) < 100){
        ans = a * b;
        if(abs(ans) < 100000000){
            cout << ans << endl;
        }else{
            cout << 'E' << endl;
        }
        return 0;
    }

    ll c = abs(a);
    ll d = abs(b);

    while(c % 10 == 0)c /= 10;
    while(d % 10 == 0)d /= 10;

    if(c < 10 && d < 10){
        cout << a * b / 10 << endl;
        return 0;
    }

    ans = a * b;
    if(abs(ans) < 100000000){
        cout << ans << endl;
    }else{
        cout << 'E' << endl;
    }
    

    
    return 0;
}