#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define int long long
using namespace std;
typedef pair<int, int> P;
const int INF = 1e15;

signed main(){
    int a, b;
    cin >> a >> b;
    string sa = to_string(abs(a));
    string sb = to_string(abs(b));
    bool f = true;
    rep(i, 1, sa.size()) if(sa[i] != '0') f = false;
    rep(i, 1, sb.size()) if(sb[i] != '0') f = false;
    if(f){
        if((a * b) % 10 == 0) cout << a * b / 10 << endl;
        else cout << a * b << endl;
    }else if(abs(a * b) >= 100000000) cout << "E" << endl;
    else cout << a * b << endl;
}