#include <algorithm>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <map>
#include <memory>
#include <numeric>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <functional>

#define rep(i,a,b) for(int i=(a);i<(b);++i)
#define MOD 1000000007
#define int long long
using ll = long long;
using namespace std;
const int INF = 1LL << 50;
using P = pair<int, int>;

template <class T>
bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    else {
        return false;
    }
}
template <class T>
bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    else {
        return false;
    }
}
struct Setup {
    Setup() {
        cin.tie(0);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(20);
    }
} SETUP;

int calc(int x, int y) {
    return abs(x - y);
}

signed main() {
    int a, b; cin >> a >> b;
    int aa = abs(a), bb = abs(b);
    bool ok = true;
    aa %= 100;
    bb %= 100;
    if (aa >= 10 || bb >= 10) {
        ok = false;
    }

    if (ok) {
        int ans = a * b;
        ans /= 10;
        cout << ans << endl;
    }
    else {
        int ans = a*b;
        string s = to_string(ans);
        int len = s.size();
        if (s[0] == '-') len--;
        if (len > 8) {
            puts("E");
        }
        else {
            cout << s << endl;
        }
    }
}