#include <bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<(b);++i)
#define erep(i,a,b) for(int i=a;i<=(int)(b);++i)
#define per(i,a,b) for(int i=(a);i>(b);--i)
#define eper(i,a,b) for(int i=(a);i>=b;--i)
#define pb push_back
#define mp make_pair
#define INF (1<<30)-1
#define MOD 1000000007
#define all(x) (x).begin(),(x).end()
#define vii vector<int>
#define vll vector<long long>
using namespace std;
typedef long long ll;
typedef pair<int,int> Pii;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
int dy[]={0, 0, 1, -1};
int dx[]={1, -1, 0, 0};
int gcd(int a,int b){return b?gcd(b,a%b):a;}
int lcm(int a,int b){return a/gcd(a, b)*b;}

ll a, b;  

bool check(ll x, ll y) {
    x = abs(x), y = abs(y);
    if ((x >= 100 && x % 10 == 0) && (y >= 100 && y % 10 == 0)) return true;
    return false;
}

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
    cin >> a >> b;
    string ans = to_string(a * b);
    if (check(a, b)) {
        ans.erase(ans.begin() + ans.size()-1);
    } else {
        if (to_string(abs(a * b)).size() > 8) {
            ans = "E";
        }
    }
    cout << ans << endl;
    return 0;
}