#include "bits/stdc++.h"

#define REP(i, n, N) for(ll i=(n); i<(N); i++)
#define RREP(i, n, N) for(ll i=(N-1); i>=n; i--)
#define CK(n, a, b) ((a)<=(n)&&(n)<(b))
#define ALL(v) (v).begin(),(v).end()
#define MCP(a, b) memcpy(b,a,sizeof(b))
#define p(s) cout<<(s)<<endl
#define p2(a, b) cout<<(a)<<" "<<(b)<<endl
#define v2(T) vector<vector<T>>
typedef long long ll;
using namespace std;
const ll mod = 1e9 + 7;
const ll inf = 1e18;

ll A,B;

int main() {
    cin>>A>>B;
    string n=to_string(A);
    string m=to_string(B);
    ll n10=pow(10,n.size()-1-(A<0));
    ll m10=pow(10,m.size()-1-(B<0));
    if(A%n10==0 && B%m10==0){
        cout<<(A/n10)*(B/m10);
        REP(i,0,n.size()-1+m.size()-1-1){
            cout<<0;
        }
        cout<<endl;
    }else{
        if(CK(A*B,-99999999,100000000)){
            p(A*B);
        }else{
            p('E');
        }
    }

    return 0;
}