#include <iostream>
#include <cmath>
#include <set>

using lint = long long;

void solve() {
    std::set<lint> tens;

    {
        lint ten = 100;
        for (int i = 0; i < 10; ++i) {
            for (int d = -9; d <= 9; ++d) {
                tens.insert(ten * d);
            }
            ten *= 10;
        }
        tens.erase(0);
    }

    lint a, b;
    std::cin >> a >> b;

    if (tens.count(a) && tens.count(b)) {
        std::cout << a * b / 10 << std::endl;
        return;
    }

    auto ans = a * b;
    if (std::abs(ans) >= 100000000LL) {
        std::cout << "E";
    } else {
        std::cout << ans;
    }
    std::cout << std::endl;
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}